BoilerFaultCodesTechnical description
No gas supply.
What causes this fault?
This fault occurs when the boiler's internal safety sensors detect that a flame hasn't been established after several attempts to light. The most common reasons are a lack of gas reaching the unit, a faulty component failing to create a spark, or the gas valve not opening correctly to allow fuel into the burner.
This issue can occur in winter if the external gas meter regulator freezes, restricting the flow of gas to the boiler during periods of high demand.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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