Lg multi v коды ошибок

Кондиционеры LG по праву занимают одни из лидирующих позиций во всем мире, предлагая своим покупателям передовые разработки в области технологий и изысканный дизайн. Компания производит множество моделей: от оконных кондиционеров до современных сплит систем. И, несмотря на то, что сплит системы LG являются одними из самых надежных на рынке, все-таки иногда возможны ситуации, когда кондиционер LG выходит из строя. В этом случае на дисплее кондиционера LG высвечиваются определенные коды ошибок. С их помощью можно понять, какая система кондиционера LG вышла из строя, и попытаться или устранить возникшую поломку самостоятельно, или, что правильнее, обратиться в сервисный центр LG.

Система кондиционирования воздуха в домах и квартирах уже давно стала привычным явлением. В летнюю жару приятно возвращаться домой, где благодаря сплит системе LG создана комфортная температура. Кондиционеры LG по праву занимают одни из лидирующих позиций во всем мире, предлагая своим покупателям передовые разработки в области технологий и изысканный дизайн. Компания производит множество моделей: от оконных кондиционеров до современных сплит систем. И, несмотря на то, что сплит системы LG являются одними из самых надежных на рынке, все-таки иногда возможны ситуации, когда кондиционер LG выходит из строя. В этом случае на дисплее кондиционера LG высвечиваются определенные коды ошибок. С их помощью можно понять, какая система кондиционера LG вышла из строя, и попытаться или устранить возникшую поломку самостоятельно, или, что правильнее, обратиться в сервисный центр LG.

Давайте рассмотрим коды ошибок кондиционеров LG:

  • Ошибка кондиционеров LG CH 01 означает, что во внутреннем датчике температуры воздуха произошло короткое замыкание или обрыв цепи.
  • Ошибка сплит системы LG CH 02 означает, что замкнуло датчик температуры испарителя или произошел обрыв в цепи.
  • Ошибка сплит системы LG CH 03 означает, что кондиционер и нагревает, и охлаждает воздух в помещении одновременно.
  • Ошибка сплит системы LG CH 04 показывает, что в температурном датчике конденсатора произошло короткое замыкание или обрыв цепи.
  • CH 05 ошибка показывает, что нарушено соединение между внутренним и внешним блоком кондиционера. 05 ошибка возникает из-за обрыва линии или отсутствия контакта.
  • Ошибка сплит системы LG CH 06 показывает, что превышен максимальный предел электропитания в цепи инверторного модуля.
  • Ошибка сплит системы LG CH 07 показывает, что превышен максимальный предел электропитания компрессора.
  • CH 08 ошибка показывает, что не вращается вентилятор внутреннего блока.
  • Ошибка сплит системы LG СН 09 означает, что не вращается вентилятор внешнего блока.
  • Ошибка сплит системы LG CH 10 кондиционера LG означает, что неисправен терморезистор контроля температуры корпуса компрессора сплит системы LG.

Все перечисленные коды ошибок LG кондиционера достаточно серьезны и за устранением причин возникших неполадок лучше обратиться к специалистам сервисного центра LG.

Если кода ошибки нет, а мигает один или все светодиодные индикаторы на панели советуем посмотреть в инструкции полную версию кодов ошибок кондиционера LG, чтобы уточнить причину.

Если на панели кондиционера мигает код Po, это означает, что система находится в энергосберегающем режиме, ошибки LG кондиционера в данном случае нет. Также об отсутствии ошибки LG кондиционера говорит тот факт, что на панели мигает код Lo, что означает, что система находится в режиме тестирования.

Варианты ошибок, которые отображаются на панели, различаются в зависимости от модели кондиционера, и все они требуют вашего пристального внимания и решения с привлечением профессионалов или своими силами. Так техника прослужит вам нет 1 год и не 5 лет, а гораздо дольше.

Дополнительный совет: регулярно мойте фильтры в кондиционерах. Во время работы кондиционер прогоняет через себя воздух, в котором содержится пыль, волосы или шерсть, если у вас есть домашний питомец. Все это оседает на фильтрах и внутренних частях прибора и кроме собственно загрязнения может послужить причиной прочих проблем:

  • Из-за пыли воздух в кондиционере хуже циркулирует, и тем самым помещение медленнее охлаждается.
  • Перегревается теплообменник, что может привести к быстрому износу компрессора.
  • В пыли могут появляться вирусы, споры плесени и грибков, пылевые клещи, что может стать причиной аллергии и других проблем со здоровьем.

Обычно помыть фильтр бывает достаточно просто. Например, в случае с моделью LG DualCool решетка фильтра располагается по всей верхней поверхности, ее легко снимать и вставлять на место. Если модель вашего кондиционера LG устроена иначе — обратитесь в фирменный сервис LG, чтобы фильтры прочистил квалифицированный сотрудник. Это в любом случае доставит меньше неудобств, некомфортная температура дома или риски для здоровья.

