Your boiler has failed to ignite or stay lit, which is usually caused by an interrupted gas supply or a frozen condensation pipe.

DIY fix possible

Check that your gas meter has credit and the isolation valve is open.Verify if other gas appliances, like a hob, are working correctly.If it is freezing outside, check if the white plastic drain pipe is frozen and thaw it with warm water.Reset the boiler by turning the selector switch to the 'R' position for five seconds.