Recent content by diydavidw

Thanks folks. Great help.

Any views on relative merits of UPS3 vs. Salus 200A or DAB Evosta 2 or 3?

Its definitely the pump, Ian. Probably worn bearing as its a cheap Grundfos clone... but its done 7 years so can't complain!

Hi. My Parker 15-60 130 pump has been running fine for 7 years at its highest speed in my 19 radiator/ Greenstar 30 CDI Classic vented system. The pump has recently developed a knocking sound when hot and working hard (disappears on speed 2) but this is not fast enough for my...