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Not sure how to know if its overpumping? It is on 2 now (out of 3)

I have also installed the magnet filter thing, will that keep the dirt cleaned? Also, when you say find the couse, what do you think it could be and how to fix more permanently? many thanks

Problem resolved. The pump impellers were full of gunk, plus the pipes around clogged. All cleaned and the CH works beautifuly, rads too hot to hold! Thanks for all your replies and suggestions.

Problem resolved. The pump impellers were full of gunk, plus the pipes around clogged. All cleaned and the CH works beautifuly, rads too hot to hold! Thanks for all your replies and suggestions.

Does it mean I need it? Can I cut it out and just leave with a junction? I am not a plumber and would not be able to solder the pipes. However, I would be able to use compression elbows and junction.

There are two pipes that join up 30cm further up. One of them I believe is from the tank. The problem is that I think its clogged and there is no flow through the system. The magnet sticks to it.

[/url] Thanks Do I need it and is there any alternative to put instead as it seems to be the cause of the problem on my system?

Hi there, can someone please tell what is this, its name and purpose? It seems that is clogged up, if I bring magnet to it - it sticks! Thanks

Many thanks for your reply oldbuffer! 1. I have not done this, but will check and see. First close the valves, then unscrew the release screw to see if there are any leaks and only then proceed with opening the pump. 2. Filter installed with x400 and is trapping dirt, however it is too...

Try to turn the room thermostat and HW off and see if the pump and boiler continue indefinitely. That will mean that the valve is locked and is requesting the boiler to heat the HW cylinder. If the do stop, then it may not be the motorised valve.

The system has not been changed and not sure why would balancing help? Also, it takes couple of hous for hot water to get to the last radiator even if all others are closed.

It is gravity DHW, but the problem is with CH

It seems that I have the same problem, can you tell me how did you resolve it? Thanks

We have a conventional system with 10 radiators (30+ years old, the boiler is 4 years old). The radiators are not getting hot water, although they are all bled. When all radiators are open, it takes couple of hours for the first couple get hot, next two get worm, then next two luke...

Problem resolved at 02.00 am! After switching off the whole system at 00.30, an hour later I realised that pump and the boiler are still on. The culprit was the motorised valve, it did not close and the boiler was sending the hot water to the hw cylinder not radiators. After manually closing...

Thanks JohnD, I would not be able to do it myself. What do you think this whole job could cost?

First floor - 4 radiators + 2 towel rail radiators (which do heat up if open) Ground floor - 5 radiators (4 get lukewarm if the above are shut, the furtherest one is cold) Earlier I closed all apart the last one. Then it did warm up, othervise is stone cold.