E11
De Dietrich
Control Board Communication Fault
Display shows communication error between user interface and main board
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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 communication cable between De Dietrich display and main PCB, Faulty user interface board, Faulty main control board, Electrical interference or surge damage
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing electronic components.
Step-by-step checks:
- Power reset: Turn off the unit for at least 1 minute, then restore power.
- Check low-voltage harness: Remove the front panel and locate the communication cable between the display module and main PCB. Reseat both ends carefully.
- Inspect for moisture: Look for signs of condensation or water ingress on the electronics. If present, the source of the leak must be corrected.
When to call a professional: Board-level diagnosis and replacement should be done by an authorized service technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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