BoilerFaultCodesYour boiler is still detecting a flame even after it has been told to shut down, which indicates a potential safety issue with the gas supply inside the unit.
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 – the gas valve needs checking – hire a Gas Safe installer.
What causes this fault?
This fault occurs when the boiler's internal sensors continue to detect a flame even though the system has commanded the gas supply to stop. The most common reason is a gas valve that hasn't closed fully or a faulty sensor sending an incorrect signal 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.
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 CDi Classic 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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