Worcester Bosch User Interface Failure

Boiler display is on but completely blank or unreadable, controls unresponsive.

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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

Failed display PCB, Loose ribbon cable, Moisture ingress into control panel

How to Fix / Troubleshooting

Safety first: Isolate power before removing the control fascia.

Engineer actions:

  • Remove the front panel and inspect the user interface PCB and ribbon cable for damage or moisture.
  • Dry any moisture and correct the source of ingress (e.g., leaking auto air vent or pipework).
  • Reseat or replace the ribbon cable if damaged.
  • Replace the user interface PCB if the display remains blank or controls are unresponsive.
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Repair Difficulty

Medium 3/5

Required Part

User Interface PCB
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