pipes below concrete floor, pipe from floor to radiator value cold, where could the blockage be?

dianne, November 2008

aye have 1 hot radiator but the rest are cold did the bleep wurked for a bit at the top of 2st radiator but botem was cold and pipe traid bling the 3st and nuthing and the pip cuming out of the boiler is leking and so is the pip ruing with it

david skouce, November 2012

I HAVE THE SAME PROBLEM AND HAVE DONE ALL OF THE ABOVE BUT STILL COLD PIPES COMING INTO ONE RADIATOR. ALL OTHER RADIATORS HOT.

ALISON guadagno, November 2008

Probably not a blockage - are other radiators hot?

Need to ensure both inlet and outlet valves are open (anticlockwise) and that radiator has no air in it - little bleed valve on top of rad - need a special key with small square socket. Undo bleed screw turn and a half and wait for water to come out - have an old rag handy to catch the water.

Peccavi, November 2008