LG ACHH Series Manual page 51

Failure code
CHxx075
CHxx077
CHxx079
CHxx086
CHxx087
Control when occurring
Stop applicable cycle
Stop applicable cycle
Stop applicable cycle
CYCLE Main PCB EEPROM error
Main PCB EEPROM access error
Stop applicable cycle
Fan PCB EEPROM access error
Stop applicable cycle
The phenomena from main component failure
Failure name
Occurrence condition
Fan CT sensor error
Fan CT sensor is short/open
Automatically return to normal condition
Fan over-voltage error
Fan over-voltage
Automatically return to normal condition
Fan start failure error
Fan start failure
Automatically return to normal condition
Automatically return to normal condition
Fan PCB EEPROM error
Automatically return to normal condition
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Removal condition