BoilerFaultCodesYour boiler has tried to start up but cannot light the gas to create 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: Ignition failure
What causes this fault?
This fault occurs when the boiler's control system attempts to start the combustion process but fails to detect a flame after several attempts. It is usually caused by a lack of gas supply, a worn-out ignition spark electrode that can no longer create a spark, or a faulty gas valve that isn't opening correctly.
While this can happen year-round, it often occurs during the first cold snap of winter when the gas valve may stick after being dormant during the summer months.
DIY fix possible
Check that your gas supply is turned on at the meter.If you have a prepaid gas meter, check that you have remaining credit.Press the Reset button for two seconds to see if the boiler restarts.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like E01 — 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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