8 High
Your boiler is struggling to detect the flame it needs to stay lit, which means it is shutting down for safety.
Technical description: Flame circuit error
Typical repair cost: £120-£350 (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 8 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame rectification probe
- Ignition electrode
- Printed Circuit Board (PCB)
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