Another cold radiator

[tomupnorthuk]

Hi All,

I'd like your advice on the following scenario please. CH is split into 2 circuits and one radiator on the upstairs circuit never warms up at all, even with the other radiators shutdown.

What does happen is that the pipe and adjoining metalwork at the lock shield end of the offending radiator is hot but the pipe at the TRV side remains cool.

There is an arrow on the TRV pointing towards the radiator. There are no arrows on the lock shield. The TRV pin moves up and down freely.

Has the installer got the TRV & lock shield valve the wrong way round ? TRV is on the right hand side on all radiators throughout the house.

Thanks

Tom

 

[kbdiy]

Either the TRV is on the wrong end or it's fitted the wrong way round. If the pipe at the lockshield gets hot first then it is reasonable to assume that is the flow pipe. The TRV needs to be reversed or fitted where the lockshield is now.

 

[Diyisfun]

Or buy a new bi-directional one, you are only fiddling at one end then.

 

[jackthom]

TBH I would still expect the TRV to work even in the the wrong direction although it could get noisy. Looks like one or both of these valves aren't opening fully, or there is a blockage in the pipework.