ERROR CODE EXPLAINED
LG Air Conditioner
LG Air Conditioner CH34 Error Code
What it means
The air conditioner activated overheating protection.
Try this first
- Turn the air conditioner off.
- Check that the outdoor unit has adequate ventilation.
- Remove clutter or obstructions around the outdoor unit.
- If heating, clean the indoor air filter.
- Allow the system to cool.
- Turn power off for about 5 minutes before restarting.
Can I keep using it?🔴 Overheating protection active
Repair usually required?✅ Often no if airflow is corrected
If the error keeps returning
If CH34 returns after the recommended troubleshooting, LG recommends inspection or service.
Official source
Troubleshooting information verified against manufacturer support documentation.
View manufacturer support page →Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.