F.67 High
Your boiler's main control board has detected a communication error with its flame sensing system, meaning it cannot safely confirm if the gas is lit.
Technical description: Electronic fault in the flame system
Typical repair cost: £280-450 (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 F.67 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Ignition Electrode
- Flame Sensing Electrode
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