Many things can cause your Sub-Zero refrigerator’s temperature problems including:

  • One of several fans in the unit may not work properly
  • Temperature sensors or the thermostat that tells the unit to cool can malfunction
  • A sealed system problem, made up of the major cooling components such as the compressor, evaporator and condenser
  • A problem with a door seal or gasket
  • Only a factory certified service technician can determine the exact cause of a cooling issue.

Common indications of a temperature problem in a Sub-Zero refrigerator

  • Warm temperatures in a refrigerator.
  • High temperatures reported in refrigerator section
  • Why is the refrigerator not cooling or won’t hold set temperature
  • Unit does not cool well in warm months or humid, warmer temperatures
  • Food spoils before expiration date or food going bad quickly

For any warm temperatures in a Sub-Zero refrigerator, follow these steps:

  1. Verify the unit has been turned on for at least 24 hours, if not, wait 24 hours for unit to cool properly.
  2. Clean the condenser if not done in the last 3 months
  3. Verify there are no error codes or service indicators on the electronic control panel
  4. Check the set point temperatures for the compartment.  On an electronic control panel 38° is the factory setting.  For a dial control, set the dial between 4 – 6, 1 is warmest, 10 is coldest.
  5. Correct or remove anything obstructing the door from closing
  6. Ensure the door was not left ajar for a period of time.
  7. Turn the door ajar alarm on if not being used to ensure door is closing all the way.
  8. New groceries or warm food will raise temperatures for a period of time
    Wait 24 hours for the unit to return to normal temperatures after correcting any or all of the above.

If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Our Certified Sub-Zero Refrigerator Appliance Repair Specialists to schedule an appointment for repair by calling Appliance Guard at (310) 318-3538