My critical load displays high values but there is no critical load connected. The result is that the System is very instable in ESS mode. It swaps between maximum load and maximum charge every seconds with no end. The input load on L1 displays 0W but the critical load displays hight values but there is nothing connected. I assume that the internal input current sensor might be defect.
It is right that the critical load is the difference between the output current (transformer) and the input current (AC in)? Because I saw a block diagram with the positions of two current sensors. There is no current sensor at AC out 1 to measure the critical load. So the Multi must calculate this load of the two current sensors.
How can I check the internal input current sensor?