All radiators won’t get hot together

[Terrance123]

All my downstairs rads come on together but upstairs won’t at all. Then when I turn all of downstairs off at the lockshield valves then I can get each rad upstairs to get hot but then when I turn the lockshield valves of downstairs back on the upstairs rads go cold again, has anybody any experience with this? I’ve also bled all the radiators in the house already and still can’t get it to work

 

[BlueLoo]

Has it ever worked?

 

[JohnD]

All my downstairs rads come on together but upstairs won’t at all. Then when I turn all of downstairs off at the lockshield valves then I can get each rad upstairs to get hot but then when I turn the lockshield valves of downstairs back on the upstairs rads go cold again, has anybody any experience with this? I’ve also bled all the radiators in the house already and still can’t get it to work

Yes. You will need to balance the system.

As you are new here you will not know that you should ignore BlueLoo's advice.

 

[BlueLoo]

Hark at her lol.