BoilerFaultCodesYour boiler has stopped working to protect itself and simply needs to be restarted to clear a temporary error.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fault occurs; requires reset (Turn On/Off switch to 0, wait five seconds, then to I).
What causes this fault?
This fault happens when the boiler tries to light the flame but fails to detect one after several attempts. It is usually caused by a temporary interruption in the gas supply or a worn-out component that struggles to create the initial spark. To keep you safe, the system shuts down completely until it is manually told that it is okay to try again.
This issue is more frequent during the first cold snap of winter when older components are under sudden strain after being idle over the summer.
DIY fix possible
Turn the main On/Off switch to the '0' positionWait for at least five secondsTurn the switch back to the 'I' position to restart the boiler
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