Sub-Zero Classic Series Service Icon Flashing and Alarm Chiming


  • Major error code logged


  • Service icon flashing and alarm chiming
  • Elevated temperatures in unit with wrench flashing and alarm chiming
  • Classic (formerly Built-In) model beeping with the wrench flashing
  • Wrench is blinking on the control panel on a Classic that is chiming
  • Alarm chiming with door shut

Steps to Verify Issue:

Troubleshooting steps apply to any service icon that appears with the alarm chiming:

  1. It may be possible to stop the alarm from chiming for 24 hours without correcting issues or errors. See Classic (Formerly Built-In) Series Alarm Silencing.
  2. Verify unit is on a dedicated power supply.
  3. Turn the home circuit breaker to the unit off for 30 seconds then back on again.
  4. Retest the unit operation.
  5. If these troubleshooting steps do not resolve the issue, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.
    • If present, share any error codes and current temperatures when contacting the service provider.

See also, Classic Series with Service Icon Steady and Alarm Chiming.

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