LG Air Conditioner Error Code 14

Error code 14 on an LG air conditioner indicates a compressor phase current error. This fault is exclusive to models equipped with a 180-degree driver compressor control system. The inverter board has detected an abnormal current level in one or more of the three phases driving the compressor motor, and the unit has shut down to prevent compressor damage.

No, you should not attempt to operate the unit while error code 14 is active. The system has shut down automatically to protect the compressor from damage caused by abnormal phase currents. Continuing to force the unit to operate could result in permanent compressor failure, which is one of the most expensive repairs on any air conditioning system.

Repair costs for error code 14 vary significantly depending on the failed component. Inverter board or IPM replacement typically ranges from $200 to $600 including labor, while a failed compressor can cost anywhere from $600 to $1,500 or more depending on unit size and model. A technician will need to diagnose which component has failed before an accurate estimate can be provided.

Diagnosing and repairing error code 14 requires working with high-voltage inverter circuitry and three-phase compressor wiring, which is not safe for untrained individuals. A qualified HVAC or appliance technician should perform resistance checks on the compressor windings, inspect the inverter board and IPM, and verify phase output voltages. Attempting repairs without proper training and equipment creates a serious risk of electric shock or further damage to the unit.

A power reset may temporarily clear the fault and allow the unit to restart, but if the underlying hardware problem persists, the error will return shortly after the compressor attempts to run again. Resetting without addressing the root cause risks further damage to the compressor or inverter board. The fault should be diagnosed and repaired before returning the unit to normal operation.