Topics:

• Refrigerator or freezer fan does not work
• How to replace fan switch
• What does the fan switch do?
• Does my unit have two fan switches?
• What does the switch next to the fan switch do?

Troubleshooting:

1. Verify the unit is cooling properly.
2. If the fan does not come on when the fan switch is pressed for several minutes, it may be faulty.
   • The light and fan switches are mounted to the top mainframe. The light switch is on the left, and the fan switch is on the right.
   • The fan and light switches have separate part numbers.
   • The fan switch controls the evaporator fan.
   • The fan switch function is the opposite of the light switch. It turns on when the door is closed, instead of off.
   • If a light switch is installed in the fan switch location, poor temperatures will result.
   • If the fan switch is not working, symptoms may include temperature issues (bottom is cold, top is warm).
   • If the lights are out inside a refrigeration unit, see Refrigerator or Freezer Light Switch Information.
   • It is not necessary to replace the fan switch if the light switch needs replacing.
3. Fan and light switches are replaced the same way. However, diagnosing a fan switch as the only issue with a product is difficult, and Factory Certified Service is suggested to make sure the unit continues to cool properly.
4. See also:
   • Refrigerator or Freezer Drawer Light Switch Replacement
   • Warm Refrigerator or Freezer Troubleshooting
   • Sub-Zero Runs Too Much

Contact a Factory Certified Parts Distributor to order parts.

Answer:

Refer to the documents below for instructions to replace fan switches.

• 501 and 601 Series Grille Removal
• Refrigerator or Freezer Light Switch Information
• How to Use the Sub-Zero Air Purification System