Your boiler is still sensing a flame even though it has tried to turn the gas off, which is a safety conflict that requires a professional inspection.
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 sensors continue to detect heat or a flame signal even after the burner should have shut down. The most common reasons are a gas valve that is failing to close fully, or a faulty sensor that is incorrectly reporting a flame to the 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.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like FA — no call-out fees, no surprises.
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Worcester Bosch RD 532 Combi 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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