I live in an old cottage with a plumbing and heating system to match. I noticed that the radiator in one of the bedrooms was cool at the top so I decided to bleed it. There was a lot of hissing and I thought air was coming out and then I suddenly realised that the radiator was getting colder rather than hotter. It seems that air was being taken in rather than expelled and now I have a rad with just a hot strip along the bottom and air gurgling around the system. Can anyone please help me and tell me how to cure this problem.
Yes I had the heating on at the time and I now know that was the wrong thing to do but I won't do it again.
Thankfully it seems that the valve allowing the heating to top up had been turned off at some time and the valve had jammed in the closed position. However a little gentle persuasion finally sorted it out and I have now bled the rads (with the heating off!) and everything is fine again now thank you.
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