BoilerFaultCodesYour boiler has tried to light several times but cannot establish a flame, meaning it has shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition Lockout
What causes this fault?
This fault occurs when the boiler's control system attempts to start the burner multiple times but fail to detect a stable flame. The most common reasons are a lack of gas supply reaching the unit, a blocked burner, or a faulty component that is unable to generate the spark required to ignite the gas.
This fault is more common in winter, as sub-zero temperatures can cause the external condensate pipe to freeze, creating a blockage that prevents the boiler from lighting.
DIY fix possible
Check if other gas appliances, like a hob, are working to ensure gas is reaching the propertyCheck if your gas meter credit has run outIf it is freezing outside, check if the white plastic condensate pipe leading outdoors is frozenPress the Reset button on the front of the boiler
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like L2 — 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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