Источник
00 Text the 1, 2 or 3 digit fault code number only. I.e. If you see fault code CH07 on your indoor unit or R/Controller, only type 7 or 07 in your text message. 01 Indoor unit return air sensor fault. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor 1 Indoor unit return air sensor fault. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor 02 Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. 2 Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. 03 Remote controller comms error. Check wired correctly, if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group then reset power 3 Remote controller comms error. Check wired correctly, if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group then reset power 04 RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. 4 RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. 05 Comms Error, check your wiring, remove external pumps. Split/Multi — check volts from terminal N to 3 = 0 — 65 Vdc, Multi V — 4 Vdc terminals 3 and 4 5 Comms Error, check your wiring, remove external pumps. Split/Multi — check volts from terminal N to 3 = 0 — 65 Vdc, Multi V — 4 Vdc terminals 3 and 4 06 Indoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10C and 4 kOhm at 30C. if not replace sensor. Split = text 21 6 Indoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10C and 4 kOhm at 30C. if not replace sensor. Split = text 21 07 Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. 7 Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. 08 Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. 8 Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. 09 Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = Indoor unit EEPROM error — Replace the indoor unit PCB, and then make sure to do Auto addressing and input the address of central control. 9 Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = Indoor unit EEPROM error — Replace the indoor unit PCB, and then make sure to do Auto addressing and input the address of central control. 10 RAC Product: Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C, 168 kOhm at 30C. Multi Fdx & Multi V text 8 11 Multi V indoor unit not connected to an outdoor unit. Check comms wiring is correct, and check initialisation has been carried out correctly 12 RAC Product = EEPROM Sum Check Error, text 60 for help. 13 RAC Product = PSC (Reactor) Error, text 27 for help. 14 RAC Product = Compressor Phase Current Error 15 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 16 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 17 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 18 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 19 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 20 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 21 Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms, Check to earth 50 MOhm minimum, check run current 22 Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms . Check to earth 50 MOhm minimum, check run current 23 Inverter dc voltage low. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB 24 Splits and Multi Splits = High or low pressure trip. Low at 1 bar High at 35 bar check pressures. Multi V = High pressure trip. 25 Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK, check fuses, if fuses are OK replace outdoor main PCB 26 Inverter compressor seized. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and Inverter outputs 27 Inverter current irregularity. Check inverter PCB, check reactor connections and its resistance is less than 1 ohm. 28 Inverter dc voltage too high. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB 29 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 30 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 31 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 32 Inverter compressor discharge temperature too high. If over 105°C, check refrigerant charge 33 Excessive rise of standard compressor discharge temperature. If over 105°C check refrigerant charge 34 Excessive high pressure rise, over 35 bar at HP sensor. Check pressures, check coils, and filters are clean check for OFN in system pipework 35 Excessive low pressure drop under 1 Bar at LP sensor. Check pressures, and check service valves open 36 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 37 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 38 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 39 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 40 Inverter ac current abnormal. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and inverter outputs 41 Inverter compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. 42 Low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar 43 High pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2.5 Vdc = 37 bar 44 Outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C. If OK replace PCB, if not replace sensor 45 Outdoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 46 Outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 47 Compressor discharge sensor fault. Disconnect from PCB measure resistance. 237 kOhm at 20°C and 168 kOhm at 30°C. If OK replace PCB, if not replace sensor 48 Split/Multi Split = Outdoor unit discharge and air sensor both unplugged. Multi V = Outdoor unit coil sensor. Text 45 for diagnostics 49 Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK check fuses, if fuses OK, replace outdoor main PCB 50 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 51 Unit mismatch. Check model number of units do not exceed maximum. Multi V — also check Sub outdoor unit dipswitch settings 52 Communication error between inverter PCB and main outdoor unit PCB. Check wiring fuses and LEDs . If OK either inverter or main PCB defective 53 Comms error indoor to outdoor unit. Check your wiring . Split and Multi — check voltage from terminal N to 3 = 0 — 65 Vdc, Multi V — 4 Vdc terminals 3 and 4 54 Reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault 55 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 56 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 57 Comms error between outdoor main PCB and inverter PCB. Check wiring fuses and LEDs are lit. If OK either inverter or main PCB defective 58 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 59 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 60 Outdoor unit PCB EEPROM failure, try removing EEPROM and refitting if removable (possible contact fault), otherwise replace PCB if the EEPROM is non-removable. 61 Condenser coil over 65°C. Check coil and filters are clean and free from debris, and airflow is OK. Check system pressures for non-condesables 62 Inverter over 85°C. Check air flow across heat sink, check inverter tight to heatsink use thermal paste. Multi V — check inverter cooling fan 63 Multi F(DX) — «Cond. Pipe Sensor Temp. Low» (opposite to Error Code 61). Check Temperature/Resistance reading and replace sensor if found to be faulty. If sensor okay, check for cause of low temperature and rectify. 64 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message 65 Outdoor unit inverter fin temperature sensor fault. Disconnect from PCB measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C 67 Outdoor Fan Motor siezed, or rotation sensing circuit failure. Check motor for mechanical and/or electrical failure, if okay replace pcb. 100 Excessive discharge temperature rise 105°C Sub condenser 1 standard compressor. Check refrigerant 101 Excessive discharge temperature rise 105°C Sub condenser 1 standard compressor. Check refrigerant 102 Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant 103 Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant 104 Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units 105 Communication error between outdoor main PCB and fan PCB. Check plug connections and LEDs. If OK, replace either main or fan PCB 106 Outdoor unit fan motor high current. Check fans rotate freely, and are connected correctly 107 Outdoor unit low voltage to fan PCB. Check 300 Vdc supply, check fuses and plug connections. If OK, replace fan PCB 108 Communication error between outdoor main PCB, and fan PCB. Check plug connections and LEDs. If OK replace either main or fan PCB 109 Sub 1 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 110 Sub 1 reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault 111 Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units 113 Main outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 114 Main outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 115 Main outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 116 Sub 1 high pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2.5 Vdc = 37 bar 117 Sub 1 low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar 118 Sub 1 outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor 120 Sub 1 outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. if not replace sensor 121 Sub 1 compressor 1 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor 122 Sub 1 compressor 2 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor 123 Sub 1 outdoor unit coil sensor A fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 124 Sub 1 outdoor unit coil sensor B fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 125 Sub 1 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 126 Sub 1 outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 127 Sub 1 outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 128 Sub 2 high pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2.5 Vdc = 37 bar 129 Sub 2 low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar 130 Sub 2 outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor 132 Sub 2 outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C.if not replace sensor 133 Sub 2 compressor 1 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168kOhm at 30°C. if not replace sensor 134 Sub 2 compressor 2 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168kOhm at 30°C.if not replace sensor 135 Sub 2 outdoor unit coil sensor A fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 136 Sub 2 outdoor unit coil sensor B fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 137 Sub 2 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 138 Sub 2 outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 139 Sub 2 outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 140 Sub 2 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 141 Sub 2 reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault 142 Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units 143 Sub 1 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 144 Sub 1 excessive drop of low pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 145 Sub 2 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 146 Sub 2 excessive drop of low pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 147 Sub 1 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%).check fuses, if fuses OK replace outdoor main PCB 148 Sub 1 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB 149 Sub 2 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB 150 Sub 2 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB 151 Faulty 4 way valve. Check solenoid coil and output from PCB. If OK, mechanical failure. 152 Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant 153 Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant 154 Sub 3 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 155 Sub 3 reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault 156 Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units 157 Sub 3 high pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2.5 Vdc = 37 bar 158 Sub 3 low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar 159 Sub 3 outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor 161 Sub 3 outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. if not replace sensor 162 Sub 3 compressor 1 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor 163 Sub 3 compressor 2 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C.if not replace sensor 164 Sub 3 outdoor unit coil sensor A fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 165 Sub 3 outdoor unit coil sensor B fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor 166 Sub 3 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 167 Sub 3 outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 168 Sub 3 outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C 169 Sub 3 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 170 Sub 3 excessive drop of low pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris 171 Sub 3 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB 172 Sub 3 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB 173 Main outdoor unit standard compressor not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty 174 Sub 1 standard compressor 1 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty 175 Sub 1 standard compressor 2 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty 176 Sub 2 standard compressor 1 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty 177 Sub 2 standard compressor 2 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty 204 Comms Error between Outdoor Unit and HR Box No1. 1. Defective connection in HR unit power supply and transmission connection 2. Wrong setting of the HR unit Rotary switch and Dip switch 3. Defective HR unit PCB 208 Comms Error between Outdoor Unit and HR Box No2. 1. Defective connection in HR unit power supply and transmission connection 2. Wrong setting of the HR unit Rotary switch and Dip switch 3. Defective HR unit PCB 212 Comms Error between Outdoor Unit and HR Box No3. 1. Defective connection in HR unit power supply and transmission connection 2. Wrong setting of the HR unit Rotary switch and Dip switch 3. Defective HR unit PCB 240 Central controller wiring error. Check all comms wiring, including between controller and CNU, and IP addresses. If OK possible defective CNU 241 Central controller data sending error. Either defective CNU or Central controller initialisation failure 242 Central controller data receiving error. Either defective CNU or Central controller initialisation failure 243 Central controller. Comms cable too long or picking up external electrical noise. If OK, mismatching of controllers, or defective CNU 244 Central controller data receiving time out. Either defective CNU or Central controller initialisation failure 245 Central controller data sending time out. Either defective CNU or Central controller initialisation failure 246 Central controller data receiving time out. Either defective CNU or Central controller initialisation failure 250 Central controller data receiving error. Either comms cable picking up external electrical noise, or defective CNU 251 Central controller receiving no data. Either comms cable picking up external electrical noise, or defective CNU 252 Central controller incorrect address error. Check addresses match, if OK either comms cable picking up external electrical noise, or defective CNU 253 Central Controller Disconnection Error, No response from Air Conditioner. Check wiring, if OK either comms cable picking up external electrical noise, defective CNU, or Interface. C1 Indoor unit return air sensor fault, Open or Short. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor C2 Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. C4 RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. C5 Comms Error, check your wiring, remove external pumps. Split/Multi — check volts from terminal N to 3 = 0 — 65 Vdc, Multi V — 4 Vdc terminals 3 and 4 C6 Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms, Check to earth 50 MOhm minimum, check run current C7 Splits = Compressor Over Current (CT2), also see Code 06. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. C8 Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. C9 Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. CA Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C, 168 kOhm at 30C. CC RAC Product = EEPROM Sum Check Error, text 60 for help. Cd RAC Product = PSC (Reactor) Error, text 27 for help. CE RAC Product = Compressor Phase Current Error CH00 Text the 1, 2 or 3 digit fault code number only. I.e. If you see fault code CH07 on your indoor unit or R/Controller, only type 7 or 07 in your text message. CH01 Indoor unit return air sensor fault. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor CH02 Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. CH03 Remote controller comms error. Check wired correctly, if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group then reset power CH04 RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. CH05 Comms Error, check your wiring, remove external pumps. Split/Multi — check volts from terminal N to 3 = 0 — 65 Vdc, Multi V — 4 Vdc terminals 3 and 4 CH06 Indoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10C and 4 kOhm at 30C. if not replace sensor. Split = text 21 CH07 Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. CH08 Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. CH09 Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = indoor PCB failure. Replace PCB CH10 RAC Product: Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C, 168 kOhm at 30C. Multi Fdx & Multi V text 8 CH11 Multi V indoor unit not connected to an outdoor unit. Check comms wiring is correct, and check initialisation has been carried out correctly CH12 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH13 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH14 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH15 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH16 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH17 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH18 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH19 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH20 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH21 Inverter compressor run current high. Check compressor windings all equal 1 to 4 OhmsCheck to earth 50 MOhm minimum, check run current CH22 Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms . Check to earth 50 MOhm minimum, check run current CH23 Inverter dc voltage low. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB CH24 Splits and Multi Splits = High or low pressure trip. Low at 1 bar High at 35 bar check pressures. Multi V = High pressure trip. CH25 Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK, check fuses, if fuses are OK replace outdoor main PCB CH26 Inverter compressor seized. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and Inverter outputs CH27 Inverter current irregularity. Check inverter PCB and reactor CH28 Inverter dc voltage too high. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB CH29 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH30 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH31 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH32 Inverter compressor discharge temperature too high. If over 105°C, check refrigerant charge CH33 Excessive rise of standard compressor discharge temperature. If over 105°C check refrigerant charge CH34 Excessive high pressure rise, over 35 bar at HP sensor. Check pressures, check coils, and filters are clean check for OFN in system pipework CH35 Excessive low pressure drop under 1 Bar at LP sensor. Check pressures, and check service valves open CH36 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH37 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH38 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH39 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH40 Inverter ac current abnormal. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and inverter outputs CH41 Inverter compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20C and 168 kOhm at 30C. CH42 Low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar CH43 High pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2.5 Vdc = 37 bar CH44 Outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor CH45 Outdoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor CH46 Outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor CH47 Compressor discharge sensor fault. Disconnect from PCB measure resistance. 237 kOhm at 20°C and 168 kOhm at 30°C. If OK replace PCB, if not replace sensor CH48 Split/Multi Split = Outdoor unit discharge and air sensor both unplugged. Multi V = Outdoor unit coil sensor. Text 45 for diagnostics CH49 Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK check fuses, if fuses OK, replace outdoor main PCB CH50 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH51 Unit mismatch. Check model number of units do not exceed maximum. Multi V — also check Sub outdoor unit dipswitch settings CH52 Communication error between inverter PCB and main outdoor unit PCB. Check wiring fuses and LEDs . If OK either inverter or main PCB defective CH53 Comms error indoor to outdoor unit. Check your wiring . Split and Multi — check voltage from terminal N to 3 = 0 — 65 Vdc, Multi V — 4 Vdc terminals 3 and 4 CH54 Reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault CH55 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH56 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH57 Comms error between outdoor main PCB and inverter PCB. Check wiring fuses and LEDs are lit. If OK either inverter or main PCB defective CH58 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH59 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH60 Outdoor unit PCB EEPROM failure, try removing EEPROM and refitting if removable (possible contact fault), otherwise replace PCB if the EEPROM is non-removable. CH61 Condenser coil over 65°C. Check coil and filters are clean and free from debris, and airflow is OK. Check system pressures for non-condesables CH62 Inverter over 85°C. Check air flow across heat sink, check inverter tight to heatsink use thermal paste. Multi V — check inverter cooling fan CH63 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH64 no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message CH65 Outdoor unit inverter fin temperature sensor fault. Disconnect from PCB measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C CH67 Outdoor Fan Motor siezed, or rotation sensing circuit failure. Check motor for mechanical and electrical failure. CL CL = Child Lock. Press Timer & Min buttons simultaneously for 5 seconds to engage/disengage function. help Text the 1, 2 or 3 digit fault code number only. I.e. If you see fault code CH07 on your indoor unit or R/Controller, only type 7 or 07 in your text message. HL Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. Alternatively, Dry Contact Interface is in «OFF» condition. Check status and adjust as necessary. Po Po = Jet Cool Mode selected. To cancel press Jet Cool, Fan Speed or Set Temperature button.
Источник

LG is one of the leading multinational companies based in South Korea. What started as a small venture has now turned into a billion-dollar empire that focuses on a wide range of technology-based sectors. Offering customers all that they can need from air conditioning, TVs, washing machines, to state-of-the-art AI systems. Making sure you get a quality built and desirable appliance that enhances your everyday life.

LG VRF is said to be one of the most powerful and versatile air conditioners, offering you a cost-effective and easy-to-install a system that will help you eradicate all your issues. Offering both indoor and outdoor units, it can help you set up the right way. Their VRF system is designed to help you minimize efficiency losses while providing you sustainable energy benefits. Additionally, it aims to provide you with comfort, reliability, energy efficiency, and smart solutions for your space.

With such a huge system comes a chance of error in function. Fortunately, the system offers you with specific error codes you can use to regain effective working. Start by noting down the error code, and match it using the list below. Once you have the error code you can easily work your way to the fix. To help you out we have listed down some of the most common error codes for LG VRF.

Error Codes;

  • Indicate different types of unit failures, assist in self-diagnosis and to track the frequency of occurrence.
  • Error codes are shown on the LED of indoor units, wired remote controller, the outdoor unit control board, and on the main screen of the LG Monitoring View (LGMV) Diagnostic Software.
  • If two or more errors occur simultaneously, the lower error code number is displayed first.
  • After error is resolved, the error code does not display.

Error Display;

The first, second, and third number on the LED indicates error number; the fourth number on LED indicates outdoor unit number.

Examples: 211 = Error No. 21 on master unit, 213 = Error No. 21 on slave2 unit, Error No. 105 on master unit on compressor 1.

Error Code Nomenclature Definitions;

  • MICOM: Non-volatile memory chip where unit setup information is stored.
  • EPROM: Non-volatile memory chip where device identification, size, and factory defined default component operating parameters are stored.
Error Codes Description
01 Indoor unit return air or optional remote wall temperature sensor communications error
02 Indoor unit inlet pipe temperature sensor communication error
03 Communication error between zone controller and indoor unit
04 Condensate float switch error
05 Communication error between outdoor unit and indoor unit
06 Indoor unit outlet pipe temperature sensor error
07 Indoor units are not operating in the same mode
09 Indoor unit EPROM error
10 Indoor unit BLDC fan motor communications error
211 Master outdoor unit inverter compressor PCB error
212 Slave1 outdoor unit inverter compressor PCB error
213 Slave2 outdoor unit inverter compressor PCB error
221 Master outdoor unit inverter board input overcurrent (RMS) error
222 Slave1 outdoor unit inverter board input overcurrent (RMS) error
223 Slave2 outdoor unit inverter board input overcurrent (RMS) error
231 Low DC voltage sensed at the master outdoor unit inverter compressor DC link
232 Low voltage to the slave1 outdoor unit inverter compressor DC link
233 Low voltage to the slave2 outdoor unit inverter compressor DC link
241 Master outdoor unit high pressure switch error
242 Slave1 outdoor unit high pressure switch error
243 Slave2 outdoor unit high pressure switch error
251 Input voltage to the master outdoor unit is too high or too low
252 Input voltage to the slave1 outdoor unit is too high or too low
253 Input voltage to the slave2 outdoor unit is too high or too low
261 Master outdoor unit inverter compressor operation error
262 Slave1 outdoor unit inverter compressor operation error
263 Slave2 outdoor unit inverter compressor operation error
281 Master outdoor unit inverter DC link high voltage error
282 Slave1 outdoor unit inverter DC link high voltage error

