DIY Doctor UK DIY Forums

problem with all radiators not working if i turn down roomtat to below when it clicks downstairs radiators still getting warm when roomstat up not alladiators get hot any suggestions to cure PLEASE

Sound like a balanceing problem ie the radiators down stairs are robbing the upstairs radiators. Turn down the [color=red]lockshield val[/color]ves on each radiator down stairs and open to full the radiator upstairs [color=red]lockshield valves[/color]. If this lets upstairs radiators get hot but downstairs now are cooler, then open down stairs a little more & close lockshield valves upstairs until the system is balanced out. If that dont solve your problem then you may have air upstairs or the system is badly piped or the pump speed/size needs increasing.