Hi Kevin,
I think I wrote that reply before my 2nd cup of coffee! That setting initially fixed our breaker tripping issue, but I should have mentioned it was really a bandaid and not a fix. I don't recall whether inverter was set to on or off, but I now have the inverter "ground relay" set back ON in the settings anyway since eventually isolating a wiring issue.
I've made a bunch of changes to our AC distribution since installing the NL genset, and the real problem was finding and correcting a neutral wire from the inverter connected to the wrong BUS. I'd triple check your wiring first to ensure all is good there - in particular, put a spotlight on how your inverter is wired, especially neutral and ground connections. There's a good chance installations like gensets and inverters were not installed by Queen Long, so there is undoubtedly some wiring variation between owners.
Chris
S/V Beleza - H46 #44