New radiator with new valves not getting any flow

[jacoscar]

Hello, I just finished renovating my downstairs toilet and I just tried to turn on the heating.
There isn’t any noise of water circulation and the radiator doesn’t get hot.
I have individual Tado valves on all radiators (except this one) so I just have one of them calling for heat.

The obvious stuff: the boiler is on, the radiator whose Tado valves is calling for heat is getting hot.

I opened the lockshield fully using an allen key (counterclockwise) and also opened the other valve fully counterclockwise.

I don’t remember if I made sure I piped the flow on the right and the return on the left.
The instructions say it matters

https://www.free-instruction-manuals.com/pdf/pa_1139043.pdf

Could they have a one way valve in one of them?

 

[just pumps]

Have you tried opening the air bleed valve?

 

[jacoscar]

Have you tried opening the air bleed valve?

Yes, when I bled the air, it’s full of cold water

 

[jacoscar]

Ok, I’ve let some more water out and there is water flow now and it’s getting hot.

I thought airlocks were an urban legend.

 

[avonmouth]

Bob Marley had airlocks and he was a legend