F91
Miele Drying Fan Fault

F91 displayed; drying performance may be poor and fan may not run.

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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

Defective drying fan motor, Blocked air duct, Wiring fault to fan, Fan impeller jammed by debris

How to Fix / Troubleshooting

Safety: Unplug the dishwasher. Drying components may be hot after a cycle.

  • Check vents: Inspect the interior air outlet and external vent (if present) for blockages.
  • Access fan: Remove the side or top panel to reach the drying fan assembly.
  • Inspect impeller: Ensure the fan spins freely by hand and is not obstructed.
  • Electrical test: Measure fan motor resistance and check wiring. Replace the fan assembly if the motor is open or seized.
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Repair Difficulty

Hard 4/5

Required Part

Drying Fan Assembly
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