Originally Posted by the sludge
the whole syatem is 3.5 years old
the system water is a frothy whitish colour.
i havnt removed any casings lol, as underneath is the access to refill the sytem. thats alli have doen on it to get it back to 1.8 bar
where did you check for the colour of the water?
best off checking as low down on the system as you can
was all the pipework and rads installed with the boiler then?
still reckon its the pump
not unusual for a pump in a combi to last shorter than an open system pump as it is start stop start stop all the time (as it runs with hot water demand too)