Sub Zero Refrigerator not running

If your Sub Zero refrigerator has stopped running and the display looks dead, start with the parts and power that most commonly fail. The dispenser control board is a frequent culprit; inspect it for burn marks and replace it if damaged. Next check incoming power: make sure the plug is fully seated, the outlet is live and not a ground fault outlet, and that no breaker has tripped or fuse blown. If the display remains dead, the user control and display board can fail next. Also check the wire harness between the panel and the boards for loose or damaged connectors, and try a simple power reset after a surge by unplugging the fridge or switching the breaker off for a few minutes. A failed main control board is possible but much less common, so test the more likely parts first. If you need a replacement, enter your model number on RepairClinic.com to find the exact control board, dispenser board, harness, or other part that fits your refrigerator.

01 - Sub Zero Refrigerator Dispenser Control Board

If the refrigerator display appears completely dead, it's possible the dispenser control board has failed. You should inspect the board for any burn marks and replace it if it appears damaged.

Enter model number to search for the required part specific to your product

Need help finding your model number?

Shop all Sub Zero Refrigerator Dispenser Control Board Parts

Highly Likely

02 - Incoming Power Problem

Ensure plug is tightly pushed into a regular electrical outlet and the outlet is supplying power. Using a ground fault outlet for a refrigerator is not recommended. Confirm that no circuit breakers have tripped or fuses have blown.

Highly Likely

03 - Sub Zero Refrigerator User Control and Display Board

If the refrigerator display appears completely dead, it's possible the user control and display board has failed. You should inspect the board for any burn marks and replace it if it appears damaged.

Shop all Sub Zero Refrigerator User Control and Display Board Parts

Common

04 - Disconnected or Damaged Wire Harness

The wires from the control panel to the control board may be loose or have become disconnected. Make sure the wire harness connectors are tight. A damaged wire harness will need to be replaced.

Common

05 - Power reset

After a power surge or power outage, refrigerator operation could be temporarily affected. Full operation can sometimes be restored through a power reset by either unplugging the appliance's power cord for a few minutes and then plugging it back in or switching off the circuit breaker for the refrigerator then switching it back on.

Common

06 - Sub Zero Refrigerator Control Board

If nothing is working on the refrigerator, it's likely the control board is defective. However, this is almost never the cause. Before replacing the main control board, test all of more commonly defective parts. If none of the other components are defective, consider replacing the control board.

Shop all Sub Zero Refrigerator Control Board Parts

Less Common

07 - Sub Zero Refrigerator Main Control Board

If nothing is working on the refrigerator, it's likely the main control board is defective. However, this is almost never the cause. Before replacing the main control board, test all of more commonly defective parts. If none of the other components are defective, consider replacing the main control board.

Shop all Sub Zero Refrigerator Main Control Board Parts

Less Common