Sub-Zero with "Service" Flashing


  • Excessive compressor run
  • Possible cooling issue


  • Service flashing on control panel
  • Error code Service flashing
  • How to clear Service flashing
  • Service continues to return

Steps to Verify Issue:

  1. If temperatures are high, contact Factory Certified Service to schedule an appointment for repair.
  2. If temperatures are near normal, turn off the unit and Clean the Condenser.
  3. Verify nothing is blocking the door from closing. See Door Closing Troubleshooting.
  4. Turn the home circuit breaker to the unit off for 30 seconds then back on again. The error message should no longer appear.
  5. If the Service light returns, or temperatures rise, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.

See also:

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