F30
Miele
Internal Overtemperature / Cooling System Fault
Microwave displays F30 and may shut down during operation.
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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
Blocked internal cooling channels, Failed internal cooling fan, Excessive ambient temperature around unit, Faulty overtemperature sensor
How to Fix / Troubleshooting
Safety first: Turn off power and allow the unit to cool completely before inspection.
- Check installation: Verify that the microwave has the required clearances and that cabinet cutouts match Miele specifications.
- Clean vents: Remove dust and lint from intake and exhaust vents using a vacuum and soft brush.
- Verify fan operation: During a test run, listen for internal fans. If fans do not run, stop the unit and disconnect power.
- Inspect fans (advanced): Remove covers to access internal fans. Check for obstructions and test motors for continuity.
- Replace faulty components: Replace any failed fan motors or overtemperature sensors. Persistent F30 errors may indicate a control board fault requiring professional service.
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Repair Difficulty
Hard
4/5
Required Part
Internal Cooling Fan Assembly
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