pilot solenoid is quite a common fault on the classic and is easy to check, just look though the sight glass or at the pcb and see if its sparking but not lighting. if it is, its a 5min job and ya can get um separately
Hes already stated it fires for 20 seconds or so, so it must be just circulating the boiler.
no it doesn't. i've changed about 20 where the solenoid fails wen warm.
This is what i was told by a friend who used to comment on here a few years ago, not seen him lately (Andy Strachan from Ossett, Wakefield). This is why he said it was the gasvalve, as he has just changed one last week, i said to him 'i'm having problems with an ideal classic' and he said to me 'is it firing up for about 20 secs and then cutting out' and then told me it was the solenoid on the gasvalve, before i even gave him the symptoms, but i thought i'd get some other ideas before i spend £120 on a gasvalve (which it might not be).