FA 306 High
Your boiler thinks it can still see a fire inside even though it has commanded the burner to turn off.
Technical description: False flame fault – flame detected after burner stop
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 FA 306 — no call-out fees, no surprises.
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Parts commonly replaced
- Ionisation Probe
- Gas Valve
- Printed Circuit Board (PCB)
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