Last 2 rads in the system are cold

[Blueblueargo]

I cannot seem to get 2 rads ( the furthest ones from the boiler) hot.... one does have a valve on it but the other doesnt.... any ideas anyone?

Secondly I have one radiator which does have thermostatic valve which I cannot cool down... ie it is always on... again.... any ideas???
Thanks

 

[seco services]

try shutting the locksheilds down on the nearest rads to the boiler abit.
they are probably nicking all the heat/flow.

trv if you shut it right down does it still get hot ? if so it sounds knackered.

 

[Blueblueargo]

I think your right about the TRV

I've tried closing down all the other rads and it doesnt make any difference... I also tried bleeding the last rad and eventually hot water comes through but it soon goes cold again???
Any other ideas
Thanks

 

[seco services]

if you have shut all but them last two rads and it still causes problems then their may be a restriction in the pipework not letting the full flow through
so when the other rads are open its not getting any flow.

try the pump on full speed.

 

[Blueblueargo]

sorry I'm a complete a novice at this how could I adjust the speed of the pump?

 

[seco services]

what system etc have you got ? or do you know where your pump is ?

 

[Blueblueargo]

Its and Ariston Combi A series

 

[seco services]

leave the pump then if its on a combi.
did they work then stop or always been a problem ?

 

[Blueblueargo]

They have never worked particularly well.... one is in a spare room so I hardly notice but the other one is in the kitchen so its a bit of a pain... I've turned all the rad off except the last 2 and its not working. the Pipes feeding them are not hot either???

 

[seco services]

i would be inclined to remove one at a time and give it a flush and open each valve into a bowl or connect a hose and see if they let water through.

 

[Blueblueargo]

Ok... I think I'll need some help with this one..... thanks for your help!