BoilerFaultCodesYour boiler thinks it can still see a fire inside even though it has commanded the burner to turn off.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: False flame fault – flame detected after burner stop
What causes this fault?
This fault occurs when the boiler's sensors continue to detect a flame even after the gas supply should have been cut off. The most common reasons are a faulty sensor sending an incorrect signal, a gas valve that is physically stuck open, or a damaged control board that is misinterpreting electrical signals.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like FA306 — no call-out fees, no surprises.
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Worcester Bosch Greenstar Si Combi / i System is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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