I have a standard Off grid solar configuration been running with it for 4 years now. Since the last thunderstorm, my Multiplus is not charging through AC-IN connected to my Diesel Generator but is charging through the battery input.
While my multimeter read 230 on AC-IN VE-Configure read 0V when the Diesel generator is ON.
How should I proceed to investigate further the root of the problem ?
A friend of mine suggested to it might be the relay is KO but i don't know how to test it and if I can replace it.
Thanks in advance!