BoilerFaultCodesYour boiler thinks a flame is still present even though the gas should have been turned off, which is a safety concern that prevents it from running.
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 shut off.
What causes this fault?
This fault occurs when the boiler's internal sensor continues to detect a flame even after the system has commanded the gas supply to close. The most common reason is a gas valve that is physically stuck open or leaking, though it can also be caused by a sensing electrode or control board incorrectly reporting fire when none exists.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like FA — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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