hey all, check out the video on this website. might make things a bit clearer. boiler worked after hubby saw this!!
woohoo!!
http://www.ultimatehandyman.co.uk/TOPPING_UP_A_COMBI_BOILER.htm
doktor
February 2009
did you get a refill key a white t ?? or a flex pipe silver braided hose if its the first there is a white square knob on the bottom of boiler nex to it is a hole for the key put it in lock it and fill up , if its the later open both valves and fill to 1 bar