BoilerFaultCodesYour boiler has tried to start up but cannot detect a flame, meaning it cannot provide heating 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: No flame signal following starting procedure
What causes this fault?
This fault occurs when the boiler's control system fails to detect a flame after several attempts to ignite the gas. It is usually caused by a lack of spark, a blocked gas supply, or a dirty sensor that cannot 'see' the flame even if it has successfully lit. Over time, soot buildup or wear on the internal ignition parts prevents the boiler from firing up safely.
This fault is more frequent during the first cold snap of winter when the gas valve may stick after sitting idle or when extreme cold affects the external gas supply pressure.
DIY fix possible
Check if other gas appliances (like a hob) are working to ensure gas is reaching the propertyCheck that your prepaid gas meter has creditTry resetting the boiler using the reset button on the touchscreen
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 2950 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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