Very noisy tall radiator

[richard whitehill]

Hi all, I have recently had a radiator replaced which obviously required a system drain.
Since then a different radiator in the hall is making incredibly loud noises when the heating comes on. It sounds like gurgling and clicking indicative of air in the rad. However, I have bled all rads multiple times and there is no air coming out, just water. All rads including the noisy one get hot across the whole rad too.
Any ideas how this can be remindied.
Thanks
.

 

[cross thread]

Try adjusting the lockshield valve ,may help

 

[gas112]

These tall rads are a nuisance to get rid of the air trapped in them . If you turn all the other rads off and just leave that one on for about twenty mins it usually pushes the air out .

 

[richard whitehill]

Hi, yes alive done that but will try again. My problem is I have Tado smart valves on most rads (not the noisy one). This means at least one has to be on to call for heating at the boiler.

 

[oldbutnotdead]

Can you swap a smart head onto the tall rad? If not, your boiler may have an internal controller you can use to override the Tado

 

[ianmcd]

leave the CH system off for 30 mins or so and bleed the problem rad while the system is off (pump not running ) and see if you then get air out

 

[richard whitehill]

Good idea about swapping out a smart trv. I'll give it a try.

 

[oilhead]

Bleed your noisy rad through both the flow and return individually, running 2-3 litres through each. Do this cold.

 

[Bod ...]

With the but end of a hammer or a rubber mullet; tap the sections where the vertical meets the horizontal.

Don't go mad but don't tickle it either

 

[richard whitehill]

At the Vales?

 

[richard whitehill]

Bleed your noisy rad through both the flow and return individually, running 2-3 litres through each. Do this cold.

Can you describe how please?