LG ACHH Series Manual page 48

The phenomena from main component failure
Failure code
CHxx028
CHxx029
CHxx032
CHxx034
CHxx035
CHxx036
CHxx040
CHxx041
Control when occurring
Inverter DC link high voltage error
Defect from DC voltage and over-charge
Stop applicable cycle
Inverter compressor over current
Correspond cycle stop
Surge in inverter #1, #2 compressor discharge temperature
Surge in inverter #1, #2 compressor discharge temperature
Stop applicable cycle
Compressor discharge pressure excessive increase
High pressure side pressure excessive increase occurrence
Correspond cycle stop
Compressor inlet pressure excessive decrease
Low pressure side pressure excessive decrease occurrence
Correspond cycle stop
Low pressure ratio error occurrence
Correspond cycle stop
Inverter compressor CT sensor error
Inverter compressor CT sensor is short/open
Stop applicable cycle
Inverter compressor discharge temperature sensor error
Inverter compressor discharge temperature sensor is short/open
Stop applicable cycle
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Failure name
Occurrence condition
Automatically return to normal condition
CT value excess
Automatic return to a normal condition
Automatically return to normal condition
Automatic return to a normal condition
Automatic return to a normal condition
Low pressure ratio error
Automatic return to a normal condition
Automatically return to normal condition
Automatically return to normal condition
Removal condition