BoilerFaultCodesYour boiler thinks it sees a flame before it has even started the ignition process, which is a safety conflict that prevents it from running.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flame On Before Gas Valve On
What causes this fault?
This fault occurs when the boiler's internal sensors detect a flame signal even though the gas valve hasn't been told to open yet. The most common reasons are a damaged flame sensing electrode that is sending a false signal, a gas valve that is leaking slightly, or a glitch in the main circuit board's electrical logic.
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?
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