LG ACHH Series Manual page 49

Failure code
CHxx042
CHxx043
CHxx045
CHxx046
CHxx050
Control when occurring
Low pressure sensor is short/open
Stop applicable cycle
High pressure sensor is short/open
Stop applicable cycle
Heat exchanger temperature sensor error
Heat exchanger temperature sensor is short/open
Stop applicable cycle
Suction temperature sensor error
Suction temperature sensor is short/open
Stop applicable cycle
Chiller 3 phase power missing phase
Chiller 3 phase power missing phase
Stop applicable cycle
The phenomena from main component failure
Failure name
Occurrence condition
Low pressure sensor error
Automatically return to normal condition
High pressure sensor error
Automatically return to normal condition
Automatically return to normal condition
Automatically return to normal condition
Automatically return to normal condition
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Removal condition