Model reference
LG AUUW-B
Air Conditioner
1 document29 error codes3 service modes
Available documentation
Service Manual
- Universal System Air Conditioner SVC MANUAL (General)172 pg
MyPros+ Max
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- Step-by-step diagnostics from the service manual
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Error codes (29)
CodeMeaning
01Indoor room air temperature thermistor is open or short circuit.02Indoor inlet pipe temperature sensor is open or short circuit.03Communication error between indoor unit and wired remote controller.04Drain pump or float switch error (float switch open when it should be…05Communication error between indoor unit and outdoor unit.06Indoor outlet pipe temperature sensor is open or short circuit.07Different operation mode error between indoor units.21DC peak / IPM fault22CT2 maximum current exceeded (total current exceeds 14A threshold).23DC link low voltage24Low pressure or high pressure switch is open.25Abnormal AC input voltage26DC compressor position detection error.27PSC fault28DC link high voltage32Inverter compressor discharge pipe temperature too high (105°C or above).33Constant compressor discharge pipe temperature too high (105°C or above).40CT (current transformer) sensor circuit malfunction (open/short).41Inverter discharge pipe thermistor error (open/short).44Outdoor air temperature thermistor error (open/short).45Condenser pipe temperature thermistor error (open/short).46Suction pipe temperature thermistor error (open/short).47Constant compressor discharge pipe thermistor error (open/short).51Over capacity53Communication signal error between indoor and outdoor units (displayed on…60EEPROM checksum error on outdoor PCB.61Condenser pipe sensor temperature too high (65°C or above).62Heat sink sensor temperature too high (85°C or above).65Heat sink temperature thermistor error (open/short).Service modes (3)
- Child Lock["Press Timer key and Min key simultaneously on wired remote controller."]
- E.S.P. Setting Mode (Ceiling Concealed Duct)["Turn on the unit by pressing On/Off button.","Press Timer and Wind (Fan Speed) buttons…
- Forced Operation
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