BoilerFaultCodesYour boiler is trying to start up but cannot light the small pilot flame needed to ignite the main heating system.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition, pilot or flame proving fault
What causes this fault?
This fault occurs when the boiler's internal safety system fails to detect a constant flame after several attempts to spark. The most common reasons are a blocked pilot jet preventing gas flow, a worn-out ignition lead that can no longer create a spark, or a faulty sensor that cannot confirm the flame is actually lit.
This issue often surfaces after a long summer break when debris or spiders' webs have settled in the pilot tube, blocking the small amount of gas needed for ignition.
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionVerify that other gas appliances in your home, such as a hob, are working correctlyPress the reset button on the front control panel to attempt a restart
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
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