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Model reference

LG LP121CEM

Air Conditioner

1 document7 error codes1 service mode

Available documentation

Service Manual

  • Window Air Conditioner SVC MANUAL MODEL: LP121CEM-Y849 pg
    Covers this model
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Error codes (7)

CodeMeaning
CH 01Indoor Air Thermistor ErrorCH 02Indoor Coil Thermistor ErrorCH 03Outdoor Air Thermistor Error (PTHP Only)CH 04Outdoor Coil Thermistor Error (PTHP Only)CH 05Mode ErrorCH 06Set point ErrorCH 07Bad Thermistor Wiring

Service modes (1)

  • LED Self-DiagnosisObserve the green OPERATION LED located on the Display PCB. The LED flashes a code pattern to…

Full entry steps, exit procedures, and test sequences are available in Max.

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