ambi,
I tried lowering the temperature to "noon". I don't think it has made a difference in my case.
This morning at 4:30AM I was woken up by a vibration in the CH system. I got up to investigate. It wasn't clear where it was coming from. It didn't seem to come from the boiler, and I...
Thanks for the replies.
Corgiman, you say the bang might be my three port valve - can you explain more...
Is my 3-port valve on the way out and needs replacing. Or is the by-pass on the system not letting enough "by-pass"?
Thanks...
We moved into a house that has got an Ideal Icos HE24 condensing boiler.
We noticed that sometimes when the CH clicks off, there is a bang in the pipes.
I assume that this is happening because residual heat in the heat exchanger is "boiling" the water in the boiler when the pump stops...