BoilerFaultCodesYour boiler has tried to start up but cannot light the gas flame, which means your heating and hot water will not work.
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 light a flame but fails to detect one after several attempts. The most common reasons include a lack of gas reaching the burner, a worn-out spark electrode that cannot create a spark, or a faulty internal component failing to signal that the gas is lit.
This fault is more common during extreme cold spells, as external gas meters can sometimes freeze or the gas pressure in the street can drop, preventing the boiler from receiving enough fuel to ignite.
DIY fix possible
Check that your gas pre-payment meter has creditEnsure the gas stopcock is fully open and other gas appliances like the hob are workingPress and hold the reset button for five seconds
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 E01 — no call-out fees, no surprises.
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Ideal Mini HE is discontinued — time for a new one?
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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