LG Heat Pump Error Code CH67

CH67 indicates a BLDC motor fan lock fault on the outdoor unit of your LG heat pump. The control board has detected that the outdoor fan motor is not rotating properly, either due to a physical obstruction, a wiring connection problem, or a motor or PCB failure. The system shuts down to protect internal components until the fault is diagnosed and corrected.

No. The CH67 fault causes the heat pump to shut down because continuing to operate with a locked or non-functioning fan motor can overheat the outdoor unit and damage the compressor or PCB. Do not attempt to bypass or ignore the fault. Leave the unit powered off until the cause is identified and corrected.

Repair cost depends on what is causing the fault. Clearing an obstruction or reseating a connector involves only labor, which can range from around $75 to $150 for a service call. Replacing the outdoor BLDC fan motor typically costs between $200 and $500 including parts and labor. If the outdoor PCB requires replacement, costs can range from $300 to $700 or more depending on the model and part availability.

Some causes of CH67 are accessible to a knowledgeable DIYer, particularly clearing debris from the outdoor fan or reseating a loose wiring connector. However, diagnosing a failed motor, checking DC signal output from the PCB, or replacing the motor or control board requires electrical knowledge and proper tools. If the basic visual checks do not resolve the code, a qualified technician should perform the electrical diagnostics.

A reset may temporarily clear the code, but if the underlying problem such as an obstruction, poor connection, failed motor, or faulty PCB is still present, the CH67 fault will return quickly after restart. A reset is only a useful step if the cause has already been identified and resolved. Repeated resets without fixing the root cause risk additional component damage.