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Yea know what you mean about callbacks, its a pain, think I'll just stick a new pump on like you suggest, wont do any harm, thanks for the advice Chris!! :lol: :lol:

I balanced all the rads after the flush, the pump, grundfos 15/50 was a bit noisy but settled down after a while :roll:

Hi All, I did a job recently where I power flushed the system using a kamco via the 15/50 pump. After the flush was complete i got the 1st floor rads to work but had trouble getting the ground floor to work. Some rads that were cold in the middle before the flush worked fine afterwards & some...