Mine died a while ago, shipped if off for repair, came back unrepairable. I believe that it was the transfer switch that failed so I now have a 2KW puresine wave inverter that won't pass AC and won't charge the batteries.
It's about the only one that charges at 100A and fits the space I have so I went searching and found a "reconditioned" one online for $650.00. Working fine so far. The old one is sitting in my ham shack while I ponder connecting it to my battery bank there.
They are a great unit when they work. Too bad the service has gone for a s***.