Avanti
Ventilation Fan Failure (OTR Models)
Over-the-range Avanti microwave vent fan does not run or only runs on one speed.
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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, Faulty fan speed switch or relay, Obstructed fan blades, Loose wiring to fan motor
How to Fix / Troubleshooting
Safety: Unplug the microwave or switch off the circuit breaker before servicing the fan.
Steps:
- 1. Check fan settings: Verify that the fan is not set to OFF and that speed settings are correctly selected.
- 2. Inspect filters and airflow: Remove and clean grease filters. Ensure nothing is blocking the intake or exhaust.
- 3. Access fan motor: Remove the top grille and, if necessary, lower the microwave to access the fan assembly. Check that the fan blades spin freely and are not obstructed.
- 4. Test motor: With a multimeter, test the fan motor for continuity. Replace the motor if open or seized.
- 5. Check wiring and relays: Inspect wiring to the fan and the control board relays. Repair or replace as needed.
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Repair Difficulty
Hard
4/5
Required Part
Vent Fan Motor
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