Yesterday I have turned on my solar installation, and one of the problems showed up.
When inverter is working without grid connection everything is working perfect. No problem's at all. But when I turn on grid supply the warning #59 ACIN1 relay test fault.
Sometimes it's also showing warning #43 ground fault detected.
All this problems are when inverter is connected to the grid. Without grid all working perfect.
I have traced wires checked connections 10 times, polarity is totally fine, all grounding is fine.
Any help would be appreciated.