LG Multi V Indoor Units Types Error Codes

Error Code: 283

Description: Slave2 outdoor unit inverter DC link high voltage error

Error Code: 291

Description: Master outdoor unit inverter compressor overcurrent error

Error Code: 292

Description: Slave1 outdoor unit inverter compressor overcurrent error

Error Code: 293

Description: Slave2 outdoor unit inverter compressor overcurrent error

Error Code: 321

Description: Excessive increase in master outdoor unit inverter com- pressor1 gas discharge temperature

Error Code: 322

Description: Excessive increase in slave1 outdoor unit inverter com- pressor1 gas discharge temperature

Error Code: 323

Description: Excessive increase in slave2 outdoor unit inverter com- pressor1 gas discharge temperature

Error Code: 331

Description: Excessive increase in master outdoor unit inverter com- pressor2 gas discharge temperature

Error Code: 332

Description: Excessive increase in slave1 outdoor unit inverter com- pressor2 gas discharge temperature

Error Code: 333

Description: Excessive increase in slave2 outdoor unit inverter com- pressor2 gas discharge temperature

Error Code: 341

Description: Master outdoor unit compressor high pressure safety tripped

Error Code: 342

Description: Slave1 outdoor unit compressor high pressure safety tripped

Error Code: 343

Description: Slave2 outdoor unit compressor high pressure safety tripped

Error Code: 351

Description: Master outdoor unit low side pressure transducer sens- es pressure below allowable limits

Error Code: 352

Description: Slave1 outdoor unit low side pressure transducer sens- es pressure below allowable limits

Error Code: 353

Description: Slave1 outdoor unit low side pressure transducer sens- es pressure below allowable limits

Error Code: 361

Description: Master outdoor unit fell below low condenser (compression) ratio limit

Error Code: 362

Description: Slave1 outdoor unit fell below low condenser (compression) ratio limit

Error Code: 363

Description: Slave2 outdoor unit fell below low condenser (com- pression) ratio limit

Error Code: 401

Description: Master outdoor unit inverter compressor current trans- ducer (CT) sensor error

Error Code: 402

Description: Slave1 outdoor unit inverter compressor current trans- ducer (CT) sensor error

Error Code: 403

Description: Slave2 outdoor unit inverter compressor current trans- ducer (CT) sensor error

Error Code: 411

Description: Master outdoor unit inverter compressor1 discharge pipe temperature sensor error

Error Code: 412

Description: Slave1 outdoor unit inverter compressor1 discharge pipe temperature sensor error

Error Code: 413

Description: Slave2 outdoor unit inverter compressor1 discharge pipe temperature sensor error.

Error Code: 421

Description: Master outdoor unit low pressure transducer error

Error Code: 422

Description: Slave1 outdoor unit low pressure transducer error

Error Code: 423

Description: Slave2 outdoor unit low pressure transducer error

Error Code: 431

Description: Master outdoor unit high pressure transducer error

Error Code: 432

Description: Slave1 outdoor unit high pressure transducer error

Error Code: 433

Description: Slave2 outdoor unit high pressure transducer error

Error Code: 441

Description: Master outdoor unit ambient temperature sensor error

Error Code: 442

Description: Slave1 outdoor unit ambient temperature sensor error

Error Code: 443

Description: Slave2 outdoor unit ambient temperature sensor error

Error Code: 451

Description: Master outdoor unit heat exchanger pipe temperature sensor (front side, TH_HEX2) error

Error Code: 452

Description: Slave1 outdoor unit heat exchanger pipe temperature sensor (front side, TH_HEX2) error

Error Code: 453

Description: Slave2 outdoor unit heat exchanger pipe temperature sensor (front side, TH_HEX2) error

Error Code: 461

Description: Master outdoor unit suction pipe temperature sensor error

Error Code: 462

Description: Slave1 outdoor unit suction pipe temperature sensor error

Error Code: 463

Description: Slave2 outdoor unit suction pipe temperature sensor error

Error Code: 471

Description: Master outdoor unit inverter compressor2 discharge temperature sensor error

Error Code: 472

Description: Slave1 outdoor unit inverter compressor2 discharge temperature sensor error

Error Code: 473

Description: Slave2 outdoor unit inverter compressor2 discharge temperature sensor error

Error Code: 491

Description: Master outdoor unit IPM temperature sensor error

Error Code: 492

Description: Slave1 outdoor unit IPM temperature sensor error

Error Code: 493

Description: Slave2 outdoor unit IPM temperature sensor error

LG Multi V Outdoor Units Types Error Codes

Error Code: 501

Description: Master outdoor unit three-phase power is not connected properly

Error Code: 502

Description: Slave1 outdoor unit three-phase power is not connected properly

Error Code: 503

Description: Slave2 outdoor unit three-phase power is not connected properly

Error Code: 511

Description: Combination ratio is out of range

Error Code: 512

Description: Total indoor unit capacity exceeds allowable heat recovery unit branch capacity

Error Code: 521

Description: Communication error between master outdoor unit inverter PCB and main PCB

Error Code: 522

Description: Communication error between slave1 outdoor unit inverter PCB and main PCB

Error Code: 523

Description: Communication error between slave2 outdoor unit inverter PCB and main PCB

Error Code: 531

Description: Communication error between outdoor unit main PCB and indoor unit(s) PCB

Error Code: 541

Description: Master outdoor unit power error

Error Code: 542

Description: Slave1 outdoor unit power error

Error Code: 543

Description: Slave2 outdoor unit power error

Error Code: 571

Description: Master outdoor unit main PCB and inverter PCB communication error

Error Code: 572

Description: Slave1 outdoor unit main PCB and inverter PCB communication error

Error Code: 573

Description: Slave2 outdoor unit main PCB and inverter PCB communication error

Error Code: 591

Description: Outdoor unit series installation error

Error Code: 601

Description: Master outdoor unit inverter PCB EPROM error

Error Code: 602

Description: Slave1 outdoor unit inverter PCB EPROM error

Error Code: 603

Description: Slave2 outdoor unit inverter PCB EPROM error

Error Code: 621

Description: High temperature at the master outdoor unit inverter heatsink

Error Code: 622

Description: High temperature at the slave1 outdoor unit inverter heatsink

Error Code: 623

Description: High temperature at the slave2 outdoor unit inverter heatsink

Error Code: 651

Description: Master outdoor unit inverter heatsink temperature sensor error

Error Code: 652

Description: Slave1 outdoor unit inverter heatsink temperature sensor error

Error Code: 653

Description: Slave2 outdoor unit inverter heatsink temperature sensor error

Error Code: 671

Description: Master outdoor unit fan has locked up

Error Code: 672

Description: Slave1 outdoor unit fan has locked up

Error Code: 673

Description: Slave2 outdoor unit fan has locked up

Error Code: 711

Description: Master outdoor unit converter CT sensor error

Error Code: 712

Description: Slave1 outdoor unit converter CT sensor error

Error Code: 713

Description: Slave2 outdoor unit converter CT sensor error

Error Code: 751

Description: Master outdoor unit fan CT sensor error

Error Code: 752

Description: Slave1 outdoor unit fan CT sensor error

Error Code: 753

Description: Slave2 outdoor unit fan CT sensor error

Error Code: 761

Description: Master outdoor unit fan DC link high voltage error

Error Code: 762

Description: Slave1 outdoor unit fan DC link high voltage error

Error Code: 763

Description: Slave2 outdoor unit fan DC link high voltage error

Error Code: 771

Description: Master outdoor unit fan overcurrent error

Error Code: 772

Description: Slave1 outdoor unit fan overcurrent error

Error Code: 773

Description: Slave2 outdoor unit fan overcurrent error

Error Code: 791

Description: Master outdoor unit fan operation failure error

Error Code: 792

Description: Slave1 outdoor unit fan operation failure error

Error Code: 793

Description: Slave2 outdoor unit fan operation failure error

Error Code: 861

Description: Master outdoor unit main PCB onboard EPROM error

Error Code: 862

Description: Slave1 outdoor unit main PCB onboard EPROM error

Error Code: 863

Description: Slave2 outdoor unit main PCB onboard EPROM error

Error Code: 871

Description: Master outdoor unit fan PCB EPROM error

Error Code: 872

Description: Slave1 outdoor unit fan PCB EPROM error

Error Code: 873

Description: Slave2 outdoor unit fan PCB EPROM error

Error Code: 1041

Description: Communication error between master outdoor unit and slave outdoor units

Error Code: 1042

Description: Communication error between slave1 outdoor unit and master and slave2 outdoor units

Error Code: 1043

Description: Communication error between slave2 outdoor unit and master and slave1 outdoor units

Error Code: 1051

Description: Master outdoor unit fan PCB to compressor PCB communication error

Error Code: 1052

Description: Slave1 outdoor unit fan PCB to compressor PCB communication error

Error Code: 1053

Description: Slave2 outdoor unit fan PCB to compressor PCB communication error

Error Code: 1061

Description: Master outdoor unit fan IPM error

Error Code: 1062

Description: Slave1 outdoor unit fan IPM error

Error Code: 1063

Description: Slave2 outdoor unit fan IPM error

LG VRF Error Codes

LG VRF Error Codes

Error Code: 1071

Description: Master outdoor unit fan DC link low voltage error

Error Code: 1072

Description: Slave1 outdoor unit fan DC link low voltage error

Error Code: 1073

Description: Slave2 outdoor unit fan DC link low voltage error

Error Code: 1131

Description: Master outdoor unit liquid pipe temperature sensor error

Error Code: 1132

Description: Slave1 outdoor unit liquid pipe temperature sensor error

Error Code: 1133

Description: Slave2 outdoor unit liquid pipe temperature sensor error

Error Code: 1141

Description: Master outdoor unit subcooling inlet temperature sensor error

Error Code: 1142

Description: Slave1 outdoor unit subcooling inlet temperature sensor error

Error Code: 1143

Description: Slave2 outdoor unit subcooling inlet temperature sensor error

Error Code: 1151

Description: Master outdoor unit subcooling outlet temperature sensor error

Error Code: 1152

Description: Slave1 outdoor unit subcooling outlet temperature sensor error

Error Code: 1153

Description: Slave2 outdoor unit subcooling outlet temperature sensor error

Error Code: 1161

Description: Master outdoor unit oil level sensor error

Error Code: 1162

Description: Slave1 outdoor unit oil level sensor error

Error Code: 1163

Description: Slave2 outdoor unit oil level sensor error

Error Code: 1451

Description: Communication error between master outdoor unit main board and external board

Error Code: 1452

Description: Communication error between slave1 outdoor unit main board and external board

Error Code: 1453

Description: Communication error between slave2 outdoor unit main board and external board

Error Code: 1511

Description: Master outdoor unit operation mode conversion error

Error Code: 1512

Description: Slave1 outdoor unit operation mode conversion error

Error Code: 1513

Description: Slave2 outdoor unit operation mode conversion error

Error Code: 1531

Description: Master outdoor unit upper heat exchanger temperature sensor error

Error Code: 1532

Description: Slave1 outdoor unit upper heat exchanger temperature sensor error

Error Code: 1533

Description: Slave2 outdoor unit upper heat exchanger temperature sensor error

Error Code: 1541

Description: Master outdoor unit lower heat exchanger temperature sensor error

Error Code: 1542

Description: Slave1 outdoor unit lower heat exchanger temperature sensor error

Error Code: 1543

Description: Slave2 outdoor unit lower heat exchanger tempera- ture sensor error

Error Code: 1821

Description: Communication error between master outdoor unit external board main and sub MICOMs

Error Code: 1822

Description: Communication error between slave1 outdoor unit external board main and sub MICOMs

Error Code: 1823

Description: Communication error between slave2 outdoor unit external board main and sub MICOMs

Error Code: 1931

Description: Excessive increase in master outdoor unit fan heatsink temperature

Error Code: 1932

Description: Excessive increase in slave1 outdoor unit fan heat- sink temperature

Error Code: 1933

Description: Excessive increase in slave2 outdoor unit fan heat- sink temperature

Error Code: 1941

Description: Master outdoor unit fan heatsink temperature sensor error

Error Code: 1942

Description: Slave1 outdoor unit fan heatsink temperature sensor error

Error Code: 1943

Description: Slave2 outdoor unit fan heatsink temperature sensor error

Error Code: 2001

Description: Valve addressing error

Error Code: 2011

Description: Heat recovery unit liquid sensor error.

