Recent content by ForestHillRob

Thanks Madrab. Yes, I think that what I need is someone who is good on diagnostics and can methodically work through the system to find the problem. The first plumber suggested a powerflush, but I'm not convinced that spending £750 on that is going to fix the problem. I had one 2 years ago and...

Logically I would agree with you that if the return temp is low then the radiators are doing their job and are transferring the heat from the hot water to the house. However, as I understand it (and I'm not a CH engineer), the flow and return temps shouldn't have a differential of more than 35...

I have a 4 year old Vaillant EcoTec 428 system boiler which has been showing an F23 error code which is apparently down to a high differential between flow and return temperatures. It is a large 4 bed house with 16 rads. I had a plumber in who changed the pump on the system, but he said that...

Cheers - thanks for that. Was dubious about trying to remove the cap without having a clue what was under it ...... apart from a lot of water that might flood the house!

Has anyone ever seen one of these? Just moved into a new house and several radiators have these on teh outlet end (they have TRVs on the inlet side. One of the radiators is cold at the bottom and I wanted to remove it and take it into the garden to try to flush it through and get any sludge...

Old Valve