Sub-Zero Refrigerator Error Code 15 2 01

Error code 15 2 01 means the freezer compressor relay is stuck in the closed position, causing the compressor to receive power continuously. Normally, the control board cycles the compressor on and off based on temperature demands. When this relay fails closed, the compressor runs without interruption, which can lead to over-cooling, excessive frost buildup, and compressor wear. The control board is the primary component to inspect and replace to resolve this fault.

Continued use with this error active is not recommended for extended periods. A compressor running without normal cycling is at risk of overheating and early failure, and the freezer compartment may over-cool or develop heavy frost buildup that reduces performance. Addressing the fault promptly will prevent further damage to the compressor and other related components.

A reset is unlikely to permanently clear error 15 2 01 because the fault is caused by a physical relay failure on the control board, not a transient software glitch. Even if a reset temporarily clears the code, it will return as soon as the system detects the compressor running outside its normal cycle pattern. The underlying relay fault must be corrected by replacing the control board for the error to be resolved.

Diagnosing and replacing the control board on a Sub-Zero refrigerator requires familiarity with appliance electronics and proper safety precautions when working with live circuits. A knowledgeable DIYer can inspect wiring for obvious damage, but replacing the control board is generally the recommended repair path and involves handling sensitive electronics. If you are not comfortable working with appliance control boards, a qualified technician is the safer choice.

Repair costs vary depending on labor rates in your area and the specific control board required for your model, but control board replacements on high-end refrigerators like Sub-Zero units typically range from several hundred to over a thousand dollars including parts and labor. Getting a diagnosis confirmed by a Sub-Zero certified technician before ordering parts is advisable to avoid unnecessary expense.