BoilerFaultCodesYour boiler's computer brain has encountered a serious internal error and cannot safely light the burner to provide heat or hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Faulty burner/Ignition control (Internal error)
What causes this fault?
This fault occurs when the boiler's internal computer system fails to communicate correctly with the ignition components. It is usually caused by a physical failure within the main circuit board or the transformer that creates the spark. Because the boiler cannot verify that it is safe to light the gas, it shuts down completely as a protective measure.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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