FA 306 Emergency
Your boiler detects a flame signal even though it has commanded the burner to turn off, which may be due to a faulty sensor or a sticking gas valve.
Technical description: An ionisation current was measured after the burner went out
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 FA 306 — no call-out fees, no surprises.
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Parts commonly replaced
- Ionisation Electrode
- Gas Valve
- PCB (Control Board)
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