Problem after draining system

[MalcMJM]

I have drained my CH system to replace a rad and valves but now I have one rad that will not heat up.
I believe that I drained the system correctly by shutting off the inlet water in the attic for the CH and drained the system by using a hose pipe from the down stairs rad (the one thats now not working) . Once the new rad and valves had been installed, I turned off the drain tap on the rad and turned back on the CH water supply in the attic, I then bled all the rads before and after turning on the CH system.

Please, any suggestions as I am a novice but my wife thinks I am a cowboy

 

[kevplumb]

are you sure the valves are open
if its got a trv on they do stick occasionaly

turn the others off might be stubborn air lock

 

[MalcMJM]

Yes all the valves are turned on, I have even tried to modulate all the vavles

 

[brumylad]

open the bleed valve of the cold rad.
does this release air or water or nothing ?

 

[keego]

Shut down all the rads apart from the offending one & turn the pump on full.

 

[MalcMJM]

open the bleed valve of the cold rad.
does this release air or water or nothing ?

I have tried that, water is coming out of the bleed valve