LG error code CH02
What it means
Indoor pipe (coil) temperature sensor fault.
Possible causes
Indoor coil sensor open or short Damaged sensor harness Loose connector at indoor PCB
Suggested fix
Inspect wiring from the sensor to the PCB and measure resistance at ambient and operating temperatures; renew the thermistor or repair the harness if any irregularities are found.
Safety first. Isolate the power supply before inspecting any unit. Refrigerant-circuit
and electrical repairs must be carried out by a qualified, registered technician.
Other LG codes
- CH01 — Indoor air (room) temperature sensor fault.
- CH03 — Drain pump or condensate removal error.
- CH05 — Communication fault between the indoor and outdoor unit.
- CH09 — Indoor unit EEPROM or memory error.
- CH10 — Indoor fan motor fault or abnormal fan operation.
- CH21 — Outdoor DC compressor IPM (inverter power module) fault.
- CH22 — Outdoor current transformer (CT) error.
- CH23 — Outdoor DC compressor overcurrent protection.
- CH61 — High temperature protection in outdoor unit (cooling) or indoor unit (heating).
- CH67 — Outdoor fan motor fault.