Possible Causes

Defective evaporator fan motor, Ice blocking fan blades, Damaged fan wiring harness, Faulty main control board fan driver

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before removing interior panels.

Steps to check:

Access the evaporator fan: Remove shelves and the rear interior panel in the freezer or fresh food compartment (depending on model) to expose the fan.
Check for ice blockage: Look for heavy frost or ice around the fan shroud. If present, defrost the area with a hair dryer on low, keeping it moving to avoid melting plastic.
Spin test: Gently spin the fan blades by hand. If they do not move freely, the motor may be failing and should be replaced.
Electrical test: After reapplying power and closing the door switch (use tape to hold it closed), check if the fan receives voltage. If voltage is present but the fan does not run, replace the evaporator fan motor.

Note: If the fan never receives power, the main control board or door switch circuit may be defective and requires professional diagnosis.