Two small points? One is what the actual age /date of the RV as it could be a new 2018 bought in 2019?
Should be a manual for the frig and likely a troubleshooting flow chart with the bag of info you got with the RV? If not an online check for manual may find one ?
Tons of good info to find what and where is here:
https://catalog3d.winnebagoind.com/menu/Parts.htm
But if a 2019, the inverter shows here:
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!