F50
Miele
Motor Drive Fault (Accessory Motor)
Microwave shows F50 and will not start; may be associated with motorized features (e.g., motorized door or panel).
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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
Stalled accessory motor, Jammed mechanism, Failed motor drive circuit on control board, Broken gear or linkage
How to Fix / Troubleshooting
Safety first: Unplug the microwave before working on moving mechanisms.
- Identify motorized feature: Determine which feature uses a motor (e.g., motorized door, panel, or vent). Observe whether it moves correctly at startup.
- Check for obstructions: Remove any objects that may block the moving part. Do not force the mechanism.
- Inspect mechanism (advanced): Remove covers to access the motor and linkage. Look for broken gears, bent arms, or foreign objects.
- Test motor: Check motor windings for continuity and inspect wiring.
- Replace motor or repair linkage: Replace any failed motor or damaged mechanical parts. If the motor is good but not powered, the drive circuit on the control board may be defective and require professional repair.
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Repair Difficulty
Hard
4/5
Required Part
Accessory Drive Motor / Mechanism
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