Recent content by vmx1200

Thanks for replying. When I took the pump head off there was no crud and the inlet and out let ports were clear. How do you get to clean the pipe you refer too. The boiler is in the loft really low down so it is almost impossible to get to any of the rear connections!!

Hi I wonder if I have an airlock in my central heating. The system is based around a Potterton Puma combi boiler. I fitted a number of replacement TRVs a couple of month ago bled the radiators and all worked fine until about a week ago. Now I can only get one or two radiators to heat up and...

Hi Dan Thanks for the rapid response! I think you are correct in your diagnosis, when the DHW is turned off the red light on the control board and the burner were staying on for up to 5 to 10 seconds. I have removed the micro switch and WD40 and 3in1'd the actuating rod (it is Sunday...

Hi all Read every thread about Potterton Puma diverter valves and still confused! Puma 100 permanent pilot CH working fine, fires up morning and evening and all rads start to warm within minutes. Turn on DHW and can run as much as I want, completely filling a bath, turn off hot water and...