[Wardworks]

Looking for some trouble shooting advice. Drove our coach a few miles and returned home and parked it in the driveway to wash it. While washing it I heard an alarm inside (This coach has (2) Prosine 3.0 inverters) I found one with a 195 code on the display and the other saying low batteries. I tried to start it but the batteries were to low,
so I plugged it in and it started right up. I moved it behind our gate and plugged in for the night and checked on it in the morning. I figured the batteries would be all charged up and ready to go. Nope... Batteries weren't charged. I reset the inverters plugged it back in and let it sit for awhile, still not, charging so I put it on a battery charger and checked on it hours later. One inverter started up then went back to code 195 the other said the battery was at 12.8 volts. It showed shore power was connected and was charging. I did notice that it said +0.0 on the display but normally when its charging, it has some volts to it depending on how drained the batteries are. I thought its on so it should be good, came out this morning batteries are dead and both inverters are shut down with solid red lights on them.
Any idea where to start? I haven't had any problems before with charging or the inverters.