Error Code: 2021

Description: Heat recovery unit subcooling pipe inlet sensor error

Error Code: 2031

Description: Heat recovery unit subcooling pipe outlet sensor error

Error Code: 2041

Description: Communication error between outdoor unit and heat recovery unit

Error Code: 2051

Description: Communication error between heat recovery unit and the 485 modem

Error Code: 2061

Description: Duplicate address error of the heat recovery unit

Error Code: 51

Description: Capacity of indoor units connected to the heat recovery unit exceeds allowable limits

Note: To use open line 485 communication (9,600 bps communication), you need to use a product that is compatible with all of the “Generation 4” versions of the indoor units, heat recovery units, outdoor units, and accessories.

Q&A

-Error Code: CH50

Description: Outdoor unit three-phase power is not connected properly.

Details: One or more of R(L1), S(L2), T(L3) input power line connections is / are missing for the outdoor unit.

Causes:
1. Input voltage is not correct R(L1), S(L2), T(L3).
2. Power line connections may not be correct.
3. Main PCB may be damaged.
4. Inverter PCB input current sensor error.

LG Multi V Service Manual PDF

LG Multi V 5 Service Manual – VRF (Variable Refrigerant Flow) Outdoor Units 6.0 to 42.0 Tons.pdf

LG Multi V 4 Service Manual – Heat Pump and Heat Recovery Variable Refrigerant Flow Outdoor Units 6.0 to 42.0 Tons.pdf

LG AC Error Codes and Troubleshooting

*PLEASE SEND ME ANY COMMENT, SUGGESTION OR CORRECTION YOU MAY HAVE.

Источник

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service

WARNING

troubleshooting of the Multi V product.

General Information

LG VRF system’s core logic uses error codes to indicate that an abnormal operation occurred. Error codes help guide a trained service tech-

nician to identify why and what caused the error to display, and help track the frequency of malfunction occurrences.

There are four (4) levels of error code responses; the system responds accordingly, depending on the severity of the malfunction assigned to

the malfunction. The level of responses range from «notify and keep operating» (Level 4), to «immediate system shutdown» (Level 1).

All error codes can be viewed at the outdoor unit seven segment display (SSD) and with LGMV software. If an error codes shows on one

(1) or more indoor unit zone controllers, it will display on LGMV, central controllers, BMS, or any other LG device connected to Comm bus —

Internet A/B. Indoor unit error code notifications will display differently based on location of the problem.

Level 4 Responses

Level 4 responses display the error code, but the system continues to operate (operate indefinitely). When the malfunction is fixed, the error

code remains until the master outdoor unit’s microprocessor is reset, and operation has resumed for 130 minutes without the malfunction

reoccurring.

Level 3 Responses

Level 3 responses display the error code on all zone controllers, central controllers, and on BMS systems. For Level 3 responses, the Multi V

system will shut down for three (3) minutes, and then the master microprocessor in the outdoor unit will automatically restart the system.

If the malfunction reoccurs up to a total of nine (9) times within one (1) hour, the system will display the error code, shut down, and restart

again each time. If the malfunction occurs a tenth (10th) time within the same one (1) hour, the system shuts down permanently, assigning

the error to a Level 1 response that requires a manual restart. The error code displays on the zone controllers and central controllers until the

malfunction is fixed.

Level 2 Responses

Level 2 responses are communications related errors only. Level 2 responses activate after ten (10) attempts to communicate have occurred.

After communications have been re-established, the error codes display for one (1) minute. If the communications are restored, then the

error code disappears. If the communication is lost within one (1) minute, the error code remains.

Error codes for Level 2 responses stop appearing on the zone and central controllers as soon as communications are restored, without the

need to reset power at the Master outdoor unit or to restart the entire system.

Multi V 5 error codes for Level 2 responses appear where the problem occurs, and time limits differ depending on type:

1. Communications lost between outdoor unit PCBs – no time delay.

2. Communications lost between the indoor unit and the outdoor unit for three (3) minutes.

3. Communications lost between the indoor unit and heat recovery unit for ten (10) seconds.

4. Communications lost between outdoor unit external PCBs for ten (10) seconds.

Level 1 Responses

Many Level 1 responses call for an immediate system shutdown, and, in almost all abnormal operational situations, occur after the algorithm

monitoring system verifies that the malfunction is real (to avoid nuisance alarms and false positives). Level 1 responses are displayed at

zone controllers, central controllers, BMS, LGMV, and the outdoor unit SSD. They cannot be cleared until the problem that caused it is fixed.

Before a Level 1 response is assigned, the Multi V algorithm initially assigns a Level 3 response to any system malfunction that is not

communications related. The system follows Level 3 protocol until the tenth (10th) time a malfunction occurs, at which time the system shuts

down, the malfunction changes from Level 3 to Level 1, and a manual restart is required. The entire Level 3 auto restart to Level 1 shut down

sequence will repeat until the malfunction is fixed.

For more information on Multi V Levels and error codes, see the troubleshooting pages in this section, and contact an LG trained technician.

Due to our policy of continuous product innovation, some specifications may change without notification.

©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. «LG» is a registered trademark of LG Corp.

ERROR CODE GENERAL

INFORMATION

125

Источник

Коды ошибок инверторных моделей сплит систем LG. Коды ошибок отдельных сплит-систем и мульти-систем LG с двумя или более внутренних блоками.

Код ошибки = 21

Содержание = IPM неисправностей lg (компрессор от перегрузки по току)

LED01G (красный) = 2 раза

LED02G (зеленый) = 1 раз

Случай- ошибка = компрессора неисправности, IPM неисправностей

Код ошибки = 22

Содержание КТ = 2 (макс. ток)

LED01G (красный) = 2 раза

LED02G (зеленый) = 2 раза

Случай ошибки LG, — Ток 14А

Код ошибки = 23

Содержание LG, — DC Ссылка Низкий Volt

LED01G (красный) = 2 раза

LED02G (зеленый) = 3 раза

Случай ошибки = Напряжение цепи постоянного тока является 140V

Код ошибки = 24

Содержание = LG, — Низкое / Высокое давление

Свето-диод красный — индикатор сплит-системы LG моргнул 2-а раза

Световой диод красный =4 раза

Неисправность, — Low / High Пресс коммутатор открытом цикле

Код ошибки = 25

Содержание LG, — AC Низкий / переменного тока, повышенное напряжение

Свето-диод красный — индикатор сплит-системы LG моргнул 2-а раза

Световой диод красный =5 раз

Неисправность, — Входное напряжение переменного тока -140В, 300В

Код ошибки = 26

Содержание = DC компрессор позиции

Свето-диод красный — индикатор сплит-системы LG моргнул 2-а раза

Световой диод красный =мигает 6-ть раз

Неполадка = Позиция обнаружения ошибок

Код ошибки = 27

Содержание = PSC Fault (реактор)

Свето-диод красный — индикатор сплит-системы LG моргнул 2-а раза

Световой диод красный =7 раз

Неисправность, — от перегрузки по току на «IGBT»

Код ошибки = 28

Содержание = DC Ссылка Высокая Вольт

Свето-диод красный — индикатор сплит-системы LG моргнул 2-а раза

Световой диод красный =8 раз

Неполадка = Напряжение цепи постоянного тока является 420V

Код ошибки = 32

Содержание = выпускной трубы Temp. Высокий (инв. Compressor)

Свето-диод красный — 3 раза

Световой диод красный = индикатор сплит-системы LG внтр. блока кондиционера моргнул 2-а раза

Неисправность, — Сброс датчика Высокая температура. (105oC)

Код ошибки = 33

Содержание = выпускной трубы Temp. Высокий (Cons. Compressor)

Свето-диод красный — 3 раза

Световой диод красный =3 раза

Неисправность, — Сброс датчика Высокая температура. (105oC)

Код ошибки = 40

Содержание = CT цепи

Свето-диод красный — 4 раза

LED02G (зеленый) =

Неисправность, — КТ Неисправность цепи Off

Код ошибки = 41

Содержание = D-Pipe датчика INV. Компрессор (Open / Short)

Свето-диод красный — 4 раза

Световой диод красный =1 раз

Неисправность, — Открыть / короткого замыкания

Код ошибки = 44

Содержание = датчик воздуха (открыть / Короткие

Свето-диод красный — 4 раза

Световой диод красный =4 раза

Неисправность, — Открыть / короткого замыкания

Код ошибки = 45

Содержание = дир. Труба Sensor (Open / Short)

Свето-диод красный — 4 раза

Световой диод красный =5 раз

Неисправность, — Открыть / короткого замыкания

Код ошибки = 46

Содержание = Всасывающая труба Sensor (Open / Short)

Свето-диод красный — 4 раза

Световой диод красный =мигает 6-ть раз

Неисправность, — Открыть / короткого замыкания

Код ошибки = 47

Содержание = D-Pipe Минусы Sensor. Компрессор (Open / Short)

Свето-диод красный — 4 раза

Световой диод красный =7 раз

Неисправность, — Открыть / короткого замыкания

Код ошибки = 48

Содержание = D-Pipe & датчик воздуха (открытый)

Свето-диод красный — 4 раза

Световой диод красный =8 раз

Неисправность, — Двойной датчик отключен. Разомкнуто соединение датчика температуры нагнетания комрессора и датчик темературы воздуха в Наружном блоке. Необходимо проверить датчики и их подключение, соединительные провода либо плату управления.

Код ошибки = 51

Содержание = За Емкость

Свето-диод красный — 5 раз

Световой диод красный =1 раз

Неисправность, — За Емкость Комбинация

Код ошибки = 53

Содержание = Ошибка связи (Крытый Открытый)

Свето-диод красный — 5 раз

Световой диод красный =3 раза

Неполадка = Плохо / Потеря связи

Код ошибки = 60

Содержание = EEPROM контрольной суммы

Свето-диод красный — мигает 6-ть раз

LED02G (зеленый) =

Неисправность, — Контрольная сумма Mis-Match

Код ошибки = 61

Содержание = дир. Труба датчика температуры

Свето-диод красный — мигает 6-ть раз

Световой диод красный =1 раз

Неполадка = Конд. Температура Высокий (65oC)

Код ошибки = 62

Содержание = радиатора датчик температуры

Свето-диод красный — мигает 6-ть раз

Световой диод красный = индикатор сплит-системы LG внтр. блока кондиционера моргнул 2-а раза

Неисправность, — радиатора Temp. Высокий (85oC)

Код ошибки = 65

Содержание = радиатора Sensor (Open / Short)

Свето-диод красный — мигает 6-ть раз

Световой диод красный =5 раз

Неисправность — Открыть / короткого замыкания

Неполадка = Напряжение цепи постоянного тока является 420V

LG CH-01 Неисправность одного из терморезисторов платы (разрыв или короткое замыкание) внутреннего комнатного, настенного блока сплит системы — контроля температуры поступающего воздуха и трубки газового контура кондиционера

LG CH-02 Неисправность одного из терморезисторов (разрыв или короткое замыкание) наружного блока: датчика температуры поступающего воздуха или температуры трубки газового контура

LG CH-03 Кондиционер работает одновременно и на обогрев и на охлаждение воздуха

LG CH-04 Включена система защиты компрессора от перегрузки

LG CH-05 Ошибка обмена данными между комнатным и наружным блоками сплит системы

LG CH-06 Ток потребления одного или нескольких исполнительных устройств наружного блока — реле, кратковременно был выше нормы

LG CH-07 Ток потребления всего наружного блока длительное время был выше нормы

LG CH-08 Неисправность двигателя вентилятора

LG CH-09 Неисправность 4 — ходового клапана

LG CH-10 Неисправен терморезистор контроля температуры корпуса компрессора сплит системы (обрыв или короткое замыкание)

Источник

Какая ошибка у вашего кондиционера?

