Sub-Zero with "Service" Flashing

Cause:

  • Excessive compressor run
  • Possible cooling issue

Core Issue:

  • Service flashing on control panel of 600 Series starting with serial number 1810000
  • Error code Service flashing
  • How to clear Service flashing
  • Service continues to return

Steps to Verify Issue:

  1. If temperatures are high, call for service.
  2. If temperatures are near normal, turn off the unit and Clean the Condenser.
  3. Verify nothing is obstructing the door from closing. See Door Closing Troubleshooting.
  4. Turn the unit back on. The error message should not appear.
  5. See also:

Answer:

If Service returns, or temperatures rise, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

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