BoilerFaultCodesYour boiler is unable to safely control the flow of gas needed to stay alight, so it has shut down as a safety precaution.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Diagnostics indicate failure of gas valve 1 or 2, or a specific solenoid in a double solenoid gas line.
What causes this fault?
This fault occurs when the boiler's internal computer detects that the electronic valves responsible for letting gas into the burner are not opening or closing correctly. The most common reason is that the mechanical seals inside the valve have become stuck or the electrical coils that trigger them have burnt out, preventing the boiler from lighting safely.
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.
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