I called them about it some time back and they wanted me to jump through hoops to get started with finding out what the problem was.
I have delt with them on another inverter that just had a simple communication board go bad and almost 6 months later and countless emails and phone calls I got the problem resolved. I don't think I want to go through that again. I will probably just replace them and save 6 months of time and aggravation. I can flip the solar disconnect for now and then all the chargers work great, so I will probably do that until I can replace the units.