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Sub-Zero Refrigerator or Freezer Light Switch Replacement


  • Refrigerator or freezer lights do not work
  • Lights will not turn on
  • Light terminator shut lights off
  • Lights only work if light switch is wiggled, flicked, moved
  • All light bulbs replaced and the lights still do not work
  • How to replace light switch, part number 7014646, 7004257, 7007259
  • Function of the switch next to the light switch
  • How many light switches are in the unit?



For initial troubleshooting before replacing a light switch, refer to:

Sub-Zero Light Switch Replacement

If a light switch needs to be replaced, first determine the model. See also, Sub-Zero Serial Tag Locations.

Designer, PRO, and Undercounter Series Models:

Designer Series, Designer Wine Storage, PRO Series, and Undercounter Series units all require service to replace the light switch. 

Classic, 700, 600, 500, 400, and 200/300 Series Models:

Other models, including Classic (BI) Series units, can sometimes be repaired without a technician.

  • Side-by-Side units have light switches that are easy to replace without a service technician. Refer to the table below for part numbers and instruction sheets.
  • Over/Under unit refrigerator switches are easy to repair. However, the freezer light switch requires service to replace. See also, Over/Under Unit Freezer Light Switch Location.

Part Numbers and Replacement Instructions

Genuine Sub-Zero, Wolf, and Cove parts are available by calling the Factory Certified Parts Distributor in your area.

  • Use Locator to find the Parts Distributor for your area.


Light Switch
Part Number*
Classic (BI) Series7007259Classic Series Light Switch Replacement
Designer Refrigeration (IT, IC, ID) SeriesN/AMust be replaced by FCS
Designer Wine (IW) SeriesN/AMust be replaced by FCS
Professional Refrigeration (PRO 48, PRO 36)N/AMust be replaced by FCS
648PRO Refrigeration SeriesN/AMust be replaced by FCS
UC Undercounter SeriesN/AMust be replaced by FCS
700 Series Upper Cabinet and IC-27 Models7004257700 Series Light Switch Instructions
700 Series DrawersN/AMust be replaced by FCS
600 Series (excluding 601)7014646600 Series Light Switch Instructions and
500 Series (excluding 501)7014646Light Switch Instructions and
501 and 601 Models7004257501 and 601 Models
See also, 501 and 601 Series Grille Removal
424, 427 Models70042577004257 -  Light Switch Instructions
200 / 300 Series7014646


7004257 - Light Switch Instructions

*The part number is the same for both the refrigerator and freezer switches. Contact a Factory Certified Parts Distributor to order parts.

Tips to Replace a Light Switch

  • Light switch instructions do not come with light switches when shipped.
  • Tools required are a Phillips head screw driver, T-20 Torx head screw driver, and pliers.
  • Make sure there is no power to the unit by turning off the circuit breaker.
  • The switch wires may be very tight depending on the age of the unit. Firmly pulling the wires by hand should remove them from the light switch.
    • If necessary, carefully pull at the base of the wire with a needle-nose pliers to remove the wire from the light switch.

500 and 600 Series Models:

If the lights still do not work after replacing the bulbs and the switch, service is needed to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.

Additional Resources:


    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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