BoilerFaultCodesYour boiler has tried to light several times but cannot detect a flame, causing the system to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition Control PCB 41 has attempted 4 ignitions and failed. Flame not detected.
What causes this fault?
This fault occurs because the boiler's control system cannot confirm that a flame has successfully lit after several attempts. It is usually caused by a lack of gas reaching the burner, a worn-out ignition spark electrode, or a dirty sensor that can no longer 'see' the flame even if it is there. The boiler shuts down as a safety precaution to prevents unburnt gas from building up inside the unit.
This issue can be more frequent during the first cold snap of winter when components that have been idle all summer are suddenly forced to work under high demand.
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionIf you have a pre-payment meter, ensure you have credit availableCheck if other gas appliances in your home, such as a hob, are working correctlyPress the reset button once to see if the boiler restarts
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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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