Samsung Refrigerator Error Code Motor Locked

Motor Locked means the compressor inverter board has detected that the compressor motor is not rotating as commanded. The inverter PCB signals this fault by blinking its LED. The condition can be caused by a faulty inverter board, incorrect input voltage, or a physically seized or electrically failed compressor motor.

A power reset may temporarily clear the fault display, but if the underlying cause is a failed inverter PCB or a seized compressor, the error will return as soon as the refrigerator attempts to run the compressor again. The root cause must be diagnosed and repaired for the error to be permanently resolved.

If the inverter PCB is the cause, parts and labor typically range from around $150 to $400 depending on the model and service rates in your area. If the compressor requires replacement, the total cost including refrigerant handling generally ranges from $400 to $800 or more. Getting a diagnosis first helps determine whether repair is cost-effective compared to replacement of the unit.

Checking the input voltage to the inverter PCB is something a skilled DIYer with a multimeter can perform. Replacing the inverter PCB is also within reach for someone comfortable working with appliance electronics. However, if the compressor itself needs replacement, the repair involves refrigerant recovery and recharge, which requires EPA Section 608 certification and is not a DIY repair.

The refrigerator will not cool effectively with this error active, since the compressor is not running. Perishable food is at risk if the condition is not addressed promptly. There is no immediate fire or shock hazard in most cases, but the appliance should be serviced as soon as possible to prevent food spoilage.