juram74

Thanks @Coulomb, everything went well, hopefully it will work like the original 3KW version.

The rack mounted Kings only have the small, internal, non-removable display Inverter and display are working correctly but overload monitoring does not work and the load percentage shows for 5KW . I have to be careful not to overload it because the internal fuse would then have to be replaced. I will try to update the inverter during the week.

Thanks. So I guess I'll have a problem. The previous user uploaded the firmware for 5KW/48. The firmware is version 71.97, He wrote that the previous one was about 56.xx Can I not downgrade? For example, direct access using other interfaces and software?

Hi guys, Don't know where to download it? It is this type: Rack Inverter 3000W 48V Voltronic Axpert King-Solar Installation (todoensolar.com)