Recent content by simwra

Pump seems to be running fine, adjusted the speed down and back up, it responds and sounds like its running normally, all the rads heat up fairly quickly too so how else can I tell if it is low flow rate? Si

Thanks Dave, I will try adjusting the speed of the pump to see if that makes a difference. I have just had to replace the 3 way motorised valve as the last one had worn out so the Grundfos pump might be next. fingers crossed this will sort it. Just found out my boiler is a 50B, I think it is...

Hi Dave, how about a power flush then? the boiler was installed when the house was new in the early 90's. Would it really be that bad using DS4....or are you just risk averse :D It's not the pump, it is coming from the HE, shame they're obsolete now otherwise I would have considered...

Hi all, my first post but a long time user ;) I've read the sticky so here goes... 1) Boiler make / model (gas or oil) Gas, Myson Orion (50 - i think) 2) What is / is not happening. Boiler knocking when in use and the stat is turned up past '2'. 3) Has ANYTHING else been done or...