BoilerFaultCodesYour boiler has stopped working because it failed to light or stay lit when it was supposed to.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flame failure has occured. Reset boiler by turning temperature control to Off, waiting 30 seconds and then on.
What causes this fault?
This fault occurs when the boiler's internal safety system cannot detect a flame after several attempts to ignite. The root cause is usually a lack of fuel reaching the burner, a worn-out ignition spark, or a sensor that has become too dirty to 'see' the flame even if it is actually lit.
This issue is more frequent during the first cold snap of winter when components that have sat idle all summer are suddenly forced to operate under high demand.
DIY fix possible
Turn the temperature control knob to the 'Off' positionWait for at least 30 seconds for the unit to resetTurn the temperature control knob back to your desired settingEnsure there is gas reaching the property (check other gas appliances)
Find a Gas Safe engineer
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