Solar input low

I have a AC200Max with 3 200w panels (Bluettii). When all are connected in bright sunlight my input is only around 160w. Am I doing something wrong? They are connected the only way possible….please help!!

Please provide the detailed parameters of the panels and how you connected them? Pictures showing how you connected would be better.


Here’s what I have

The first panel black is connected to the base. The red is connected to the black of the second panel. The red of the second panel is connected to the black of the third. The red from the third is connected to the base.