LG · Air Conditioner

LG Air Conditioner CH02 error code

Difficulty: Hard · Cost: $80–$200 · Duration: 2m

The CH02 error is an auto-stop protection error on LG air conditioners that indicates a fault in the indoor pipe temperature sensor circuit. It may also appear as E1 on some models. Unplugging the unit and waiting 2 minutes sometimes clears a temporary glitch. If the error comes back after resetting the sensor or its wiring needs professional replacement.

Common causes

Short or open circuit in the indoor pipe temperature sensor
Wiring to the sensor is loose or damaged
Indoor pipe sensor has malfunctioned or failed

How to fix it

1

Unplug the unit and wait at least 2 minutes to allow the power to fully discharge
2

Plug the unit back in and check if the error has cleared
3

If CH02 or E1 returns after resetting contact a technician for sensor inspection and replacement