Sub-Zero Wine Storage Error Code 15 3 01

Error code 15 3 01 means the Zone 3 compressor relay is stuck in the closed position, causing 120V to be delivered to the compressor continuously without interruption. The control board has detected that it cannot cycle the compressor off as intended. This requires prompt attention to avoid compressor damage and overcooling of Zone 3.

Continuing to operate the unit with this error active is not recommended. The Zone 3 compressor is running without stopping, which will cause it to overheat and fail prematurely. Additionally, Zone 3 temperatures may drop well below the setpoint and potentially damage your wine collection. The unit should be serviced as soon as possible.

Repair costs typically depend on whether only the control board needs replacement or if the compressor has also been damaged by continuous operation. Control board replacement on Sub-Zero wine storage units generally ranges from a few hundred dollars to over a thousand dollars including parts and labor. Getting a diagnostic visit from an authorized technician first will give you a more accurate estimate for your specific situation.

This repair involves working with 120V AC circuits and internal control board components, so it is best handled by a qualified appliance technician. The primary fix is verifying the fault and replacing the control board. Attempting this without proper electrical knowledge and tools carries a risk of injury or further damage to the unit.

A simple power reset is unlikely to clear this error if the relay is physically stuck in the closed position, since the hardware fault will still be present when power is restored. If the fault is caused by a control board logic error, a reset may temporarily clear it, but the code will return. The underlying relay or board issue must be repaired for the error to clear permanently.