Hello, I am using a Victron set up with BYD batteries. I have a ccgx with Quattro 48V|8000va|110amp. I have 2 BYD Boxes with a total of 20kW. The system had been working great since early 2020 and recently it started shutting off randomly with now errors recorded. So I read on the forums that some had issues when the VE.Bus going to the inverter would shut the system down when plugged in. So, when I could not get the inverter to turn on at all even with a reset I unplugged the VE.Bus network cable and it turned right on. I live in Zambia so I did trouble shooting with my supplier from South Africa over WhatsApp. We went through many different scenarios. We unplugged everything from the back of the ccgx and left the power cable connected and shut off the supply of power from the solar arrays. With the VE.Bus plugged in and connected to the inverter the system now came on. When I plugged in the VE.Can going to the BMS for the BYD the system again shut down. I connected everything back and whenever the VE.Bus and VE.can were both plugged it would go off. But if one or the other were unplugged it would run. I tested the network cable from the VE.Can to the BMS and it seemed to be okay. I swapped BMS's as both BYD boxes come with one and so I had a spare and it did the same, shut off. I tried with just 4 of the eight batteries and set the fuse addresses to the correct setting and it still shut off. I tried with just one battery and it still shut off. At the end of the day before the sun went down I connected everything back together and surprisingly it worked perfectly fine with VE.Can and VE.Bus plugged in to the BMS and Inverter. Now it has been 2 days and it is working fine. I just want to see if anyone may know what was causing my problem in case it starts happening again.
