Fixing the error codes

[tomjay]

Please please help me to sort out how to fix the error codes on my inverter. It shows two error codes 03 and 04.

 

[MichaelK]

The first thing that comes to mind is not enough current coming out of the battery. The very first thing I would do is clean/tighten the battery to inverter terminals.

The battery wires in pic #2 look rather thin? What gauge are those?

 

[tomjay]

The wire size is 35mm2

 

[tomjay]

I have tightened the terminals as well. Still the machine shows the error

 

[tomjay]

it’s shows code 3 and 4

 

[MichaelK]

What is the voltage of the battery, tested with a volt meter? Looking at your pic, I'm not sure what the numbers on the inverter mean? Did the BMS shut down your battery?

 

[tomjay]

Voltage on battery is 13.13. Battery charging stopped after one hour