Samsung Refrigerator Error Code F Comp Motor Constraint Error

This error means the inverter control system has detected that the freezer compressor motor is mechanically constrained and cannot rotate normally. The refrigerator shuts down the compressor to prevent further damage. The root cause can be a seized compressor, a faulty inverter PCB, low input voltage, or abnormal refrigerant system pressure. A technician should diagnose the compressor operation, input voltage, and inverter board before determining next steps.

When this error is active, the freezer compressor is not running, which means your refrigerator and freezer will lose cooling ability over time. Continuing to run the appliance in this state risks food spoilage and will not resolve the underlying fault. It is best to address the error promptly and transfer perishable food to an alternate storage location until the repair is complete.

A power reset may temporarily clear the error code, but if the underlying mechanical or electrical fault still exists, the error will return once the refrigerator attempts to restart the compressor. Resetting without diagnosing and correcting the root cause does not fix the problem and can delay necessary repairs. The compressor operation, input voltage, and inverter PCB should all be inspected to resolve the fault permanently.

Some causes, such as verifying that household voltage is stable and adequate, can be checked without specialized tools. However, diagnosing and repairing the compressor, inverter PCB solder joints, or refrigerant system requires technical knowledge, specialized equipment, and in the case of refrigerants, proper certifications. Most homeowners should contact a qualified appliance technician for this repair.

Repair costs vary widely depending on the root cause. Inverter PCB replacement typically ranges from around $150 to $350 including parts and labor. Compressor replacement is significantly more expensive, often ranging from $400 to $700 or more depending on the model and labor rates in your area. A proper diagnosis is essential before committing to any repair cost.