We have a Phoenix Victron Inverter (48/500) that powers a lighting circuit 200W. Its operation is intermittent, that is, it turns on one day, another does not, we do not know what happens. We cannot interrogate it with the Doongle because it does not give AC power. The system is made up of 8 100Ah / 12V batteries, 1 150 / 35A charge regulator and 48/500 Inverter. Please comment on how we can solve this. Thank You