ERROR CODE EXPLAINED
LG Air Conditioner
LG Air Conditioner CH93 Error Code
What it means
CH93 indicates a communication problem between the indoor and outdoor units; on newer models it can also appear when the outdoor unit is not receiving power.
Try this first
- After installation or relocation, have the installer check communication, power-cord, and cable connections.
- On models with separate indoor and outdoor power, make sure the outdoor unit is plugged directly into a wall outlet and its breaker is on.
- During normal use, unplug the unit or turn off its breaker for about 5 minutes, then restore power.
- If the code remains, request service.
Can I keep using it?Follow the manufacturer checks that match the condition shown by the appliance; model-specific details can vary.
Repair usually required?If the manufacturer directs the issue to service or the listed checks do not clear it, arrange professional appliance service.
If the error keeps returning
Use the linked official manufacturer support article for the exact source guidance and model-specific details.
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.