BoilerFaultCodesYour boiler has failed to ignite properly, meaning it cannot create the flame needed to provide you with heat 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: Flashing fast
What causes this fault?
This fault occurs when the boiler attempts to start up but cannot establish a stable flame to stay running. The most common reasons include a blockage in the gas supply, worn-out spark electrodes that can no longer ignite the fuel, or a control board that isn't sending the correct signals to the gas valve.
DIY fix possible
Check that your gas pre-pay meter has credit (if applicable)Check that other gas appliances in your home, like a hob, are working correctlyPress 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 FAIL POINT J — 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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