When I go to switch on boiler.(It's approx 7 yrs old) I can hear the ignition clicking and the pilot light is on whilst it's clicking. The boiler ignites but when the clicking stops instead of boiler staying on. The boiler & pilot light goes out. Could it be a new circuit board is needed? Any ideas, would be grateful.

Marcus Percival, September 2007

Its a Glow Worm, pcbs are not very good.
Change the pcb. Buy on keeptheheaton.com next day delivery. Take 30 mins to replace.
get manual from Glow worm website.
Otherwise it may be switching off due to "High Temperature cut off" - this may be faulty

Tony Pew, September 2007