Paderno Cooling or Exhaust Fan Imbalance

Microwave fan is very loud or rattles during operation, even when not heating heavily.

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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

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

How to Fix / Troubleshooting

Safety first: Unplug the microwave before accessing the fan area.

Step-by-step checks:

  • 1. Identify which fan: Over-the-range models have both cooling and exhaust fans. Test in cook mode and in hood-only mode to see which is noisy.
  • 2. Access fan: Remove the top grille or outer cover to reach the fan assembly.
  • 3. Clean blades: Remove dust, grease, or foreign objects from the blades.
  • 4. Tighten mounts: Check and tighten any loose screws or brackets.
  • 5. Replace motor: If the motor shaft has play or grinding noise persists, replace the fan motor.
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Repair Difficulty

Medium 3/5

Required Part

Cooling Fan Motor
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