E12
Grundig
User Interface / Keypad Communication Fault
E12 is displayed and the machine does not respond to button presses or touch controls intermittently.
Advertisements
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.
Advertisements
Possible Causes
Loose ribbon cable between control board and display, Moisture ingress behind control panel, Faulty touch sensor PCB, Firmware communication error
How to Fix / Troubleshooting
Safety first: Unplug the coffee maker before touching the control panel or opening the housing.
- Dry the panel: If the panel has been exposed to steam or cleaning liquids, leave the machine unplugged for several hours to allow moisture to evaporate.
- Avoid harsh cleaners: Clean the control panel only with a slightly damp soft cloth. Do not spray cleaner directly onto the panel.
- Power reset: After drying, plug in the machine and perform a power cycle. Check if the buttons respond normally.
- Service if persistent: If E12 continues or some buttons never respond, the user interface PCB or ribbon cable may be damaged and should be replaced.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
User Interface / Touch Control PCB
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements