97 Dometic fridge question

[Traveling_Teech]

Hello. I have a 97 model 5th wheel with a dometic refrigerator. There is an ac light right by the on/ off button and there is two other lights by the other button. Auto. Gas. When I am plugged in to shore power the auto and gas lights are lit I push the button and it changed to just gas.....I was confused because when I switched my battery charger breaker off then I pushed the button again with both lights lit and it changed to just auto but then the AC light came on as well. My question is why if my battery charger breaker is off am I able to run fridge on AC . I suspect that it does not run through the breaker at all then correct? That is what I concluded. But my main question is then why if I'm set to auto did I have to turn off the battery charging breaker of my converter and then push the button in order for it to turn to AC mode making the AC light turn on? It would not otherwise get ac mode to turn on. Please help me clarify. I greatly appreciate it.

[Traveling_Teech]

I figured it out it was wired to my other breaker thanks kinda feel dumb now

[donn0128]

Set it on and auto. It will automatically select the best available fuel source. Electricity being the default. Of no 120VAC is available then it will switch to gas. If on auto it is running on gas then I would suspect no 120VAC is available. Check your breakers, and follow that by checking for 120VAC at the receptacle the refer is plugged into.