Код ошибки: CH-01

Датчик температуры воздуха в помещении неисправен

Короткое замыкание в цепи датчика, обрыв цепи датчика. Попадание влаги в датчик, Неисправен контакт в разъеме, Вышла из строя плата управления

Код ошибки: CH-02

Датчик температуры хладагента, который находится при входе в теплообменник, неисправен

Короткое замыкание в цепи датчика, обрыв цепи датчика. Попадание влаги в датчик, Неисправен контакт в разъёме, Вышла из строя плата управления

Ремонт внешнего блока сплит-системы

Код ошибки: CH-03

Нет соединение с проводным пультом

Плохой контакт на плату управления в пульте управления, окисление контактов, перестал функционировать пульт управления, не работает плата управления ( то есть компоненты, отвечающие за соединение с пультом управления)

Проверьте провода пульта управления на наличие повреждений. — Проверьте состояние контактов в разъёме подключения соединительного провода на плате и на ПУ — Необходимо прозвонить соединительный провод — Убедиться что пульт управления исправен и работоспособен — Убедиться что плата управления цела.

Код ошибки: CH-04

Не работает дренажный насос

Дренажный шланг может быть забит, двигатель насоса неисправен, цепь поплавкового датчика разомкнута

Проверить двигатель дренажного насоса на исправность, оценить состояние дренажного шланга, проверить правильность установки дренажного насоса

Решение не помогло или нужно больше информации?
Проконсультируйтесь со специалистом или вызовите мастера!

Код ошибки: CH-05

В связи между внутренним и наружным блоком присутствует ошибка

Отсутствует питание на внутреннем или наружном блоке, ошибка подключения кабеля питания. Мотор вентилятора вышел из строя. Ошибка связи из-за внешних помех, если рядом пролегает электрический кабель.

Прежде всего проверить подключения кабеля, проверить наличие напряжения на плате управления блоков. Проверить исправность двигателя вентилятора.

Код ошибки: CH-06

Датчик, который расположен на выходе из теплообменника внутреннего блока, неисправен

Короткое замыкание в цепи датчика, обрыв цепи датчика. Попадание влаги в датчик, Неисправен контакт в разъёме, Вышла из строя плата управления

Код ошибки: CH-07

Ошибка EEPROM (ПЗУ)

Неисправен контакт ПЗУ на плате управления

Необходимо проверить контакт и правильность установки чипа ПЗУ

Код ошибки: CH-10

Неисправность БДПТ электродвигателя вентилятора внутреннего блока

Остановка вентилятора из-за внешнего воздействия — Плохой контакт в разъёме на плате управления — Неисправность двигателя — Плата неисправна

Устраните внешние воздействия — Проверьте контакт разъёма — Проверьте двигатель вентилятора — Проверьте плату управления

Код ошибки: CH-12

Датчик, который находится в центральной части теплообменника внутреннего блока, неисправен

Короткое замыкание в цепи датчика, обрыв цепи датчика. Попадание влаги в датчик, Неисправен контакт в разъёме, Вышла из строя плата управления

Обслуживание вентиляции

Код ошибки: СН21

Повышенный потребляемый ток компрессора с инверторным приводом

— Утечка хладагента — Компрессор заклинен — Плата инвертора неисправна

— Проверьте контур на возможность утечки хладагента — Проверить на неисправность силовые элементы платы управления компрессором — Проверить цепь электродвигателя компрессора на предмет обрывов и короткого замыкания

Обслуживание вентиляции

Код ошибки: СН22

Перегрузка. Повышенный потребляемый ток наружного блока

Загрязненный теплообменник наружного блока, низкая циркуляция охлаждающего воздуха в месте установки наружного блока (есть помехи для теплообмена, вентилятор загражден). Также причиной может являться низкое напряжение у источника питания

— Проверить напряжение источника питания — Проверить циркуляцию охлаждающего воздуха в месте, где установлен наружный блок (проверить, чтобы блоку ничего не мешало проводить теплообмен). — Прочистить фильтр внутреннего блока и теплообменник наружного блока

Обслуживание вентиляции

Код ошибки: СН23

Слишком низкое или высокое напряжение сети

Плата управления компрессором неисправна, низкое напряжение у источника питания, Плохо закреплен провод

Проверить качество подключения к источнику питания. Проверить подключения проводов реактора. Проверить датчик напряжение на исправность

Код ошибки: СН26

При запуске компрессора возникает неисправность

Компрессор вышел из строя, плата управления компрессором неисправна, На разъеме компрессора присутствует дефект провода

— Проверить провода компрессора на наличие дефектов — Проверить плату управления компрессора на работоспособность

Обслуживание вентиляции

Код ошибки: СН27

Перегрузка тока в цепи конвектора (преобразователя тока AC –DC)

— Работа кондиционера на перегрузках, недостаточная циркуляция воздуха в местах крепления внешнего блока кондиционера — Повреждение элементов выпрямителя PSC в плате управления — Неверные характеристики реактора

— Проверить циркуляцию воздуха в районе наружного блока — Проверить характеристики реактора

Код ошибки: СН32

Температура выше нормы нагнетания компрессора

-Датчик, который отвечает за измерение температуры нагнетания, неисправен — Утечка или недостаточное количество хладагента — Плохие контакты разъемов

-Проверить в местах крепления наружного блока хорошую циркуляцию воздуха — Поверить количество хладагента в системе, исключить утечку — Проверить датчик температуры нагнетания на исправность, проверить подключения разъемов к плате управления

Код ошибки: СН34

Высокое давление хладагента в системе

Циркуляция воздуха через теплообменник затруднена (фильтр внутреннего блока загрязнен, в случае работы в режиме охлаждения или обмерзший теплообменник наружного блока в случае работы в режиме обогрева) — Количество хладагента в системе меньше допустимой нормы — Проблемы с платой управления — Разъемы неисправны

Проверить в местах крепления наружного блока хорошую циркуляцию воздуха — Поверить количество хладагента в системе, исключить утечку — Проверить датчик температуры нагнетания на исправность — Проверить подключения разъемов к плату управления — Прочистить фильтры при условии их загрязнения

Код ошибки: CH35

Низкое давление хладагента в системе

— Циркуляция воздуха через теплообменник затруднена (фильтр внутреннего блока загрязнен, в случае работы в режиме охлаждения или обмерзший теплообменник наружного блока в случае работы в режиме обогрева) — Количество хладагента в системе меньше допустимой нормы — Проблемы с платой управления — Разъемы неисправны

— Проверить в местах крепления наружного блока хорошую циркуляцию воздуха — Поверить количество хладагента в системе, исключить утечку — Проверить датчик температуры нагнетания на исправность — Проверить подключения разъемов к плату управления — Прочистить фильтры при условии их загрязнения

Код ошибки: СН41

Датчик температуры нагнетания инверторного компрессора неисправен

— В цепи датчика случился обрыв или короткое замыкание — Отходит контакт в разъеме на блоке управления — Неисправность платы управления

— Проверить разъемы датчиков — Проверить сопротивление датчика: — СН41 — 200 кОм при 25°C (при отключенном датчике) — СН44 -10 кОм при 25°C (при отключенном от платы датчике) — СН45/48 — 5 кОм при 25°C (при отключенном от платы датчике) — СН46 — 5 кОм при 25°C (при отключенном от платы датчике)

Код ошибки: СН44

Неисправность датчика температуры уличного воздуха

— В цепи датчика случился обрыв или короткое замыкание — Отходит контакт в разъеме на блоке управления — Неисправность платы управления

— Проверить разъемы датчиков — Проверить сопротивление датчика: — СН41 — 200 кОм при 25°C (при отключенном датчике) — СН44 -10 кОм при 25°C (при отключенном от платы датчике) — СН45/48 — 5 кОм при 25°C (при отключенном от платы датчике) — СН46 — 5 кОм при 25°C (при отключенном от платы датчике)

Код ошибки: СН45/48

Неисправность или ошибка датчика температуры трубки теплообменника наружного блока кондиционера

— В цепи датчика случился обрыв или короткое замыкание — Отходит контакт в разъеме на блоке управления — Неисправность платы управления

— Проверить разъемы датчиков — Проверить сопротивление датчика: — СН41 — 200 кОм при 25°C (при отключенном датчике) — СН44 -10 кОм при 25°C (при отключенном от платы датчике) — СН45/48 — 5 кОм при 25°C (при отключенном от платы датчике) — СН46 — 5 кОм при 25°C (при отключенном от платы датчике)

Код ошибки: СН46

Ошибка датчика температуры на линии всасывания компрессора

— В цепи датчика случился обрыв или короткое замыкание — Отходит контакт в разъеме на блоке управления — Неисправность платы управления

— Проверить разъемы датчиков — Проверить сопротивление датчика: — СН41 — 200 кОм при 25°C (при отключенном датчике) — СН44 -10 кОм при 25°C (при отключенном от платы датчике) — СН45/48 — 5 кОм при 25°C (при отключенном от платы датчике) — СН46 — 5 кОм при 25°C (при отключенном от платы датчике)

Код ошибки: СН61

Температура конденсации превышает норму

Работа наружного блока в недостаточной циркуляции воздуха, что способствует перегрузкам. Теплообменник загрязнен. Неисправность датчика температуры конденсации

Проверить и обеспечить нормальную циркуляцию воздуха в местах крепления наружного блока кондиционера. Проверить не перезаправлена ли система фреоном. Проверить корректность установки термодатчика

Код ошибки: СН62

Перегрев радиатора силового транзистора на плате управления компрессором

— Вентилятор наружного блока кондиционера заклинил — Неправильное место установки наружного блока — Неисправность контура — Неисправность датчика температуры

— Проверьте состояние вентилятора наружного блока — Проверьте место установки наружного блока — Проверьте разъём соединения датчика — Проверьте контур датчика на плате управления компрессором

Код ошибки: СН67

Неисправность электродвигателя вентилятора наружного блока

— Вентилятор заклинил по механическим причинам — Электродвигатель вентилятора вышел из строя

— Проверить есть ли помеха работе вентилятора внешними предметами — Оценить работоспособность двигателя вентилятора — Проверьте плату управления (элементы контура управления вентилятором)

Код ошибки: СН72

Неисправность при переключении 4-х ходового клапана

— Разомкнут разъём подключения на плате — Привод 4-х ходового разомкнут, либо замкнут — Проблема платы управления

— Проверьте функциональность подключения на плате управления — Проверьте сопротивление катушки привода — Проверьте напряжение на плате управления

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LG Multi V5 Service Manual

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SERVICE MANUAL

Variable Refrigerant Flow Outdoor Units

6.0 to 42.0 Tons

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Summary of Contents for LG Multi V5

  • Page 1: Service Manual

    SERVICE MANUAL Variable Refrigerant Flow Outdoor Units 6.0 to 42.0 Tons…

  • Page 2
    4. For more technical materials such as submittals, catalogs, engineering, installation, best practices, and owner’s manuals, visit www.lghvac.com. For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.

