Septain21

Hello, I do have a clone of AXPERT MAX II 2 MPPT on which I have installed firmware 90.09 with 200V. So you advise me to install firmware 556.05.

it's a II version with twin. My main (U1) is 90.09 with 200V and I have no problem with 90V blocking but I installed 2 additional panels on a string which total 300V Vmp

Good morning I have a clone of the Voltronic inverter or rather the AXPERT MAX 10KW 2 MPPT. I have 2 strings of panels, one of 200V max and one of 300V. What firmware should I use? Thank you for your feedback and have a nice day

Hello For my case, the inverter connected to utility in battery power consumes 50W/h to operate when the panels no longer provide the charge. I had to install an automatic circuit breaker that turns off the power supply to the inverter when the batteries reach 52v and engages it at 50v.

I read that manufacturers protect their product against copies. Perhaps the eeprom error is the consequence of this by a response to a non-compliant internal query.

Hello I switched to firmware 90.09 a few days ago and I notice increased efficiency both during gray days and bright sunshine. The production curve is more linear than before. Only problem I have an eeprom fault return but the solar inverter seems to work well. Is this normal or should I reflash?