Connection High
Your boiler’s internal computer and the display screen are having trouble talking to each other, which means the boiler cannot receive commands to turn on.
Technical description: No communication between the printed circuit board (PCB) and the user interface
Typical repair cost: £180-450 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like Connection — no call-out fees, no surprises.
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Parts commonly replaced
- Main Printed Circuit Board (PCB)
- User Interface/Display Board
- Internal Wiring Harness
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