Recent content by drabux

The two of you have had your say. I know what your opinion on the matter of touching systems by anyone other than those saintly people with Gas Safe certificates. Thanks. I will gladly employ a certificated heating engineer if he/she can be directed to the likely cause rather than shelling out...

I did not say that I had not done any work on the heating system. I said that the heat exchanger had been cleaned by a gas safe engineers and replaced by him. I have also cleaned the heat exchanger as well as fit the radiators in the first place. The fact that you are willing to jump to...

Dan, The heat exchanger WAS cleaned and then replaced by a Gas Safe engineer. The very fact that he has been unable to fix the problem and seems at a loss to understand what the problem is, is why I am asking for your advice. Alan

Boiler is a Suprima 40. Exchanger has been cleaned and then replaced, so I'm inclined to rule that out as the cause. Thanks.

I fitted repo cast iron rads two years ago and from that day onwards there has always been a serious air bubbling issue around the pump to the extent that there's so much air, it takes ages for the rads to warm up. It's not air in the system due to lack of bleeding because if I run the pump...

Here's the picture of the layout. I'm still not convinced the low head could be the problem since I don't see why air would only be drawn in when the boiler is running (I've had the pump running with and without the boiler on and I only get bubbles with the boiler running) I can't seem to...

pipes

Thanks. I will take a picture and post tomorrow. There is very little head on the system because I live in a flat. However, as I said, I have run the pump for hours without the boiler running and there is no noise (no air being sucked in) and so I have come to the conclusion that the boiler...

Hi, I'm new here but not to DIY. Hopefully in future I can help others with my knowledge but now, I need your help. So, I have an open vented system with newish cast iron rads and suprima boiler. Ever since I've lived in the flat (3 years) I've had the following problem: 1. Pump...