Hi,
I have all my rads replaced and moved about a month ago everything was fine at first. I noticed the boiler now once warmed up has a constant low knocking sound and the rads upstairs all need a big bleed, bolier still noisey after this.
Plumber drained down the system twice and added inhibtator when he fitted the rads he did mention the water was very dirty and could do with a proper flush but to see how it goes. When I bleed the rads as well upstairs the water was dirty. downstair water clean, I bleed the pump as well.
I thinking its just the sludge thats got moved around and I do need a proper flush, do the symptom sound consistent with that ?
I have all my rads replaced and moved about a month ago everything was fine at first. I noticed the boiler now once warmed up has a constant low knocking sound and the rads upstairs all need a big bleed, bolier still noisey after this.
Plumber drained down the system twice and added inhibtator when he fitted the rads he did mention the water was very dirty and could do with a proper flush but to see how it goes. When I bleed the rads as well upstairs the water was dirty. downstair water clean, I bleed the pump as well.
I thinking its just the sludge thats got moved around and I do need a proper flush, do the symptom sound consistent with that ?
