BoilerFaultCodesYour boiler is trying to light but cannot spark or maintain a flame, meaning you have no 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: Ignition failure
What causes this fault?
This fault occurs when the boiler's internal computer tries to start the burner multiple times but cannot detect a successful flame. The most common reason is a problem with the gas supply or a worn-out ignition spark, but it can also be triggered by a build-up of debris on the internal sensors that monitor the fire.
This fault is more common during extreme cold spells, as the external gas regulator or condensate pipe can freeze, preventing the boiler from lighting safely.
DIY fix possible
Check that your gas emergency control valve is in the 'on' position.Verify if other gas appliances, such as a hob, are working to confirm gas supply.If you have a pre-payment meter, ensure you have sufficient credit.Press the 'Reset' button on the boiler control panel for 2 seconds.
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A boiler cover plan would cover faults like E01 — 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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