U4-67 High
Your boiler has experienced a communication error that has stopped it from working, and it requires a manual power reset to clear the internal memory.
Technical description: Remote reset supervision, switch off the power at the mains – if problem repeats Contact a heating engineer
Typical repair cost: £100-250 (including labour)
DIY fix possible
Locate the fused spur switch or main power switch for the boilerTurn the power 'Off' and wait for at least 30 secondsTurn the power back 'On' and wait for the boiler to restart
Protect yourself from future repair bills
A boiler cover plan would cover faults like U4-67 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Wiring connection harness
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