BoilerFaultCodesYour boiler is still detecting a flame even though it has tried to turn the gas supply off, which is a safety conflict.
Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now — this fault can be dangerous if ignored.
Technical description: Flame detected after gas has been shut off.
What causes this fault?
This fault occurs when the boiler's internal sensors continue to detect a flame even after the system has instructed the gas to stop flowing. The most common reasons are a sticking gas valve that hasn't fully closed or a faulty detection electrode that is sending a false signal back to the main control board.
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 FA — no call-out fees, no surprises.
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