Folks - I am in posing on behalf of a friend’s installation. I assisted with an installation of this inverter earlier this year and all has been working ok. 
The property where it was done was subject to a five day outage as there was a cable fault in the area. 
The batteries (Dyness B4850) are completely discharged and the inverter refuses to charge these. 
is there a procedure to kickstart the system into charging it up. 
Because of the comms issues with the Dyness and RCT - the batteries are connected in USE mode. 
I’ve tried unsuccessfully to restart the system. What is interesting is that the inverter briefly reads the voltage of the batteries and thereafter the battery voltage display goes to zero. I did not have a multimeter with me to verify this. 
Will send  displays  to verify what is being shown

would really appreciate any assistance to get the system recovered 

Vaughan 

 

 

 

Here are the displays 

 

 

high inrush current and bms does not start

Have you had specific experience with this fault? The inverter is set to USE mode for battery type - the comms cable is not connected. 

Have you tried lowering the charge current to test? Perhaps set it down to it's lowest setting (10A) to see if it starts

will Try knocking back the current to 10A to see if it will start charging 

The only way the system was recovered was to insert fully charged batteries into it. The batteries aa were fully discharged will have to be taken to the agents to get them kickstarted.