Boiler display backlight works but text is missing, garbled, or unreadable.
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.
Possible Causes
How to Fix / Troubleshooting
Safety: Turn off power before removing the front panel and accessing the display.
- Check connections: Reseat the ribbon cable or connector between the main control board and the display module.
- Inspect for damage: Look for signs of moisture, corrosion, or burn marks on the display PCB.
If the display remains unreadable, the display module or main control board may need replacement by a technician. Do not operate the boiler without a functional display, as you cannot see error codes or settings.
Repair Difficulty
Required Part
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