CH01
Meaning
Indoor room temperature sensor is faulty or disconnected.
Causes
- Sensor damage
- Loose connection
Solution
- Reconnect sensor
- Replace sensor
LGSplit Air Conditioner
General Series
Common LG split air conditioner error codes with causes and solutions.
- Codes may vary slightly depending on model
CH02
Meaning
Evaporator pipe sensor malfunction.
Causes
- Sensor failure
- Loose wiring
Solution
- Replace sensor
CH03
Meaning
Drain pump is not working properly.
Causes
- Blocked drain
- Pump failure
Solution
- Clean drain
- Replace pump
CH05
Meaning
Indoor and outdoor units are not communicating.
Causes
- Loose wiring
- PCB fault
Solution
- Reconnect wire
- Replace PCB
CH10
Meaning
Indoor fan motor is not operating properly.
Causes
- Motor failure
Solution
- Replace motor
CH21
Meaning
Compressor is drawing excessive current.
Causes
- Compressor issue
- Power issue
Solution
- Check compressor
- Fix power supply