Jayco 12BS popup electrical

[Teschman]

We have a 2013 12BS which was working fine until I plugged into a 50 amp service at my brother-in-laws using the 30 amp adapter. Everything is working on the 15 amp breaker but the 20 amp which supplies power to the AC and Fridge stopped working. The breaker did not pop, but I did reset it with no change. I check the fuses inside the panel where the fridge controls are located and they look fine. I have heard there are fuses on the inverter that you have to take off the front fuse panel to access. Could someone confirm or give me some direction as I have tried everything that I know of at this point to correct the problem. As I stated all the 110 outlets are hot and the furnace kicks on but the and Fridge aren't getting power. The fridge works on DC.