  • Page 3: Table Of Contents

    Indoor Unit Addressing …………. 103-104 Pipe Detection Addressing …………105-110 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 4: Safety Precautions

    There is a risk of explosion, physical injury, or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 5
    There is risk of property damage. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 6
    Failure to carefully read and follow all instructions in this manual can result in equipment malfunction and property damage. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 7
    If the base collapses, the unit could fall and cause property damage or product failure. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 8: Nomenclature

    04 = Four Ports Series Number 2A = Series Number Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 9: Wiring Diagrams

    WIRING DIAGRAMS 208-230V Outdoor Units ARUM072BTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 10
    WIRING DIAGRAMS 208-230V Outdoor Units ARUM096BTE5 / ARUM121BTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 11
    WIRING DIAGRAMS 208-230V Outdoor Units ARUM144BTE5 / ARUM168BTE5 12/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 12
    208-230V Outdoor Units ARUM192BTE5 / ARUM216BTE5 / ARUM241BTE5 12/1 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 13
    WIRING DIAGRAMS 460V Outdoor Units ARUM072DTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 14
    WIRING DIAGRAMS 460V Outdoor Units ARUM096DTE5 / ARUM121DTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 15
    WIRING DIAGRAMS 460V Outdoor Units ARUM144DTE5 / ARUM168DTE5 12/1 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 16
    460V Outdoor Units ARUM192DTE5 / ARUM216DTE5 / ARUM241DTE5 12/1 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 17: Refrigerant Flow Diagrams

    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 18
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 19
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 20
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 21
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 22
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 23
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 24
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 25
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 26
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 27
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 28
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 29
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 30
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 31
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 32
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 33
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 34
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 35
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 36
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 37
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 38
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 39
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 40
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 41
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 42
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 43: Normal Operation/Compressor Control

    Inverter linear control as cooling and heating load increases Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 44: Basic Control

    Fan Motor Control Fan motor operates using Fuzzy logic. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 45: Special Control

    • Stop: Oil Return Operation will end if / when compressor protection control starts. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 46: Defrost Control / Partial Defrost Control

    3. Partial Defrost Control Operation will stop for the lower heat exchanger when the temperature rises above the set temperature. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 47
    (5) minutes (except for models with only one [1] compressor). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 48: Protection Control

    * Frequency Hold = Frequency (or RPM) is not increasing (can decrease). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 49
    29A or less 29A or less 29A or more 29A or more 41A or more 41A or more Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 50: Other Controls

    • If any errors are displayed, check corresponding wires / cables. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 51: Initial Setup

    Pre-Commissioning Device Configuration Worksheet. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 52
    Auto Addressing Procedure Ends. connected and have been successfully auto addressed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 53
    Figure 5: Quick Control Setting. DIP Switch DIP-SW01 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 54: Setting Optional Modes

    Fn14 oFF, oP1~oP3 except DOAS. Energy saving feature. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 55
    Level Change of Error Code CH200 SE14 on, oFF Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 56: Emergency Operation

    • During the emergency operation, cooling / heating capacity will be reduced. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 57
    Same as Normal Operation System error has occurred Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 58
    Is the refrigerant amount correct? Reverse switch, indoor units off. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 59
    • If outdoor unit switched to defrost mode while the auto refrigerant charge function was operating, restart auto refrigerant charge function only after defrost mode is finished. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 60
    • Press SW04C (X: Cancel) button, and turn No. 5 on the master outdoor unit PCB DIP switch bank SW01 to OFF after the function ends. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 61
    ITR has successfully completed. 8. If more than 30 minutes pass and “88” is still displayed, the ITR has failed. Contact your LG representative for technical assistance. 9. After a successful ITR, you can go to the LGMV Diagnostics tab, select Test Report, and save the .html data file. The report on the next page is a sample ITR report.
  • Page 62
    Setting Optional Modes Multi V ITR Result Report, Continued. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 63
    The results provided by running an Fd mode must not be con- sidered definitive proof that a system is properly operating. Fd code must not be left on without an LG trained service provider approving and guiding its use.
  • Page 64
    Heating Left Side (Off) Not Operating Fan Mode Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 65
    1,020 0.23 0.27 1,050 0.27 0.32 1,130 0.32 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 66
    *The system measures ambient temperature (minimum and maximum) in “Wait Time” to help determine when the system can start operating in Night Low Sound. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 67
    • A trained LG service provider must set this function during system installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 68
    Snow Removal Assist Mode and Rapid Defrost Mode Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 69
    434 / 2,990 (122.8) 334 / 2,304 (103.6) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 70
    (Default) Selected High Efficiency Function (Cooling Operation) Selected Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 71
    *op3 requires LG’s I / O Module (sold separately). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 72
    Smart Load Control can be used in almost every application except those where the outdoor unit is supporting a Dedicated Outdoor Air System (contact an LG representative for information). Smart Load Control will not have an impact on operation if the system is running in simultaneous cooling / heating (heat recovery systems only).
  • Page 73
    Outdoor Unit Assigned Reporting Duty Pd11 PDI Installed and Assigned Reporting Duty Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 74
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 75
    The Comfort Cooling Operation mode is set. No outdoor unit PCB reset or power cycle required. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 76
    • Maximum operation time of Pump Down is thirty (30) minutes (in case low pressure does not satisfy target levels immediately). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 77
    • Maximum operation time of Pump Out takes two (2) to five (5) minutes after the compressor starts. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 78
    5. Add refrigerant using the Refrigerant Auto Charge Function. Refrigerant Charging Valve Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 79
    For Heat Pump Systems, Not Used (Keep Closed) Vapor pipe Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 80
    • Heat Recovery Unit(s) Valves and EEVs are and / or compressor damage. Fully Open. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 81
    The Forced Oil Return function begins. PCB does not need reset. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 82
    Forced Defrost is Enabled. Oil Return Occurs Every Three (3) Hours Irrelevant of Need. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 83
    24,000 op26 Total Number of Indoor Units IDU2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 84
    Outdoor Unit Fan Speed Reduced by 100 RPM Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 85
    The Number of Partial Defrosts function begins. No outdoor unit PCB reset or power cycle required. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 86
    Use in applications where the LG-trained service technician wants to restart a system for diagnostic purposes, or to operate the system for an extended period with no power to one (1) or more indoor units. The system can operate safely without damage to the compressor if: •…
  • Page 87
    • Error will display continuously at the corresponding outdoor unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 88: Heat Recovery Units

    Liquid Bypass Valve Solenoid Assembly 1 Solenoid Assembly 2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 89: Dimensional Diagrams

    HEAT RECOVERY UNIT DIMENSIONAL DIAGRAMS PRHR022A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 90
    HEAT RECOVERY UNIT DIMENSIONAL DIAGRAMS PRHR032A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 91
    HEAT RECOVERY UNIT DIMENSIONAL DIAGRAMS PRHR042A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 92: Wiring Diagram

    HEAT RECOVERY UNIT WIRING DIAGRAM PRHR022A, 032A, 042A Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 93: Refrigerant Circuit Diagram

    D : Controls pressure between the high and low pressure vapor pipes during simultaneous operation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 94: Functions

    Heating Mode: Low Pressure Time = 0 Keep Close Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 95
    Temperature of Subcooler = T Subcooler Outlet – T Subcooler Inlet Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 96: Outdoor Unit Dip Switch Settings

    Master Outdoor Unit Slave1 Outdoor Unit Slave2 Outdoor Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 97: Heat Recovery Unit Settings

    3. Record the address assigned to each heat recovery unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 98: Due To Our Policy Of Continuous Product Innovation, Some Specifications May Change Without Notification

    6 7 8 two (2) are set to zone control. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 99
    • Any unused port must be sealed with a brazed copper cap, not with a plastic cap. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 100
    No. 3, 4 Valve 2 3 4 6 7 8 Control Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 101
    SW04M Increases the Valve Address by One (1) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 102
    Increases the Valve Address by One (1) SW05M Manual Addressing of Zoned Indoor Units Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 103: Indoor Unit Addressing

    12. Upon successful completion of the auto address procedure, record the system address assigned to each indoor unit by the auto address procedure. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 104
    7. Record the system address the outdoor unit assigned to each indoor unit by the auto address procedure. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 105: Pipe Detection Addressing

    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 106
    PCB. Auto pipe detection is incomplete. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 107
    PCB for five (5) minutes after the procedure has finished. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 108
    • Valves that do not have indoor units connected to them must be addressed with a number that has not been used. (Valves will not work if the address numbers are the same.) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 109
    • Valves that do not have connected indoor units must be addressed with a number that has not been used. (Valves will not work if the ad- dress numbers are the same.) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 110
    • If a central control is installed, it is impossible to set the master indoor unit in zoning. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 111: Test Run

    • Check / confirm that there are no error messages displayed on the indoor units, wired controllers, or the outdoor unit(s) SSD(s). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 112: Main Component Errors

    • If CH05/53/11 error occurs, check if auto-addressing is complete and the communication cables are properly installed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 113: Pcb Settings

    Switch Settings” page in the “PCB Settings” section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 114: Checking The Compressor

    0V (if digital tester is unavailable). Check coil and insulation resistors. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 115
    • If problems continue to occur even after following the procedures above, then both boards are defective. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 116: Checking The Electronic Expansion Valves

    • If liquid refrigerant is present in EEV, noise will be lower. Full open Open 1950 pulses Pulse Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 117
    • During assembly, or when the coil is removed, take care not to bend the casing pipe. Casing Casing Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 118
    IV EEV (red-white, red-orange, brown-yellow, brown-blue). Replace EEV. EEV is normal. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 119
    Red (+) and Black (-) are the multi-tester terminals. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 120
    W Terminal : Black (-) 0.2 ~ 0.6 V Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 121: Checking The Fan Ipm

    V Terminal : Black (-) W Terminal : Black (-) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 122: Checking The Outdoor Fan

    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 123: Checking The Valves

    5. Changes of solenoid valve operation can be verified by measuring bypass outlet piping temperature, detecting refrigerant sound, etc. [DC 500V]). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 124: Temperature Sensors

    Table 67: Temperature Sensor Resistance Values. Temperature Sensor Resistance Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 125: Error Codes

    All error codes can be viewed at the outdoor unit seven segment display (SSD) and with LGMV software. If an error codes shows on one (1) or more indoor unit zone controllers, it will display on LGMV, central controllers, BMS, or any other LG device connected to Comm bus — Internet A/B.

  • Page 126
    • Indoor unit EEPROM data is not available. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 127
    PCB for issues. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 128
    3 Slave2 outdoor unit inverter compressor overcurrent error. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 129
    • Defective outdoor unit PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 130
    • If the total connected indoor unit nominal capacity exceeds 192 Mbh for a single heat recovery unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 131
    3 Slave2 outdoor unit fan CT sensor error. nected or shorted. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 132
    • Damaged electrical condenser component (serving capacitor) on inverter driver board. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 133
    1 5 1 3 Slave2 outdoor unit difference between high and low pressure is too low. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 134
    Troubleshooting section to compare with actual system sensor error. temperature. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 135: Error Code Tables

