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Both radiators furthest away now aren’t getting hot at all and the pipes feeding them are barely warm, might be time to get a professional in…

Tried this today, water was flowing out when both valves were open

I have a upvc window that won’t latch and close. The handle moves freely but the mechanism doesn’t move. The mechanism won’t move by hand either. The window is on the first floor so any help would be appreciated and even better if I can do it from the inside Thanks in advance

Will try again tomorrow from cold. Is there a reason it has to be half an hour from cold? Thanks

Swapped the trv head with one from a rad that was working

Top and left side of the rad now hot but nothing at the bottom. Similar to the rad on the other side of the wall

All existing and been cold for nearly a year now

Turned a very hot radiator off and now the pipe feeding the cold rad is too hot to hold but actual rad is barely warm. Set all the other lock shields to a quarter turn and see if this works. Thanks for the help

Thanks will try this, however whoever installed the rad put 2 blank valves on the radiator rather than 1 bleed valve which is making it hard to bleed without making a mess haha

Yeah I went through and closed all the lockshield valves and then opened in quarter turns from nearest to furthest (nearest 1 quarter open, 2nd nearest 2 quarter ect.). The one not getting hot is the furthest away so I left that fully open Would you suggest a different way?

Will give it a try with all the lockshields at a quarter turn thanks. Slightly changed my post as it was barely getting warm with all the other radiators

Yeah gone through and made sure that the pins a moving up and down. The pipe feeding the TRV isn’t getting hot when all the radiators are on.

I have 1 cold radiator that is furthest away from the combi boiler. I have balanced the radiator so that the lockshield valve is all the way open, however no hot water coming through the TRV. When all the other radiators are off it barely gets warm. I thought it might have been an airlock so...