F50
Miele
Drive Motor Fault
Drum does not turn, or turns briefly then stops with motor error
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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
Worn carbon brushes on Miele motor (if brush motor), Defective motor tachogenerator, Open motor winding, Faulty motor control triac or relay on control board
How to Fix / Troubleshooting
Safety first: Disconnect power. The drum and motor can move unexpectedly; keep hands clear when testing.
- Check drum movement: Rotate the drum by hand. It should turn smoothly without grinding or binding.
- Access motor: Remove the rear panel to access the drive motor under the tub. Inspect the drive belt for breakage or slipping.
- Inspect brushes (if fitted): On brush-type motors, remove the brush holders and check brush length. Replace if worn below manufacturer limits.
- Check tachogenerator: Ensure the tachogenerator on the motor shaft is firmly attached and its wiring is intact.
- Advanced testing: Measure motor winding resistance and insulation. If the motor is defective, replace it with the correct Miele motor assembly. If the motor tests good, the control board's motor drive circuit may be faulty and requires professional repair.
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Repair Difficulty
Professional Required
5/5
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