BoilerFaultCodesYour boiler is failing to light because it isn't receiving a gas supply or cannot detect a flame.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No gas supply
What causes this fault?
This fault occurs when the boiler's internal computer tries to start the burner but cannot establish a sustained flame. The most common reasons are a temporary interruption in your gas supply, a worn-out ignition probe that cannot create a spark, or a faulty gas valve failing to release fuel into the combustion chamber.
This fault can occur more frequently during extreme cold snaps if the external gas meter regulator freezes, restricting the flow of gas to the property.
DIY fix possible
Check that your gas emergency control valve (usually by the meter) is in the 'on' position.If you have a pre-payment meter, check that you have sufficient credit.Check if other gas appliances in the home, such as a hob, are working correctly.Press and hold the reset button for five seconds to see if the boiler restarts.
Find a Gas Safe engineer
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