ok input 1 isn't working properly, given your max figure, my suspicion is they haven't set up the dual tracker / parrallel tracking system correctly as IIRC 2.4kW is the peak output from one side by itself.
but I'm a bit confused by the voltage reading on Vin1
it will be simple enough to fix probably, unless there's another issue with string 1 developed as well
but I'm a bit confused by the voltage reading on Vin1
it will be simple enough to fix probably, unless there's another issue with string 1 developed as well