LG HVAC Error Code 42

Where this code is documented

1 manual in the MyPros+ library documents this code for LG hvac.

Models covered by the manuals that document this code

• LAU090HYV
• LAU120HYV
• LAXXXHSV
• LAXXXHSV2
• LMO240
• LMO360
• LMUXXXHV
• LSN091HSV3
• LSN121HSV3
• LSN181HSV3
• LSN240HSV
• LSN240HSV2
• LSN240HSV3
• LSN305
• LSN306
• LSN307
• LSN360
• LSU091HSV3
• LSU121HSV
• LSU181HSV3
• LSU240HSV3
• LSU307HV3
• LSU360HV3
• LSXXXHSV

More models are covered than are listed here.

• 1PCB sees IDU pipe or air thermistor as open or shorted…
• 10LS902HPV/LS122HPV/LA09xHV/LA12xHV
• 12PCB sees IDU middle pipe thermistor as open or shorted.
• 13Reactor or electronic noise filter failure in ODU.
• 14Compressor Phase Amperage Error.
• 2PCB sees ODU or IDU thermistor(s) as open or shorted…
• 21Inverter compressor high amperage.
• 22Inverter unit high amperage.