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Undercounter (UC-24BG) Fan Operation


  • When do the fans run?
  • Evaporator fan running when compressor is not
  • Fan runs when door is closed


The condenser fan runs whenever the compressor is running.

The evaporator fan runs:

  • When the compressor is running
  • During five minutes after the door is closed

The evaporator fan will run to help defrost.

  • "Fan assist defrost" means the evaporator fan will run If the compartment thermistor reaches high offset before the evaporator thermistor is warm enough to have melted the frost.

Contact the Sub-Zero Group Technical Advisor Team for further assistance at [email protected], or call (800) 919-8324, Monday-Friday, 7:30 a.m. - 5:00 p.m. CST.


Need further assistance? Contact Customer Care at 800.222.7820 or provide your information below and request a Customer Care representative contact you.

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