    2 4 2 Network error of central controller. outdoor unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 136
    Measure the resistance of outlet pipe temperature sensor. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 137
    Checking communication cable connection Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 138
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 139
    Maximum 1/50~1/100 inches 11-13/16 inches Maximum 27-1/2 inches Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 140
    Outdoor Unit PCB Communication Error Between Indoor Unit and Outdoor Unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 141
    Replace the indoor unit PCB, perform the Auto Addressing procedure, and input the central control address. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 142
    Check the fan motor connection to the PCB only when power is OFF. Electrical shock can cause physical injury or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 143
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 144
    Recheck power and installation. page later in this section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 145
    — CH21 Comp.1 Comp.2 Comp.1 Comp.2 Comp.1 Comp.2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 146
    Check assembly. correct? Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 147
    Compressor wiring connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 148
    Check Bridge Diode P-R,S,T / N-R,S,T 0.38V ~ 0.7V Non-normal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 149
    Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 150
    Replace Inverter PCB assembly. display an error? Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 151
    PCB assembly correct? Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 152
    — CH26 Comp.1 Comp.2 Comp.1 Comp.2 Comp.1 Comp.2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 153
    Recheck power and installation. later in this section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 154
    Compressor wiring connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 155
    Fix if errors are found. Replace strainer, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 156
    PCB, and indoor / outdoor unit installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 157
    / outdoor unit installation. the outlet, not at the inlet. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 158
    (especially if reverse connection at Y-branch. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 159
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 160
    Check the resistance of the Inverter compressor discharge temperature sensor. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 161
    High pressure sensor. Low pressure sensor. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 162
    Slave 1 12: 542 sensor error. Slave 2 13: 543 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 163
    T S R T S R Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 164
    * Check communication cables between outdoor units in the following order: PCB connections terminal block communication cables. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 165
    7. Outdoor unit and heat recovery unit PCB is defective. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 166
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 167
    Inverter Drive circuit Diode 0.38V ~ 0.7V Non-normal (Check diode) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 168
    PCB. Check communication cable and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 169
    Error No. 05. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 170
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 171
    Actual component appearance depends on model and system type. Correct Inverter EEPROM installation direction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 172
    Heat Sink” page later in this section. Check Inverter PCB Connection Installation Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 173
    See also Error Code No. 113, Outdoor Unit Liquid Pipe (Condenser) Temperature Sensor Error. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 174
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 175
    Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 176
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 177
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 178
    Is the fan PCB assembly correct? found. Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 179
    Actual component appearance depends on model and system type. Check connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 180
    Both the socket opening and the EEPROM opening must be in the same direction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 181
    Both the socket opening and the EEPROM opening must be in the same direction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 182
    A with B.) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 183
    IC07C GND (pin 5) IC07C Vcc (pin 8) Not Normal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 184
    A 10 pin harness for connecting Main PCB with External PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 185
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 186
    Inverter Drive circuit Diode 0.38V ~ 0.7V Non-normal (Check diode) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 187
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 188
    Inverter Drive circuit Diode 0.38V ~ 0.7V Non-normal (Check diode) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 189
    DC voltage connected. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 190
    See also Error Code No. 65: Outdoor Unit Liquid Pipe (Condenser) Temperature Sensor Error. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 191
    If the signal between the main PCB and the external PCB is normal, the communication LED on the external PCB blinks. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 192
    *Excessive refrigerant leak: Both the piping inlet and outlet temperatures are <50°F when the indoor unit is off (EEV 40 pulses). Also, a loud refrigerant flow noise was heard. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 193
    Replace 4 way valve. the hot gas valve. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 194
    (output should be 230 V AC). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 195
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 196
    Press the reset button. Replay on-boarding. Replace outdoor unit external PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 197
    (inlet or outlet water) is <0°C (32°F), and mid-temperature seconds. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 198
    Check fan connection installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 199
    • Sensor resistance value will vary with the temperature. See below for the resistance values according to temperature (±5% tolerance). • • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 200
    6. When Steps 1 through 4 (or Steps 1 through 5 if the heat recovery unit PCB needs to be replaced) are completed successfully, perform the auto addressing and piping detection procedures. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 201
    5. If an indoor unit has not been connected to the first port (No. 1 Valve) of the heat recovery unit, set the heat recovery unit piping manually. Outdoor Unit Functions section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 202
    • • C = Heat Recovery Unit • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 203
    1. If Error No. 59 is displayed on the heat recovery unit, and Error No. 204 is displayed on the outdoor unit, these indicate that the outdoor unit software has NOT been upgraded to support heat recovery unit 3A models. Contact your LG representative for information.
  • Page 204
    4. If the red LED on the 485 modem still flashes even after it is replaced, replace the heat recovery unit PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 205
    485 Modem on 2A Series Heat Recovery Units Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 206
    PCB Communication Error Between Indoor Unit and Outdoor Unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 207
    Error Between Indoor Unit and Outdoor Unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 208
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 209: Replacing The Inverter Pcb Heat Sink

    4. Reinstall the inverter PCB by reattaching its screws with a JIS screwdriver. Tighten the screws, but do not overtighten. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 210: Checking Input Voltage In Case Of Power On

    Input Voltage (3-Phase /3-Wire 460V±15% 460V) Terminal Terminal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 211
    Use caution when measuring the voltage; GND is separated. There is risk of electric shock, and physical injury or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 212: Checking Converter Dc Link Voltage In Case Of Compressor Operating

    DC Link Voltage 3-Phase / 3-Wire / 460V 650V±20% Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 213
    Abnormal Main (DC-Comm.) GND3 (pin2) 5V (pin1) 4.5V~5.5V Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 214: Checking Inverter Pcb In Case Of Power Off

    Diode (9EA) 0.38 ~ 0.7 V Not normal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 215: Power System Wiring Diagram

    12V, 5V, GND2 12V, 5V, GND3 Comm. Module Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 216: Pcb Locations

    Main PCB External PCB Noise Filter Inverter PCB Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 217: Parts

    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 218
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. CN32_HUMID_BK CN31_SNOW_WH Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 219
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 220
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 221
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 222
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 223
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 224
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 225
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 226
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 227
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 228
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 229
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 230
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 231
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 232
    Temperature Sensor 3 263230C Green Temperature Sensor 4 263230D Black Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 233
    Temperature Sensor 3 263230C Green Temperature Sensor 4 263230D Black Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 234
    Temperature Sensor 3 263230C Green Temperature Sensor 4 263230D Black Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 235
    LATS software programs, and more, visit www.lghvac.com. LG Customer Information Center, Commercial Products 1-888-865-3026 USA LG Electronics, U.S.A., Inc. Follow the prompts for commercial A/C products.

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LG Multi V5 Service Manual

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SERVICE MANUAL

Variable Refrigerant Flow Outdoor Units

6.0 to 42.0 Tons

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Related Manuals for LG Multi V5

Summary of Contents for LG Multi V5

  • Page 1: Service Manual

    SERVICE MANUAL Variable Refrigerant Flow Outdoor Units 6.0 to 42.0 Tons…

  • Page 2
    4. For more technical materials such as submittals, catalogs, engineering, installation, best practices, and owner’s manuals, visit www.lghvac.com. For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.

  • Page 3: Table Of Contents

    Indoor Unit Addressing …………. 103-104 Pipe Detection Addressing …………105-110 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 4: Safety Precautions

    There is a risk of explosion, physical injury, or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 5
    There is risk of property damage. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 6
    Failure to carefully read and follow all instructions in this manual can result in equipment malfunction and property damage. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 7
    If the base collapses, the unit could fall and cause property damage or product failure. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 8: Nomenclature

    04 = Four Ports Series Number 2A = Series Number Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 9: Wiring Diagrams

    WIRING DIAGRAMS 208-230V Outdoor Units ARUM072BTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 10
    WIRING DIAGRAMS 208-230V Outdoor Units ARUM096BTE5 / ARUM121BTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 11
    WIRING DIAGRAMS 208-230V Outdoor Units ARUM144BTE5 / ARUM168BTE5 12/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 12
    208-230V Outdoor Units ARUM192BTE5 / ARUM216BTE5 / ARUM241BTE5 12/1 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 13
    WIRING DIAGRAMS 460V Outdoor Units ARUM072DTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 14
    WIRING DIAGRAMS 460V Outdoor Units ARUM096DTE5 / ARUM121DTE5 10/6 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 15
    WIRING DIAGRAMS 460V Outdoor Units ARUM144DTE5 / ARUM168DTE5 12/1 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 16
    460V Outdoor Units ARUM192DTE5 / ARUM216DTE5 / ARUM241DTE5 12/1 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 17: Refrigerant Flow Diagrams

    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 18
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 19
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 20
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 21
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 22
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 23
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 24
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 25
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 26
    Solenoid Valve Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 27
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 28
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 29
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 30
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 31
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 32
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 33
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 34
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 35
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 36
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 37
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 38
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 39
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 40
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 41
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 42
    Temperature Sensor Remarks Pressure Switch SVC Valve Strainer Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 43: Normal Operation/Compressor Control

    Inverter linear control as cooling and heating load increases Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 44: Basic Control

    Fan Motor Control Fan motor operates using Fuzzy logic. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 45: Special Control

    • Stop: Oil Return Operation will end if / when compressor protection control starts. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 46: Defrost Control / Partial Defrost Control

    3. Partial Defrost Control Operation will stop for the lower heat exchanger when the temperature rises above the set temperature. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 47
    (5) minutes (except for models with only one [1] compressor). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 48: Protection Control

    * Frequency Hold = Frequency (or RPM) is not increasing (can decrease). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 49
    29A or less 29A or less 29A or more 29A or more 41A or more 41A or more Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 50: Other Controls

    • If any errors are displayed, check corresponding wires / cables. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 51: Initial Setup

    Pre-Commissioning Device Configuration Worksheet. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 52
    Auto Addressing Procedure Ends. connected and have been successfully auto addressed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 53
    Figure 5: Quick Control Setting. DIP Switch DIP-SW01 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 54: Setting Optional Modes

    Fn14 oFF, oP1~oP3 except DOAS. Energy saving feature. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 55
    Level Change of Error Code CH200 SE14 on, oFF Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 56: Emergency Operation

    • During the emergency operation, cooling / heating capacity will be reduced. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 57
    Same as Normal Operation System error has occurred Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 58
    Is the refrigerant amount correct? Reverse switch, indoor units off. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 59
    • If outdoor unit switched to defrost mode while the auto refrigerant charge function was operating, restart auto refrigerant charge function only after defrost mode is finished. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 60
    • Press SW04C (X: Cancel) button, and turn No. 5 on the master outdoor unit PCB DIP switch bank SW01 to OFF after the function ends. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 61
    ITR has successfully completed. 8. If more than 30 minutes pass and “88” is still displayed, the ITR has failed. Contact your LG representative for technical assistance. 9. After a successful ITR, you can go to the LGMV Diagnostics tab, select Test Report, and save the .html data file. The report on the next page is a sample ITR report.
  • Page 62
    Setting Optional Modes Multi V ITR Result Report, Continued. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 63
    The results provided by running an Fd mode must not be con- sidered definitive proof that a system is properly operating. Fd code must not be left on without an LG trained service provider approving and guiding its use.
  • Page 64
    Heating Left Side (Off) Not Operating Fan Mode Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 65
    1,020 0.23 0.27 1,050 0.27 0.32 1,130 0.32 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 66
    *The system measures ambient temperature (minimum and maximum) in “Wait Time” to help determine when the system can start operating in Night Low Sound. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 67
    • A trained LG service provider must set this function during system installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 68
    Snow Removal Assist Mode and Rapid Defrost Mode Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 69
    434 / 2,990 (122.8) 334 / 2,304 (103.6) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 70
    (Default) Selected High Efficiency Function (Cooling Operation) Selected Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 71
    *op3 requires LG’s I / O Module (sold separately). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 72
    Smart Load Control can be used in almost every application except those where the outdoor unit is supporting a Dedicated Outdoor Air System (contact an LG representative for information). Smart Load Control will not have an impact on operation if the system is running in simultaneous cooling / heating (heat recovery systems only).
  • Page 73
    Outdoor Unit Assigned Reporting Duty Pd11 PDI Installed and Assigned Reporting Duty Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 74
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 75
    The Comfort Cooling Operation mode is set. No outdoor unit PCB reset or power cycle required. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 76
    • Maximum operation time of Pump Down is thirty (30) minutes (in case low pressure does not satisfy target levels immediately). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 77
    • Maximum operation time of Pump Out takes two (2) to five (5) minutes after the compressor starts. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 78
    5. Add refrigerant using the Refrigerant Auto Charge Function. Refrigerant Charging Valve Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 79
    For Heat Pump Systems, Not Used (Keep Closed) Vapor pipe Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 80
    • Heat Recovery Unit(s) Valves and EEVs are and / or compressor damage. Fully Open. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 81
    The Forced Oil Return function begins. PCB does not need reset. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 82
    Forced Defrost is Enabled. Oil Return Occurs Every Three (3) Hours Irrelevant of Need. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 83
    24,000 op26 Total Number of Indoor Units IDU2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 84
    Outdoor Unit Fan Speed Reduced by 100 RPM Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 85
    The Number of Partial Defrosts function begins. No outdoor unit PCB reset or power cycle required. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 86
    Use in applications where the LG-trained service technician wants to restart a system for diagnostic purposes, or to operate the system for an extended period with no power to one (1) or more indoor units. The system can operate safely without damage to the compressor if: •…
  • Page 87
    • Error will display continuously at the corresponding outdoor unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 88: Heat Recovery Units

