MPPT issue
I have 2 strings of panels. One with 5 panels, the other with 6. Almost every day MPPT1 hovers around 250v and MPPT2 at 300v The currents are usually the same, up to may be 5A on a bright day.
However, a couple of times I notice the MPPTs sticking completely flat all day. One at may be 200v and the other 290v. As I say they are completely flat. There is often a big difference in currents in this mode.
If I switch the PV breakers off and back on I usually find normal 250/300v levels return with the actual voltage hovering around. Anyone else seen this? Any suggestions? 5.5kW Ecco inverter with battery ( at abut 50%).
27 Views