Yet another boiler problem - constantly igniting even though it's lit

[morse]

Hi All,

Sorry another boiler related question.

I have a 25+ year old Potterton Prima F something (the label rubbed off long ago). It's generally been reliable but has recently started to play up. It's constantly trying to ignite even though the boiler is lit and functioning otherwise normally. Just so I'm better informed when an engineer is called, is this likely a reparable issue or should I prepared myself for the inevitable?

Many thanks, Adam.

 

[gas112]

you mean you can hear it constantly sparking . worst case scenario board . other than that lead or electrode and check pilot shroud hasnt moved (they fall apart) and pilot injector clean

 

[morse]

Thanks!

Yes, it seems to be constantly cycling, trying to light. You hear the clunk of the starter and a puff of flame in the viewing hole.

I'm not sure there's much of a board in there. It only has a dial to control water temp and no other buttons/display. I'll see if I can find an online manual.