Bush Cooling Fan Motor Wear or Obstruction

Microwave fan runs loudly or squeals during operation.

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

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

Safety: Unplug the microwave before accessing the fan.

Access fan: Remove the outer cover. The cooling fan is usually near the magnetron or at the rear/top of the unit.
Inspect blades: Remove any dust, grease, or debris from the fan blades. Straighten any bent blades carefully.
Check mounting: Tighten any loose screws or brackets holding the fan motor.
Replace motor: If the fan still squeals or feels rough when spun by hand, replace the fan motor assembly.

Medium 3/5

Cooling Fan Motor

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