BoilerFaultCodesYour boiler is receiving power but has failed to start up because of an internal electrical or mechanical fault that is preventing it from responding to any requests for 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: Boiler not operating during any demand
What causes this fault?
This fault occurs when the boiler's internal computer is receiving power but fails to initiate the sequence required to start the burner. It is most commonly caused by a communication breakdown between the electronic control board and a vital safety component like the fan or air pressure switch. Because the boiler cannot confirm it is safe to light, it remains in a dormant state and fails to respond to any commands.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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