BoilerFaultCodesYour boiler has tried to start several times but cannot light the gas to begin heating.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Too many failed ignitions
What causes this fault?
This fault occurs when the boiler's control system attempts to light the burner several times but fails to detect a stable flame. The most common reasons are a lack of gas reaching the unit, worn-out spark electrodes that can no longer create a light, or a dirty sensor that cannot 'see' the flame even if it has ignited.
This fault is more common during the first cold snap of winter, as debris in the gas line or moisture on the electrodes can prevent ignition after the boiler has been inactive over summer.
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionIf you have a pre-payment meter, check that you have sufficient creditPress the reset button or turn the selector switch to 'OFF/RESET' for 5 seconds and then back to 'ON'
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A boiler cover plan would cover faults like A02 — 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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