E20
Rosières
General Communication / Internal Error
E20 displayed; dishwasher may not respond to buttons or may freeze mid-cycle
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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
Communication failure between main PCB and peripheral boards, Software glitch, Faulty wiring harness, Defective control board
How to Fix / Troubleshooting
Safety first: Unplug the appliance before any disassembly.
- Hard reset: Disconnect power for 10–15 minutes, then reconnect and attempt to start a simple program.
- Inspect harnesses: Check all visible wiring harnesses between the main PCB, door UI, and base components for damage or loose connectors.
- Moisture check: Ensure there is no condensation or water on the control boards or connectors.
- Service diagnostics: Some Rosières models allow entry into a diagnostic mode to further pinpoint the fault; this is typically for technicians.
- Board replacement: If E20 persists and wiring is intact, the main control board may require replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (PCB)
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