BoilerFaultCodesYour boiler is struggling to light the burner properly, which is preventing it from heating your water and radiators.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: ignition
What causes this fault?
This fault occurs when the boiler's control board sends a signal to start the heating process, but it fails to detect a successful flame within the required timeframe. The most common reasons are a worn-out spark electrode that can no longer ignite the gas, or a faulty gas valve that isn't releasing enough fuel into the burner.
DIY fix possible
Check if other gas appliances, like a cooker, are working to ensure gas is reaching the propertyPress the reset button (usually a small flame symbol with a cross) for three secondsEnsure your condensate pipe hasn't frozen if the weather is extremely cold exteriorly
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 S.13 — no call-out fees, no surprises.
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Glow-worm Flexicom cx 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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