No power for pv panels

I have 4- 100w eclipse panels,commander 40a controller,2k inverter,mt-50.
I have 10a in-line fuse @ panels 20a anl
My system was working yesterday and today not charging. It doesn’t show any faults shows every thing is ok. I have power and light on charge controller for the batteries but no light for the PV. If the 10a fuse at the panels is blown will it make a fault or is it just something I need to change out to make sure.

no error code or fault if the panel(s) are disconnected or fuse blown.

If all 4 panels are in series then 10A is big enough if they are all parallel then it is not.

I say you blew the fuse.... 10a is to small you need a 40a......

Thanks I do have them run in parallel. I do have a question about the inline fuse at the panels where could I buy a 40 a online fuse I’ve only seen them up to 30a or do you think the thirty is enough.

if the panels Imp on the back is ~6A, then 4x6A = 24A, if the wire size is 10 gauge then 30A max based on wire size.

Go to a local high end Stereo shop.... My local shop has them up to 100a....