BoilerFaultCodesYour boiler has tried to light several times but failed, so it has safely shut itself down for your protection.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition lockout
What causes this fault?
This fault occurs when the boiler's control system cannot detect a flame after several attempts to ignite the gas. The most common reasons are a lack of gas supply to the unit, a worn ignition component that can no longer create a spark, or a faulty internal valve that is failing to open.
This issue is more frequent during the first cold snap of winter when components that have been idle over summer are suddenly put under heavy strain.
DIY fix possible
Check that your gas meter has credit and the isolation valve is openPress and hold the reset button for five secondsIf it is freezing outside, check that your condensate pipe is not frozen
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 Central heating demand indicator FLASHING SLOW (once per second) — no call-out fees, no surprises.
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Worcester Bosch 24/28CDi II RSF 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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