I connected 2 multiplus compact inverter/charger in parallel.
i configured it correctly , my problem when grid off , inverters return power to AC-IN line and to the all main table of electricity ,
multiplus 1600/24 ,
i use 4 12v 200ah batteries ( power bank 24v 400ah ),
2 inverters upgraded to the last FW.
i tried to disconnected the system and reset setting and turn it in stand alone mode and the same problem ,
i tried to downgrade FW and the same problem ,
can anyone find solution for me ( note : one of the inverter when grid off and on make big noise for seconds then sound normally , i check my connections its right ,
i have main table , and loaded divided to switches , one switch for ac in and one for ac out ,
i connected wanted load to ac-out , ac-in switch go to roof shed to switch breaker that feed ac-in 1 and ac-in 2 , ac-out 1 and ac-out2 go to switch breaker and then to main table connected to ac-out switch , but when grid off - the inverters feed the ac-in lines and unwanted load.
pls help