AEG
User Interface / Start Inhibit Fault
Machine powers on but will not start brewing; pressing any coffee button does nothing.
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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
Active safety interlock (door open, tray missing), Faulty keypad or touch panel, Stuck button, Firmware lock due to pending descaling or error
How to Fix / Troubleshooting
Safety: Disconnect from mains before removing panels.
- Check interlocks: Ensure the service door, drip tray, and water tank are correctly installed. Remove and reinsert each component.
- Clear messages: Look for messages such as “Empty tray”, “Fill water”, or “Descale”. Perform the requested action and confirm.
- Panel test: Press each button individually and observe if any respond. If some buttons never respond, the keypad or touch panel may be faulty.
- Power reset: Unplug for 10 minutes to clear any software lock. If still unresponsive, the user interface PCB may require replacement.
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Repair Difficulty
Medium
3/5
Required Part
User Interface Panel
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