BoilerFaultCodesYour boiler has detected that a gas valve inside the unit is not closing properly, preventing it from safely starting the ignition process.
Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now — this fault can be dangerous if ignored.
Technical description: Valve leakage failure
What causes this fault?
This fault occurs when the boiler's safety system detects gas passing through the internal valves when they should be tightly shut. The most common reason is that small pieces of debris or wear and tear have prevented a valve from seating correctly, or the electronic sensor responsible for checking the seal has failed. Because the boiler cannot guarantee it can stop the flow of gas, it shuts down immediately to ensure your safety.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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