I have a system with two similar MPPT from Victron, 250/60 connected to a Venus device via Ve. direct. Each MPPT has its own string of pannels. I noticed that very often one of the MPPT leaves float with no apparent reason... checking more deeply, it seems it goes OFF!!
I'm worried that it might be faulty.
I've changed everything that I can remember and swapped strings. The reseting continues to happen in the same MPPT controller. See graphs:
Just one or two OFF states are manual made by me, but check the number of times the MPPT  goes OFF with no apparent reason... the other one, 258 is normal in float state after 12h00.
Now, I add some more information from other parts of the system, and I noticed some worrying sign - the surge in current on the  MPPT right before it goes off:
And I do see some peak in AC side, but which AC is this? Other AC graphs don't show anything:
On these other AC graphs, it shows no peaks - 261 is my Multiplus Inverter:
I know the resolution might not be good enough to take serious conclusions, but... what can I conclude from all this?
I never saw similar rebooting on the  MPPT. All OFF states on the graph are manual, made by me while changing something. Any help or ideas is deeply appreciated...