Baffling radiator problem

[dazzaangel]

Hi

Hope someone can help. The radiator in my ensuite only gets slightly warm while all others are roasting hot. I have tried turning of all the radiators but this didn't improve the heat, if anything the radiator is cooler! I have turned them all back on and the offending rad is heating up but still only warm. I have taken off the thermostatic valve to make sure it is not stuck in the down position and it is ok. The pipe entering the rad by the inlet is hot and th pipe coming away from the thermostatic valve is cool. The thermoshield inlet valve is fully open but i have noticed that when it is turned off then on there isn't the gushing noise that the others make when turned on so am wondering is thete a flow problem. It seems strange that the rad doesn't get hotter when the others are off even with lockshield open fully.

 

[jase158]

or even piped off return from other rad so when other rad is turned off this is getting no heat causing it to go cold when other one is cold!!

 

[REDSAW]

The rad has never really gotten hot I am perplexed as to why it doesn't get hotter when tge demand is reduced by turning all others off.

2nd idea plausible lol

 

[garyplumb]

Dodgy Trv or maybe incorrectly piped ie 2 flows or 2 returns to rad so no flow.