I hooked my 8 400w Canadian solar panels in series and could only get volts no wattage in the #2 mppt on 18k. I then tried to just hook up 5 panels in series on the ground just to make sure it wasn’t something with the wiring on roof. Im still only getting volts. I double and tripled checked. Not sure if there is something to do in the inverter or what. I changed the pv input to the mppt number I plugged into. Having 5 panels hooked up on the ground is pretty fool proof I’d think. At a loss. I tried mppt #3 with same results. Not sure what else to try.