my boiler fires up when on constant then shuts back to pilot light after about 15 secs,if it is on HW or CH anybody have any idea what my prob could be?desperate.

dave, November 2005

You could turn the pressure up by opening the tap which allows water in to the boiler. Pressure needs to be at least 1 i/2 on the gauge

Jackie Tomlinson, May 2007

Hi There,

I have the exact same problem. From what I can tell it is either the flame sensor that has stopped working or a lack of pressure.

On mine, the pressure gauge needle is almost zero and the red pin (the marker of where it should be I presume) is at 2 bar.

Let me know if you get any help!

Dannyt, March 2007