- Fan in unit not working properly
- Temperature sensor or thermostat malfunction
- Compressor, evaporator, or condenser issue
- Problem with door seal or gasket
- What to do when temperatures rise in a refrigerator
- Warm or high temperatures reported in refrigerator section
- Why is the refrigerator not cooling or will not 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
- Refrigerator stopped working
Steps to Verify Issue:
Only a Factory Certified Service technician can determine the exact cause of a cooling issue.
For any warm temperatures in a Sub-Zero refrigerator:
- Verify the unit is on and running for at least 24 hours. If not, wait 24 hours for unit to cool properly.
- Check the setpoint temperatures for the compartment. See Refrigerator and Freezer Temperature Settings.
- On an electronic control panel, 38°F is the factory setting.
- For a dial control, set the dial between 4 and 6. 1 is warmest, and 10 is coldest.
- Verify the door closes and was not left ajar for a long time. Turn the door ajar alarm on if it is not on to make sure the door is closing all the way. See How to Turn on a Door Ajar Alarm for instructions.
- Correct or remove anything blocking the door from closing.
- New groceries or warm food will raise temperatures for a time. Temperatures should return to normal after several hours.
- Clean the Condenser if not done in the last 6 months.
- Verify the unit is not in Showroom mode. This is only likely if unit was a product on display in a dealer showroom. See Sub-Zero Showroom Mode Guide for instructions.
- If temperatures do not appear, or the control panel does not respond, verify the unit is not in Sabbath mode. See Sub-Zero Sabbath Mode for instructions.
- If the lights are off and there is no cooling in the refrigerator but the freezer is working normally, make sure the refrigerator was not disabled. Refer to Sub-Zero Control Displays Double Dashes for more information.
- Verify if only one or all sections are not cooling. This information is helpful if service is necessary.
- Wait 24 hours for the unit to return to normal temperatures after correcting any or all of the above.
- If the refrigerator is still warm after these steps are complete, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.
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