LG Air Conditioner Error Code CH00

CH00 on an LG air conditioner means no error is present. It is a status indicator confirming that the unit's self-diagnostic system found no active or stored faults. You may see it during diagnostic mode, after a fault is cleared, or briefly during startup. It is not a cause for concern on its own.

Yes, CH00 poses no safety concern. The code simply means the system's diagnostics found nothing wrong. Continue operating the unit normally. If you notice reduced performance alongside this display, investigate airflow and refrigerant levels as a next step.

There is no repair cost associated specifically with CH00 since it indicates no fault is present. If a technician visit is needed to investigate a performance issue that is not triggering a specific error code, diagnostic service call fees typically range from $75 to $150 depending on your region and the service provider. Any additional repair costs would depend on what is physically found during inspection.

No repair is needed specifically for CH00 because it indicates a fault-free status. However, if the unit is not performing correctly despite showing CH00, the underlying issue may be mechanical, such as low refrigerant, restricted airflow, or a dirty coil. Those conditions require separate inspection since the electronics may not log them as a specific error code.

CH00 does not need to be cleared because it is not an error. Performing a reset will simply cycle the unit through its startup routine, after which CH00 may briefly appear again before the display returns to normal operation. No reset procedure is required.