Prima F (fanned balanced flue) has had an issue where the reset button has been triggered a number of times. I have simply reset the switch by pushing it back in and the boiler has operated as normal. Now the boiler is refusing to fire up at times even though the reset switch is on. If I leave the boiler off for sometime it does start up.
Where do I start to trouble shoot the problem?

Narinder Singh, August 2007

I have 2 of them, it might be that the flue fan is not generating enough of a draft or its not getting enough air. if u unscrew the cover and leave it hinged at the top, hold it open slightly about 20 mm and try it. It should light if its the fan problem..

once heats up it should work away itself for a while.

make sure that the copper themistat is attached closely to the pipe in the boiler so it prevents it from tripping out.

Ken O'Connell - O'Connells Guinness Bar, Limerick Ireland, October 2011

I know, ime sat here with no heating as my prima f has died on me, its a sh*t boiler and cant wait til heat man fits me new one, until then ile freeeeze

Richard Stokes, November 2007