I'm new to this group, and I notice there aren't many postings, but I hope someone can please offer advice. I'm not very good with plumbing, so if I am lacking info, please forgive me and ask for more details. Also, I noticed there is a plumbing group but it's very inactive, which is why I'm posting here.
Anyway, My central heating pipes/rads make quite a lot of noise of running water, particular upstairs and in the pipes going to upstairs. The radiators upstairs are a nightmare. One of them is relatively ok, heat-wise, but it needs bleeding every 2 or 3 days. The other radiators are cold and appear to be empty. If I open the bleed valves on these with the thermostat set so the pump and heating is running, then water drains from the radiator (I can feel suction on the bleed valve.) If I turn the thermostat so the heating is off, the radiators fill up, but when they are full, they are still cold (getting full with cold water??) Sometimes, through bleeding all rads at the same time and then switcing the bleed valves off, I hear running water, then the header tank overflow pipe starts spilling water. And that's about it, I'm not sure where to begin to look.
Does anyone have any ideas or suggestions. I'm quite prepared to call a plumber out if that's what's necessary, but I'd prefer to know what the problem is before I did that so he can't try pulling the wool.
Many thanks for reading, Bob