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Sub-Zero Refrigerator and Freezer Temperature Settings


General Temperature Setting Information

To change the units from Celsius to Fahrenheit or vice versa, see also:

Set Dial Controls

See How to Set a Dial Control Refrigerator or Freezer for instructions and recommendations.

For series-specific instructions, see:

Electronic Control Panel Display Temperature Ranges

The temperature range in a Sub-Zero with an electronic control panel can vary depending on model.

  • Classic (CL) and Designer (DET, DEC) products have a range of 34° - 42°F (1° - 6°C) in the refrigerator and -5° to 5°F (-20° to -15°C) in the freezer.
  • Classic (BI) and Designer (IT, IC, ID) products have a range of 34° - 45°F (1° - 7°C) in the refrigerator and -5° to 5°F (-20° to -15°C) in the freezer.
  • In units with an electronic control panel, the factory settings of 38°F (3°C) in a refrigerator and 0°F (-18°C) in a freezer are ideal food storage temperatures.
  • Wine Storage products have different temperature ranges to preserve wine, see Wine Storage Temperature Ranges.
  • The Designer Undercounter Beverage Center has different temperature ranges for a variety of beverages, see Designer Undercounter Beverage Center (DEU2450BG) Temperature Ranges.
  • Setting the temperature higher or lower than factory settings causes the unit to run more or less, according to set temperature.
  • It is not possible to set a temperature higher or lower than the range listed above.
  • If the control panel does not respond, refer to Sub-Zero Electronic Control Panel Non-Responsive for troubleshooting steps.

Adjust the Temperature

The steps to adjust the temperature vary depending on the product family.

400, 600, 700, Classic (BI), UC Undercounter, UW and BW Wine Storage, and 648PRO

  1. Press the colder or warmer key for the desired refrigerator or freezer section.
    • Unit normally shows the actual temperature.
    • When the colder or warmer key is pressed, unit will show the set temperature.
  2. After setting to desired temperature, display will return to actual temperature after 3 seconds.
  3. The temperature change is not immediate. Allow 24 hours for the unit to reach the set temperature. An audible beep occurs during this operation.

Classic (BI) Control Panel:

UC Undercounter Control Panel:

UW and BW Wine Storage Control Panel:

648PRO Controls and Display:

PRO3650 and PRO4850

  1. To adjust the temperature, touch the temperature shown next to the corresponding zone icon.

PRO3650 Control Panel:

Designer (IT, IC, ID) Refrigeration and Designer Wine Storage (IW)

  1. Touch the temperature to adjust.
  2. Touch + to increase or - to decrease the temperature until the desired temperature displays. The product saves the settings after the controls are not touched for 3 seconds.

Designer Control Panel:

Additional Resources

Unit Information


Refer to the product Use and Care Guide for further information.

If these troubleshooting steps do not resolve the issue, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.


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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