I've had my system set up for a year now. No problems. Using CerboGX with Touch50, Smart Solar 250/100, Multiplus 48/5000 and a battery bank of 4 Pylontech US3000.
Looks like I've encountered my first hiccup. I have the touch screen display for my cerboGX, and check it every so often. Today I noticed the MPPT was not sending any more electricity to the batteries. It seemed to be treating 88% charged as if it were 100%. I confirmed this by running a pump in the house. The sun was shining outside. When the pump was on, I could read the (-) amp draw from the battery bank, and when the pump cycled off, the MPPT compensated accordingly and sent an equivalent amount back to the batteries, until it reached a full 88% charge again. Battery health on the monitor states 99%.
I certainly haven't changed any settings lately. Actually, I haven't made any modifications since the installation one year ago. The only thing I can think of that might be causing this is about a week ago, I was moving a floor fan in the room, and the back of it accidentally touched the switch on the inverter, which turned it off. I turned it back on promptly. Maybe I've been having this problem since then, but can't say, because today was the first day I payed attention to the display since then.
What do you think is causing the system to treat 88% charged as if it were 100% charged? It will not go above 88%. The six LED charging indicator lights on the front of the batteries also only show 5/6 lights illuminated.