Our Phoenix inverter 48/3000 is giving low battery alert even if our battery are fully charged.
We have 4 batteries 12V/90Ah gel connected in series. Last measure of the total voltage is 54,3V measured at battery input terminals of the Phoenix inverter.
I already checked the connection between batteries making sure that there are no high currents due to poor contacts between terminals and nuts are well tight. The inverter keeps clicking internally.
Moreover, if I have only the batteries connected to the inverter I have a blinking lighton low battery. Once I connect the solar strings that light disappears ( if the irradiation is low sometimes keep blinking even with panels).
What do you advise?
