Cold Radiator (removed Myson TRV and valve pin OK?)

[black2908]

Hi,

I have a single cold radiator. After some research on this site I managed to remove the Myson TRV and check the valve pin. It is in the up position and springs back up when pressed down so I assume this is OK.

With the TRV removed and the valve in the 'up' position, I guess the radiator should get hot but it remains cold.

I have tried bleeding at both the top and bottom air vents and water comes out freely with no hissing sound indicating no air in the radiator.

When I bleed the bottom air vent the water coming out gets hot.

Any further help would be gratefully appreciated.

Thanks

 

[twgas]

is the lockshield valve open
have you tried turning every other rad and the hot water off to push through any poss air in the pipes

 

[kevindgas]

deja vo

funny that i had a similar problem today at a customers eventually took the valve off and then put the trv head on the valve the head overpowered the spring in the valve = shut valve

fitted new trv and heating working happy days!!! shame it took more than 1 visit to find it

 

[black2908]

Hi,

If it is a faultly TRV then when I leave the TRV off for a period of time, shouldn't the radiator come on as the valve is left open?

How would I check if the lockshield valve is open?

Thanks