Hi. I've previously received some great help & advice on this forum and hope someone could provide some to me again. I have a worcester 24i Junior boiler. Yep, I might be blond, but had no idea (until now) that bleeding radiators had an affect on the pressure gauge. So today I bled my radiators and then shortly afterwards noticed that the pressure is more or less zero on my boiler. I didn't know that it was related until I hit google. So anyhow, I'm trying to repressurize the system but can't find a tap. It certainly looks like it's connected to the mains (underneath and up inside) the boiler, there appears to be a short flexible hose which leads me to believe is the mains water supply. There is a small red knob attached to the one side, but it is near impossible to turn and even more impossible to see what's written on the knob (and which way to turn it!) I've tried taking the front cover off, but realised that even if I do so, I won't have easier access to the red knob - which I can't seem to turn. The unit doesn't look all that old so can't imagine that the knob/tap is rusted and stuck. But I just don't know how to fix this. Advice appreciated. oh, and btw. what are the consequences of running at zero bar (apart from a soon broken boiler I guess)? Thank you for any help in advance.