F41
Miele
Internal Communication Timeout
Microwave displays F41 and may intermittently shut off or reboot.
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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
Loose internal connectors, Oxidized board-to-board connectors, Electrical interference from nearby devices, Failing control board
How to Fix / Troubleshooting
Safety first: Disconnect power before opening the unit.
- Relocate interference sources: Move high-power RF devices (Wi-Fi routers, cordless phone bases) away from the microwave if they are very close.
- Inspect connectors (advanced): Remove covers and gently reseat all multi-pin connectors between boards.
- Check for corrosion: Look for signs of moisture or corrosion on connectors and PCBs. Address any moisture sources.
- Board replacement: If F41 continues after reseating connectors, one of the control boards may be failing and should be replaced by a professional.
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Repair Difficulty
Hard
4/5
Required Part
Internal Board-to-Board Connectors
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