System press dropping 3bar>1 within one hour of c/heating switch off? checked all valves 4 leaks ok. is there a pressure holdin bladder or like device???? Can i prove internal/external fault using flow valves under boiler???? Press drop 3bar>2 over 3 hours c/heating running????

jason lynch, January 2007

yes fill system to say 2 bar turn off valves let stand for a few hours does pressure stay up then open valves does pressure drop. u can tell from this witch is leaking

paul, January 2007