Sub-Zero Refrigerator or Freezer Fan Switch Information
- 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?
- Verify the unit is cooling properly.
- 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.
- 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.
- See also:
Contact a Factory Certified Parts Distributor to order parts.
Refer to the documents below for instructions to replace fan switches.
|200/300 Series*||7014651||Switch Instructions|
|500 Series**||7014651||Switch Instructions|
|600 Series||7014651||Switch Instructions|
|501 and 601 Fan Switch||7004259||Switch Instructions|
|700 Series Upper Section||7004259||Switch Instructions|
|Model 424||7004259||Switch Instructions|
|Model 427||7004259||Switch Instructions|
|BI Series Light Switch||7007259||Switch Instructions|
*Prior to serial number M393733/P397233, use 4200340.
**Model 550 - Prior to serial number M702716/P700765, except between M681166 - M681565, use 7004259.
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