Well i went into the loft and tried again, but this time there was no hissing air :(
So i went round the radiators again, and BINGO. The one in the hall musta been around half full of air! Once that was all released i started the system again... took about an hour for it to get goin but i now...
The little valve at the top of the pipe, should i sit with it open until the hissing stops? I sat there in the freezin cold loft for about 15mins with it hissing, it hadn't stopped when i shut it...
I assume from reading on here that i have an open system, not a sealed one. So should this...
It was off when i was bleeding it... just seemed to go on forever, and like i said the pipe heated up then went cool again even tho the other pipe remained hot hot....
Ok so I opened that little valve thing at the top of the pipe, it was hissing air for ages and then the pipe warmed up... But after a while it was still hissing and went back to cooling off, even tho the one from the box valve was still hot... I closed it cos the missus called me for dinner lol...
Hey, here are the images of the system... its a right mess up in the loft!...
I tried putting the valve thing into the OPEN potision but nowt happened... There's a little switch above the main one that has W M H, but the little black switch doesnt seem to be attached, like its broken off...