thanks again for all the help, i'll have one more go with someone local (recommendation from neighbour, with all the necessary credentials and has recently sorted out the same boiler in the neighbour's house) and then post back here if no luck. Maybe I have been unlucky and it is just a really...
thanks guys. bizarely as soon as I test the volatge between air pressure switch and neutral the boiler fires into life so i guess the switch or pcb is done. just need to find someone who isnt 'too busy' to come and sort it for me!
HI, and apologies in advance if I get it wrong with my first post. I have checked your wiki and the FAQ and links as well as many other posts. My simple question is where is the line drawn on what I can and can do myself to my boiler? I should add that I use a healthy does of common sense so...