LG Air Conditioner Error Code CH67

CH67 indicates an outdoor BLDC fan motor lock fault, meaning the control board has detected that the outdoor fan motor is not operating correctly. The motor may be physically blocked, have an internal failure, or there may be a wiring problem between the motor and the control board. The system shuts down to prevent further damage when this condition is detected.

A reset may temporarily clear the code, but if the underlying problem is not resolved, CH67 will return once the system attempts to run the outdoor fan again. It is important to diagnose and correct the root cause before relying on a reset. Repeatedly restarting the unit without fixing the fault can cause additional damage to the motor or control board.

Repair costs depend entirely on the root cause. Clearing a debris obstruction costs nothing beyond a service call fee, which typically ranges from $75 to $150. Replacing the outdoor BLDC fan motor generally runs between $200 and $500 including parts and labor. If the outdoor control board also needs replacement, total costs can range from $300 to $700 or more depending on the unit model and local labor rates.

Some causes of CH67 are DIY-accessible. With the unit powered off, you can visually inspect the outdoor fan for obstructions and try rotating the blades by hand to check for physical restrictions. Clearing debris or allowing ice to thaw may resolve the fault. However, if the motor wiring, the BLDC motor itself, or the outdoor control board needs replacement, a qualified technician should handle that work.

No. CH67 means the outdoor fan motor is not operating, and running the air conditioner without proper fan operation can cause the outdoor unit to overheat and damage the compressor. The system typically shuts itself down as a protective measure. Leave the unit off until the fault has been diagnosed and corrected.