two string inverter only shows reading for pv1 shows zero for pv 2

[superk]

hi
i have a 4kw samil power solar river inverter.
when i log on it reading for pv1 shows zero for pv 2
i checked both strings with multimeter and both show simmilar readings.
just to note its like this even when im getting over 3kw

 

[newfutile]

That only shows just over 1KW being generated , possible DC isolator problems ?

 

[superk]

That only shows just over 1KW being generated , possible DC isolator problems ?

 

[superk]

it was a rainy cloudy day..i swapped the dc connectors over on the inverter still reads on pv1 nothing on pv2 so looks like both strings are working