BoilerFaultCodesYour boiler is currently struggling to light the flame it needs to provide heating and 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
What causes this fault?
This fault occurs when the boiler is unable to successfully establish a flame after several attempts. The most common reasons are a lack of gas supply to the unit, a worn-out ignition electrode that is failing to create a spark, or a faulty gas valve that isn't opening correctly.
This issue can occur in winter if the external gas regulator freezes or if the gas meter becomes restricted by extreme cold.
DIY fix possible
Check that your prepaid gas meter has creditEnsure other gas appliances in your home are workingPress the 'Reset' button (flame symbol) on the boiler control panel
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.23 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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