Your boiler is still detecting a flame even though it has tried to shut off the gas supply, 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 signal after closing the fuel supply
What causes this fault?
This fault occurs when the boiler's internal sensor detects a flame or an electrical current that looks like a flame even after the gas has been told to turn off. The most common reason is a gas valve that hasn't fully closed or an ignition 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.
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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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