Ideal Isar 24he combi boiler is loosing pressure with guage going near to zero over 7 days or so.
Recently tested that pressure was not lost in radiator circuit by turning off feed from and to radiator system using isolator valves for several days with system out of use.
Pressure went to near zero after this period but on turning isolator valves back on pressure increased. Radiator circuit seems to be holding it's pressure just fine so it looks like pressure is being slowly lost in boiler itself although there are no signs of water leakage on removing cover and inspecting components. Boiler works fine but concern is that weekly opening the topping up link to replenish guage pressure will eventually dilute the inhibitor and it's long term effectiveness. Any suggestions where problem is?
Recently tested that pressure was not lost in radiator circuit by turning off feed from and to radiator system using isolator valves for several days with system out of use.
Pressure went to near zero after this period but on turning isolator valves back on pressure increased. Radiator circuit seems to be holding it's pressure just fine so it looks like pressure is being slowly lost in boiler itself although there are no signs of water leakage on removing cover and inspecting components. Boiler works fine but concern is that weekly opening the topping up link to replenish guage pressure will eventually dilute the inhibitor and it's long term effectiveness. Any suggestions where problem is?
