Cold radiators after draining heating system

[Lord Kenny]

I installed a towel rad by draining system, replacing rad and cold bleeding system. adjusted valves on hot rads and got most others working. Bled system hot, but still 2 rads cold, 1 upstairs and one downstairs with cold pipes too. Any solutions please?

 

[plumb-tech]

Could be air lock. Close all the rad valves, leaving one of the rads that is cold open to try and push the air out, once hot do the same with the other and then balance the system.

 

[SimonG]

Air lock. As plumb tech said. Close everything off bar one of the cold rads. Is it sealed or open vented?

 

[Lord Kenny]

Thanks I'll give that a try. It's an open vented system.

 

[Lord Kenny]

I closed all rads except one of the cold ones and that worked. Hot rads all round. Thank you very much for taking the time to reply to my post.

 

[SimonG]

Glad you got sorted and thanks for letting everyone know it worked