I've only recently begun to travel with my new Landmark. I found out right away, on the first day of travel that the refer was NOT working. The GFCI outlet was tripped on the inverter. Reset it, refer came back on.
Next stop, refer was OFF again. Reset GFCI outlet, refer came back on.
Stopped for the night - refer OFF
Played this game for 4 days of travel to get home from Indiana to Colorado.
Note that before we brought the RV home, we had left it in Indiana for a month (hooked up at a CG). I had added a receptacle in my coat closet to power my network gear. I powered that receptacle off the unused outlet on the Inverter GFCI outlet. This meant that my Inverter was working 100% of the time (to power the network gear) - as planned.
To start troubleshooting, I unplugged the network gear circuit from the Inverter at the end of the first day of travel. No difference. on subsequent days - still tripping. This means that the network power receptacle, wiring, junction box and power cord I installed was NOT contributory to the tripping of the GFCI outlet.
So while it "appears" that the GFCI outlet in my inverter is at fault, what is troubling is that the GFCI outlet never tripped while connected to shore power for that month we were storing the RV at the CG. I knew this as I still had remote connectivity to the network gear.
HL has shipped me a replacement inverter. If that is the fix, then I will replace the GFCI outlet in the current inverter and use it as a spare.