Sub-Zero Wine Storage Error Code 15 1 01

Error code 15 1 01 means the Zone 1 compressor relay on the control board is stuck in the closed position, supplying continuous 120V to the compressor. Normally the control board cycles the compressor on and off to maintain the target temperature. When the relay fails closed, the compressor runs without interruption, which can over-cool the zone and stress the sealed system. Replacing the control board is the required repair.

Continued use is not recommended. With the compressor running continuously, the zone temperature can drop well below the intended range, which may damage temperature-sensitive wine through excessive cold exposure. Prolonged compressor operation without cycling also accelerates wear and increases the risk of compressor failure or refrigerant system damage. Moving valuable wine to a properly functioning unit until the repair is completed is advisable.

Repair costs vary depending on the specific model and labor rates in your area. Control board replacement on Sub-Zero wine storage units typically falls in the range of $400 to $900 or more when including the part and professional labor. Obtaining a diagnostic estimate from an authorized service provider before proceeding is recommended, as exact costs depend on board availability and service call fees in your region.

A simple reset will not clear error code 15 1 01 because the fault reflects an actual hardware failure of the compressor relay, not a transient sensor or communication error. Even if the display clears temporarily after a power cycle, the relay will remain stuck closed and the compressor will continue running constantly. The underlying control board failure must be corrected before the error will resolve permanently.

The repair process involves confirming that 120V is continuously present at the Zone 1 compressor terminals even when no cooling demand exists, which confirms the relay is stuck closed. The wiring harness and connectors between the board and compressor should be inspected for shorts or heat damage. If the wiring is intact, the control board must be replaced. This repair involves live 120V circuits and refrigeration components, so it is best handled by a qualified technician.