Bertazzoni
Ventilation Fan / Blower Fault
Over-the-range Bertazzoni microwave exhaust fan does not run or runs only at 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 exhaust fan motor, Faulty fan speed switch or relay, Obstructed blower wheel, Loose wiring to fan
How to Fix / Troubleshooting
Safety first: Disconnect power before servicing the exhaust fan.
- Step 1 – Check fan settings: Verify that the fan is not set to off or auto modes that may delay operation.
- Step 2 – Inspect filters: Remove and clean grease filters; heavy grease can strain the fan.
- Step 3 – Access blower: Remove the top or front grille to access the blower assembly. Check for obstructions in the blower wheel.
- Step 4 – Test motor: With power disconnected, test the fan motor windings. Replace the motor if open or seized.
- Step 5 – Control components: If the motor is good, the fan speed switch or control relay may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Exhaust Fan Motor
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