central heating

[nigel allsop]

one of my downstairs rads does not get hot,i've had a new pump,new rad,checked the valves,flushed and bled the system but the pipe and the valve leading to the rad is hot but the rad is not

[alan30]

Have you checked both valves on the radiator are open and bled the radiator itsel rather than system?  Sorry if it sounds obvious but I once had a return valve that was stuck shut.

[tony1941]

Yes, I too have had valves stuck shut - they were thermostatic and had been left turned right down for a year or two.  The solution was to remove the outer thermostatic knob ( either a screw collar below, or sometimes a plastic catch you have to pull down) and then ease the little brass pin in the middle up and down with a pair of pliers.  (up for on). Good luck.