BoilerFaultCodesYour boiler has detected that gas is continuing to flow when it should have stopped, which is a significant safety concern.
Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now — this fault can be dangerous if ignored.
Technical description: GAS LEAK THROUGH THE SAFETY ELECTRIC VALVES: CHECK THE SAFETY ELECTRIC VALVE
What causes this fault?
This fault occurs when the boiler's internal sensors detect that gas is still passing into the burner even after the system has commanded the flow to stop. The most common reason is that the seals inside the gas valve have become stuck or damaged, preventing it from closing fully, though a communication error from the main control board can also trigger this warning.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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