E18
De Dietrich
Keypad / Button Matrix Fault
Display shows E18 and the unit may not respond to temperature changes; setpoint cannot be adjusted.
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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
Stuck or shorted button on control panel, Damaged keypad membrane, Contamination under buttons, Faulty UI board
How to Fix / Troubleshooting
Safety: Unplug the appliance before removing the control panel or door trims.
E18 is associated with a fault in the keypad or button matrix on some De Dietrich wine coolers.
- Check for stuck buttons: Gently press each button and ensure it returns fully. Look for physical damage or misalignment.
- Clean the panel: If there are signs of spills, carefully remove the fascia and clean around the buttons with a lightly dampened cloth. Do not allow liquid to enter the electronics.
- Inspect the keypad membrane: Look for cracks, delamination, or corrosion on the flexible keypad.
- Replace UI assembly: If one or more buttons remain unresponsive or E18 persists, replace the entire user interface or keypad assembly with the correct De Dietrich part.
- Reassemble and test: Restore power and verify that all buttons function and that E18 is cleared.
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Repair Difficulty
Medium
3/5
Required Part
Keypad / User Interface Assembly
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