E18
Siemens
Internal Communication / Display-to-Main PCB Error
Display shows E18; interior light and display may flicker, and the unit may randomly restart.
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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 display ribbon cable, Oxidized connectors between display and main PCB, Faulty display PCB, Faulty main PCB communication driver
How to Fix / Troubleshooting
Safety first: Disconnect mains power before removing the control panel or rear cover.
Steps to address E18:
- Remove control fascia: Carefully access the display PCB at the front.
- Inspect ribbon cable: Ensure the flat cable is fully inserted and not damaged or kinked.
- Clean connectors: Use electronic contact cleaner on the ribbon connectors and reseat them.
- Check rear PCB connector: At the main PCB, verify that the display cable is secure.
- Replace display PCB: If flickering and E18 persist, replace the display/control PCB. If still unresolved, the main PCB may also need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Display PCB / Ribbon Cable
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