I'm a graphic designer not a plumber....
From the beginning:
There is a problem with the boiler giving hot water. It seems the boiler is confused, so am I.
When opening the HW tap the pressure is sometimes very low. The boiler does make a click sound but will not heat the water...
I have problems with the hot water pressure and plumber had a look at it and told me the pressure vessel doesn't give a right signal. It signals it has plenty of hot water but doesn't.
I'm looking for a HOT WATER EXPANSION VESSEL - UP TO 3.2 BAR for the Potterton combi 80. Potterton doesn't make this part anymore.
Does anyone have a tip where I can find this part, new or reconditioned.