Café
Ventilation Fan Motor / Control Failure
Over-the-range Café microwave vent fan does not run or only runs on one speed when commanded.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed vent fan motor, Stuck fan blade, Faulty fan speed relay on control board, Loose wiring to fan motor
How to Fix / Troubleshooting
Safety first: Unplug the microwave or turn off the breaker.
Steps to try:
- Check fan settings: Verify you are pressing the correct vent fan speed buttons and that the display indicates the selected speed.
- Inspect filters: Remove and clean grease filters; replace charcoal filter if clogged.
- Listen for hum: When the fan is commanded on, listen for a humming sound. A hum without airflow may indicate a stuck or failing motor.
- Service: A technician should access the vent fan assembly, check for obstructions, test the motor windings, and verify the control board fan relays.
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Repair Difficulty
Hard
4/5
Required Part
Vent Fan Motor
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