BoilerFaultCodesYour boiler is attempting to restart its ignition process because it failed to light or maintain a flame.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: restart ignition
What causes this fault?
This fault occurs when the boiler's control system senses that a flame has not been successfully established or maintained after several attempts. The most common reasons are a lack of gas reaching the burner, worn-out spark electrodes that can no longer ignite the fuel, or a faulty sensor that fails to 'see' the flame even when it is lit.
This fault can be more common during extreme cold snaps if the external gas regulator or meter freezes, restricting the flow of gas to the appliance.
DIY fix possible
Check if your gas supply is turned on and other gas appliances are workingPress the reset button or turn the selector switch to 'OFF/RESET' for several secondsEnsure the condensate pipe (the white plastic pipe outside) isn't frozen if it is winter
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 12 — no call-out fees, no surprises.
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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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