BoilerFaultCodesYour boiler has stopped working because it has detected an electrical issue with the internal gas valve or its wiring.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: The gas valve is switched
What causes this fault?
This fault occurs when the boiler's control board detects that the gas valve is in the wrong position or receiving an incorrect electrical signal. It is usually caused by a physical failure within the valve's internal motor or a communication break in the wiring connecting it to the main computer. In some cases, the control board itself may be sending incorrect voltages, preventing the valve from opening safely to light the burner.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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