Thank you so much! a sharp knock with a hammer did the trick! it's all running smoothly and my pregnant partner can have a bath!
It's a grundfos selectric pump btw.
Is this a sign that my system needs a flush?
Thanks
Alex
Hi Guys,
I moved into my house about 2 months ago, the boiler was working fine when i moved in providing HW and CH. whilst i've been working on the house i've had the boiler turned off (with pilot light on) now i've come to turn it back on it clunks and bangs very loud! the boiler then seems...