Sub-Zero Refrigerator Error Code 15 C 01

Error code 15 C 01 means the AC condenser fan relay on the control board is stuck in the closed position, which keeps power supplied to the compressor at all times. The compressor should cycle on and off based on temperature demands, but this fault prevents that from happening. The control board must be inspected and replaced to resolve the issue.

Continued operation with error code 15 C 01 active is not recommended. With the compressor running continuously, the refrigerator can over-cool food and beverages, and the compressor itself is at risk of damage from uninterrupted operation without its normal rest cycles. It is best to address the fault promptly to avoid secondary damage.

Repair costs for error code 15 C 01 typically involve the price of a replacement control board plus labor. Control board parts for Sub-Zero refrigerators generally range from $200 to $600 or more depending on the model, and professional labor can add $100 to $300 depending on your location and the technician. Total repair costs commonly fall in the range of $300 to $900.

The primary fix for this error code is replacing the main control board, which involves working with AC and DC electrical circuits inside the refrigerator. While a knowledgeable DIYer may be able to replace the board, the diagnostic process requires verifying live voltage at the compressor circuit, which carries real shock risk. Most homeowners should have a qualified appliance technician perform this repair.

A simple power reset is unlikely to permanently clear error code 15 C 01 because the underlying cause is a hardware failure of the relay on the control board. The relay contacts are physically stuck closed and cannot be reset through a software command or power cycle. The fault will return as long as the faulty control board remains in place.