    Liquid Bypass Valve Solenoid Assembly 1 Solenoid Assembly 2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 89: Dimensional Diagrams

    HEAT RECOVERY UNIT DIMENSIONAL DIAGRAMS PRHR022A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 90
    HEAT RECOVERY UNIT DIMENSIONAL DIAGRAMS PRHR032A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 91
    HEAT RECOVERY UNIT DIMENSIONAL DIAGRAMS PRHR042A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 92: Wiring Diagram

    HEAT RECOVERY UNIT WIRING DIAGRAM PRHR022A, 032A, 042A Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 93: Refrigerant Circuit Diagram

    D : Controls pressure between the high and low pressure vapor pipes during simultaneous operation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 94: Functions

    Heating Mode: Low Pressure Time = 0 Keep Close Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 95
    Temperature of Subcooler = T Subcooler Outlet – T Subcooler Inlet Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 96: Outdoor Unit Dip Switch Settings

    Master Outdoor Unit Slave1 Outdoor Unit Slave2 Outdoor Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 97: Heat Recovery Unit Settings

    3. Record the address assigned to each heat recovery unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 98: Due To Our Policy Of Continuous Product Innovation, Some Specifications May Change Without Notification

    6 7 8 two (2) are set to zone control. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 99
    • Any unused port must be sealed with a brazed copper cap, not with a plastic cap. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 100
    No. 3, 4 Valve 2 3 4 6 7 8 Control Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 101
    SW04M Increases the Valve Address by One (1) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 102
    Increases the Valve Address by One (1) SW05M Manual Addressing of Zoned Indoor Units Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 103: Indoor Unit Addressing

    12. Upon successful completion of the auto address procedure, record the system address assigned to each indoor unit by the auto address procedure. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 104
    7. Record the system address the outdoor unit assigned to each indoor unit by the auto address procedure. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 105: Pipe Detection Addressing

    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 106
    PCB. Auto pipe detection is incomplete. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 107
    PCB for five (5) minutes after the procedure has finished. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 108
    • Valves that do not have indoor units connected to them must be addressed with a number that has not been used. (Valves will not work if the address numbers are the same.) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 109
    • Valves that do not have connected indoor units must be addressed with a number that has not been used. (Valves will not work if the ad- dress numbers are the same.) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 110
    • If a central control is installed, it is impossible to set the master indoor unit in zoning. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 111: Test Run

    • Check / confirm that there are no error messages displayed on the indoor units, wired controllers, or the outdoor unit(s) SSD(s). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 112: Main Component Errors

    • If CH05/53/11 error occurs, check if auto-addressing is complete and the communication cables are properly installed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 113: Pcb Settings

    Switch Settings” page in the “PCB Settings” section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 114: Checking The Compressor

    0V (if digital tester is unavailable). Check coil and insulation resistors. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 115
    • If problems continue to occur even after following the procedures above, then both boards are defective. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 116: Checking The Electronic Expansion Valves

    • If liquid refrigerant is present in EEV, noise will be lower. Full open Open 1950 pulses Pulse Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 117
    • During assembly, or when the coil is removed, take care not to bend the casing pipe. Casing Casing Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 118
    IV EEV (red-white, red-orange, brown-yellow, brown-blue). Replace EEV. EEV is normal. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 119
    Red (+) and Black (-) are the multi-tester terminals. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 120
    W Terminal : Black (-) 0.2 ~ 0.6 V Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 121: Checking The Fan Ipm

    V Terminal : Black (-) W Terminal : Black (-) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 122: Checking The Outdoor Fan

    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 123: Checking The Valves

    5. Changes of solenoid valve operation can be verified by measuring bypass outlet piping temperature, detecting refrigerant sound, etc. [DC 500V]). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 124: Temperature Sensors

    Table 67: Temperature Sensor Resistance Values. Temperature Sensor Resistance Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 125: Error Codes

    All error codes can be viewed at the outdoor unit seven segment display (SSD) and with LGMV software. If an error codes shows on one (1) or more indoor unit zone controllers, it will display on LGMV, central controllers, BMS, or any other LG device connected to Comm bus — Internet A/B.

  • Page 126
    • Indoor unit EEPROM data is not available. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 127
    PCB for issues. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 128
    3 Slave2 outdoor unit inverter compressor overcurrent error. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 129
    • Defective outdoor unit PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 130
    • If the total connected indoor unit nominal capacity exceeds 192 Mbh for a single heat recovery unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 131
    3 Slave2 outdoor unit fan CT sensor error. nected or shorted. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 132
    • Damaged electrical condenser component (serving capacitor) on inverter driver board. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 133
    1 5 1 3 Slave2 outdoor unit difference between high and low pressure is too low. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 134
    Troubleshooting section to compare with actual system sensor error. temperature. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 135: Error Code Tables

    2 4 2 Network error of central controller. outdoor unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 136
    Measure the resistance of outlet pipe temperature sensor. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 137
    Checking communication cable connection Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 138
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 139
    Maximum 1/50~1/100 inches 11-13/16 inches Maximum 27-1/2 inches Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 140
    Outdoor Unit PCB Communication Error Between Indoor Unit and Outdoor Unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 141
    Replace the indoor unit PCB, perform the Auto Addressing procedure, and input the central control address. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 142
    Check the fan motor connection to the PCB only when power is OFF. Electrical shock can cause physical injury or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 143
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 144
    Recheck power and installation. page later in this section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 145
    — CH21 Comp.1 Comp.2 Comp.1 Comp.2 Comp.1 Comp.2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 146
    Check assembly. correct? Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 147
    Compressor wiring connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 148
    Check Bridge Diode P-R,S,T / N-R,S,T 0.38V ~ 0.7V Non-normal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 149
    Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 150
    Replace Inverter PCB assembly. display an error? Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 151
    PCB assembly correct? Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 152
    — CH26 Comp.1 Comp.2 Comp.1 Comp.2 Comp.1 Comp.2 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 153
    Recheck power and installation. later in this section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 154
    Compressor wiring connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 155
    Fix if errors are found. Replace strainer, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 156
    PCB, and indoor / outdoor unit installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 157
    / outdoor unit installation. the outlet, not at the inlet. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 158
    (especially if reverse connection at Y-branch. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 159
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 160
    Check the resistance of the Inverter compressor discharge temperature sensor. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 161
    High pressure sensor. Low pressure sensor. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 162
    Slave 1 12: 542 sensor error. Slave 2 13: 543 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 163
    T S R T S R Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 164
    * Check communication cables between outdoor units in the following order: PCB connections terminal block communication cables. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 165
    7. Outdoor unit and heat recovery unit PCB is defective. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 166
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 167
    Inverter Drive circuit Diode 0.38V ~ 0.7V Non-normal (Check diode) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 168
    PCB. Check communication cable and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 169
    Error No. 05. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 170
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 171
    Actual component appearance depends on model and system type. Correct Inverter EEPROM installation direction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 172
    Heat Sink” page later in this section. Check Inverter PCB Connection Installation Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 173
    See also Error Code No. 113, Outdoor Unit Liquid Pipe (Condenser) Temperature Sensor Error. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 174
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 175
    Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 176
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 177
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 178
    Is the fan PCB assembly correct? found. Recheck power and installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 179
    Actual component appearance depends on model and system type. Check connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 180
    Both the socket opening and the EEPROM opening must be in the same direction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 181
    Both the socket opening and the EEPROM opening must be in the same direction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 182
    A with B.) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 183
    IC07C GND (pin 5) IC07C Vcc (pin 8) Not Normal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 184
    A 10 pin harness for connecting Main PCB with External PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 185
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 186
    Inverter Drive circuit Diode 0.38V ~ 0.7V Non-normal (Check diode) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 187
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 188
    Inverter Drive circuit Diode 0.38V ~ 0.7V Non-normal (Check diode) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 189
    DC voltage connected. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 190
    See also Error Code No. 65: Outdoor Unit Liquid Pipe (Condenser) Temperature Sensor Error. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 191
    If the signal between the main PCB and the external PCB is normal, the communication LED on the external PCB blinks. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 192
    *Excessive refrigerant leak: Both the piping inlet and outlet temperatures are <50°F when the indoor unit is off (EEV 40 pulses). Also, a loud refrigerant flow noise was heard. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 193
    Replace 4 way valve. the hot gas valve. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 194
    (output should be 230 V AC). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 195
    Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 196
    Press the reset button. Replay on-boarding. Replace outdoor unit external PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 197
    (inlet or outlet water) is <0°C (32°F), and mid-temperature seconds. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 198
    Check fan connection installation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 199
    • Sensor resistance value will vary with the temperature. See below for the resistance values according to temperature (±5% tolerance). • • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 200
    6. When Steps 1 through 4 (or Steps 1 through 5 if the heat recovery unit PCB needs to be replaced) are completed successfully, perform the auto addressing and piping detection procedures. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 201
    5. If an indoor unit has not been connected to the first port (No. 1 Valve) of the heat recovery unit, set the heat recovery unit piping manually. Outdoor Unit Functions section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 202
    • • C = Heat Recovery Unit • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 203
    1. If Error No. 59 is displayed on the heat recovery unit, and Error No. 204 is displayed on the outdoor unit, these indicate that the outdoor unit software has NOT been upgraded to support heat recovery unit 3A models. Contact your LG representative for information.
  • Page 204
    4. If the red LED on the 485 modem still flashes even after it is replaced, replace the heat recovery unit PCB. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 205
    485 Modem on 2A Series Heat Recovery Units Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 206
    PCB Communication Error Between Indoor Unit and Outdoor Unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 207
    Error Between Indoor Unit and Outdoor Unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 208
    Images here are representative of system components. Actual component appearance depends on model and system type. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 209: Replacing The Inverter Pcb Heat Sink

    4. Reinstall the inverter PCB by reattaching its screws with a JIS screwdriver. Tighten the screws, but do not overtighten. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 210: Checking Input Voltage In Case Of Power On

    Input Voltage (3-Phase /3-Wire 460V±15% 460V) Terminal Terminal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 211
    Use caution when measuring the voltage; GND is separated. There is risk of electric shock, and physical injury or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 212: Checking Converter Dc Link Voltage In Case Of Compressor Operating

    DC Link Voltage 3-Phase / 3-Wire / 460V 650V±20% Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 213
    Abnormal Main (DC-Comm.) GND3 (pin2) 5V (pin1) 4.5V~5.5V Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 214: Checking Inverter Pcb In Case Of Power Off

    Diode (9EA) 0.38 ~ 0.7 V Not normal Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 215: Power System Wiring Diagram

    12V, 5V, GND2 12V, 5V, GND3 Comm. Module Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 216: Pcb Locations

    Main PCB External PCB Noise Filter Inverter PCB Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 217: Parts

    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 218
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. CN32_HUMID_BK CN31_SNOW_WH Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 219
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 220
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 221
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 222
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 223
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 224
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 225
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 226
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 227
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 228
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 229
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 230
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 231
    Actual component appearances may differ depending on manufacturing date, model, system type, etc. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 232
    Temperature Sensor 3 263230C Green Temperature Sensor 4 263230D Black Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 233
    Temperature Sensor 3 263230C Green Temperature Sensor 4 263230D Black Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 234
    Temperature Sensor 3 263230C Green Temperature Sensor 4 263230D Black Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 235
    LATS software programs, and more, visit www.lghvac.com. LG Customer Information Center, Commercial Products 1-888-865-3026 USA LG Electronics, U.S.A., Inc. Follow the prompts for commercial A/C products.

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