currently awaiting sumone to come out to see my boiler which is looking like friday! anyways just though id put this question across? the boiler being a volkera linea 24, i have problems with pressure loss, still not sure whats the cause, now i was loosing pressure over a few days from what i could tell, now when the pressure was low 0-0.5 the boiler would still operate. isnt the boiler meant to stop working below 0.5bar, guessing theres a pressure switch that would cut this off. just wondering if i could have a faulty gauge, at the moment i know the pressure vessel has gone possible to over pressurizing?