Buderus
Display / User Interface Fault
Boiler display is dim, flickering, or unreadable
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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
Aging LCD or LED display, Loose ribbon cable between display and control board, Low supply voltage to display module, Faulty user interface PCB
How to Fix / Troubleshooting
Safety: Isolate power before removing the front panel or control fascia.
- 1. Power cycle: Turn the boiler off and on to see if the display recovers temporarily.
- 2. Check for moisture: Look for signs of condensation or water ingress around the display area; dry carefully if present and address any leaks.
- 3. Ribbon cable: Remove the control fascia and reseat the ribbon cable or plug-in connector between the display and main board.
- 4. Replace UI module: If the display remains unreadable, the user interface PCB or display module may need replacement with the correct Buderus part.
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Repair Difficulty
Medium
3/5
Required Part
User Interface / Display PCB
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