LG ACHH Series Manual page 50

The phenomena from main component failure
Failure code
CHxx052
CHxx053
CHxx054
CHxx057
CHxx059
CHxx060
CHxx062
CHxx065
CHxx067
Control when occurring
Communication defect occurrence
Correspond cycle stop
Communication failure between Indoor and Outdoor Unit
Communication failure between Indoor and Outdoor Unit
Stop applicable cycle
Refrigerator 3 phase power opposite phase / Omitting of phase S power
Refrigerator 3 phase power opposite phase connection / Omitting occurrence of phase
Correspond cycle stop
Communication defect between an inverter board and a main board
Communication defect occurrence with an inverter control part
Correspond cycle stop
Installation Failure of Series Model Outdoor Unit
Installation Failure of Series Model Outdoor Unit
Stop applicable cycle
Correspond cycle stop
Surge in inverter board IPM temperature
Surge in inverter board IPM temperature
Correspond cycle stop
Inverter IPM temperature sensor defect
Inverter IPM temperature sensor Short/Open
Correspond cycle stop
Stop applicable cycle
Failure name
Occurrence condition
Communication error
Automatic return to a normal condition
Automatically return to normal condition
Automatic return to a normal condition
Automatic return to a normal condition
Automatically return to normal condition
Inverter PCB EEPROM error
Inverter PCB EEPROM error
Automatic return to a normal condition
Automatic return to a normal condition
Automatic return to a normal condition
Fan lock
Fan locked
Automatically return to normal condition
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Removal condition