Can some one explain voltage on pv 1 there are no panels connect. Off grid only panels on mppt 2. Thank you for any insight or explanation. I have turned off Growatt 8 SPF splt phase dual mppt. I turned off battery,panels and unit waited 5 minutes then restarted. Has solar assistant hooked usb to inverter usb.Only powering 1 mini split ac. Thank you for reading. I am feeling stupid.