LG ACHH Series Manual page 52

The phenomena from main component failure
Failure code
CHxx090
CHxx091
CHxx093
CHxx104
CHxx105
CHxx106
CHxx107
Control when occurring
Individual Inletwater temperature sensor error
Individual Inletwater temperature sensor is short/open
Stop applicable cycle
Individual Outletwater temperature sensor error
Individual Outletwater temperature sensor is short/open
Stop applicable cycle
Control box inner temperature sensor error
Control box inner temperature sensor is short/open
Stop applicable cycle
Communication Error between Outdoor Unit
Communication Error between Outdoor Unit
Stop applicable cycle
Stop applicable cycle
Stop applicable cycle
Stop applicable cycle
Failure name
Occurrence condition
Automatically return to normal condition
Automatically return to normal condition
Automatically return to normal condition
Automatically return to normal condition
Fan board communication error
Fan board communication error
Automatically return to normal condition
Fan PCB IPM fault
Fan PCB IPM fault
Automatically return to normal condition
Fan DC link low voltage error
Fan DC link low voltage
Automatically return to normal condition
- 52 -
Removal condition