Hi, just wondered if anyone could help. I've recently moved into a 4 bed house which didn't have any central heating so I had this installed a few months ago. All the rads downstairs get very hot but upstairs only a couple of rads get warm and the others are cold. I've bled them, balanced them but it seems to me that there is a blockage somewhere. Can this happen on a new system or has anyone else got any ideas?

Tony, November 2012

Both valves are open at each end A1.

Tony, November 2012

call the people who installed it out to check the system,i take it they gave you a guarantee

mm, November 2012

are valves fully open on BOTH ends of the rads?

A1, November 2012