Junkers Keypad / user interface failure

Boiler display works but no response to any buttons

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.

Possible Causes

Faulty control panel membrane, Loose ribbon cable, Locked control panel (child lock), Defective display PCB

Safety: No immediate hazard, but you cannot change settings or reset faults.

Check for lock function: Consult the Junkers manual to see if a child lock or panel lock is active and how to disable it.
Power cycle: Turn the boiler off and on to see if the panel becomes responsive.
Inspect connections (technician):
- Isolate power and remove the front cover.
- Check the ribbon cable between the display panel and main PCB; reseat if loose.
- Replace the display/control panel if the membrane is unresponsive.

Medium 3/5

User Interface / Display PCB

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