Easysolar2 gx

hello community,

we have some problems with the easysolar 2 gx 48v3kw +paralell multi 2 48v 3kw
connected to 2 x us 5000c
battery at 75% not much solar comming in
without any error logs or overload alarms the unit switches the ac output disconnected
and a hub1 error
have latest software
any advice would be great as it seems there are more units with this problem

regards bert