[RMcNeal]

Ponder, I also have a residential fridge but my unit is a 2019 3791RD. With mine, I have the inverter mounted on the ceiling of the basement with an automatic transfer switch plugged into it. If you have an automatic transfer switch, can you test to ensure that you have 120vac going into and out of that? I have read of some issues with the automatic transfer switches.
I know the wiring is different on the newer rigs as well as having solar, etc. so not sure where you auto transfer switch is located. If you can find the inverter, trace from there and you should be able to find it.