Mimipapa8

I have a 2017 Thor Chateau 31W

I am very new to the RV world and assume that I am doing something wrong. Upon disconnecting from shore power at my last stop, I lost 12 v power to my instrument panel as well as to the RV. Upon reconnections at the next location, I had power to all outlets. I did have 110 v power from the inverter as the refrigerator continued to operate while on the road. Any suggestions.