Sub-Zero Shuts Off by Itself
- Why does a Sub-Zero sporadically shut off?
- Sub-Zero refrigerator or freezer shuts off by itself
- Refrigerator or freezer turns off by itself
- Sub-Zero powers off by itself
Classic (formerly Built-In) series units power off after initial start-up. 648PRO models will run a self-test periodically.
If the unit lights are off, but it is still cooling, see also:
- If the door was left open for an extended time, such as for cleaning, refer to Sub-Zero Light Terminators.
- Sub-Zero Interior Lights Turned Off
- Refrigerator Lights or Light Switch Not Working
- Classic Series Lights Not Working but Unit Running
To troubleshoot a Sub-Zero unit that is shutting off by itself:
- Make sure the unit's electrical supply meets specifications. If using generator-supplied power, refer to Sub-Zero Generator Considerations.
- Confirm the unit is turned on.
- On electronic control panels, press the On/Off button or Power button to turn the unit on.
- Some models show "O FF" when the unit is off.
- On dial models (200/300, 500), verify the dial has not been turned to OFF.
- Verify the unit door or drawer was not left open for an extended period of time. If equipped, verify the door ajar alarm is being used.
- Verify the light switch is operational.
- Verify the unit is not in Sabbath Mode.
- Turn the home circuit breaker to the unit off for 10 seconds then back on again.
- Retest the unit operation.
- Verify the unit's power cord is securely plugged into a dedicated electrical outlet by unplugging the unit, then plug back into the outlet.
- Verify electrical outlet has power by plugging in a different appliance, extension cord, or phone charger to test.
- Verify unit is not connected to a GFCI.
- Make sure other appliances or outlets are working in the room.
- 700BC, 700BR, 700BF, and drawer section of 427R make sure wire harness (control cable) is securely inserted into back wall of cabinet and control panel.
- If the Sub-Zero continues to shut itself off after following these steps, service is needed to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.
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