07, 09 High
Your boiler has detected a sequence error or a flame signal where there shouldn't be one, causing the burner to shut down completely for safety.
Technical description: Burner control switches to lockout
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 07, 09 — no call-out fees, no surprises.
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Parts commonly replaced
- Ionisation electrode
- Ignition cable
- Burner control unit (PCB)
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