BoilerFaultCodesYour boiler is failing to light the gas to create a flame, meaning you have no heating or hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition fault - No flame detection during ignition attempt
What causes this fault?
This fault occurs when the boiler tries to start up but cannot successfully light the gas or detect that a flame is present. The most common reasons include a worn-out ignition spark, a faulty gas valve that isn't opening properly, or an issue with the main control board failing to send the right signals.
DIY fix possible
Check if your gas supply is active by testing other gas appliances like a hob.Check if your gas meter has credit (if using a pre-payment meter).Press the reset button (indicated by a flame with a line through it) 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 F01 — no call-out fees, no surprises.
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Glow-worm 30ci 30si 35ci 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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