Hi I have a multiplus 5000va ive had this system installed by an electrical contractor for the past 6 years. Until recently I had no problems. its the old Carlo Gavazzi meter with the three terminals on the bottom for monitoring via the mbus usb cable. What happens is it constantly dropped pv inverter from the ccgx. So I tried everything which failed, brought a new CT sensor wired it in today and the pv is back. however it still does not appear to be charging my batteries from the sun.
I will test this further tomorrow but any ideas what's happening?