E17
Bomann
Communication Error Between Main Board and Display Board
Oven shows E17 and cannot communicate with display or timer module
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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 or damaged communication ribbon cable, Oxidized connectors, Faulty display PCB, Faulty main control board communication circuit
How to Fix / Troubleshooting
Safety: Disconnect power.
Check communication link:
- Remove the front control panel to access the display/timer PCB and the ribbon cable to the main control board.
- Inspect the cable for kinks, cuts, or burn marks. Replace if damaged.
- Reseat both ends of the cable, ensuring they are fully inserted and locked.
- If E17 persists, try replacing the display PCB. If that does not resolve it, the main control board is likely faulty.
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Repair Difficulty
Medium
3/5
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