Microwave displays E09 and the exhaust fan on an over-the-range unit does not operate
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
How to Fix / Troubleshooting
Safety: Unplug the microwave and, if over-the-range, consider having a helper support the unit if you need to lower it.
Basic checks:
- Remove the grease filters and inspect the exhaust fan area for heavy grease buildup or foreign objects.
- Try switching the fan between low, medium, and high speeds to see if any setting works.
Mechanical inspection:
- Access the exhaust fan motor (usually from the top or rear of the unit).
- Check that the fan blade or blower wheel spins freely by hand and is not rubbing against the housing.
- Inspect the wiring harness to the fan motor for loose or burned connectors.
- Test the fan motor windings for continuity. Replace the motor if open or seized.
If the motor and wiring are good, the fan relay or control board may be defective and require replacement.
Repair Difficulty
Required Part
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