I am getting Err 39 when I connect the solar panels to the controller. I discharged the batteries to make sure they would take a charge. Configuration consists of 4 100Ah Li batteries connected to a Magnum 2KW inverter connected to the MPPT connected to 4 250W solar panels wired in parallel series so I'm getting 65-70 V at 18 A. Looking at the app, I see the voltage on the battery side is 13.1V. As soon as I connect the panels to the MPPT, the MPPT kicks the Err 39. I have 12V set in settings for battery voltage as well as Li set for battery type. Is it possible that I need to set the battery voltage setting to 24V?
