Westinghouse Cooling Fan Imbalance / Wear

Microwave fan runs loudly or vibrates excessively during operation.

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.

Possible Causes

Debris caught in fan blades,Worn fan motor bearings,Loose fan mounting screws,Bent fan blade

How to Fix / Troubleshooting

Safety first: Unplug the microwave before accessing the fan.

User-level steps:

1. Determine fan type: On countertop models, this is usually the internal cooling fan; on over-the-range models, it may be the exhaust fan.
2. Clean filters: For over-the-range units, remove and clean grease filters to improve airflow.

Advanced steps:

3. Access fan: Remove the outer cover or top grille to reach the fan assembly.
4. Remove debris: Clear any obstructions from the blades and housing.
5. Tighten mounts: Ensure the fan motor and housing are securely fastened.
6. Replace motor: If the motor is noisy due to worn bearings, replace the cooling fan motor.

Repair Difficulty

Medium 3/5

Required Part

Cooling Fan Motor

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