Refridgerator and water heater will not come on.

I have a 2005 Fleetwood Bounder 32W. Last week I went out to set it up and get it going. (All was fine 2 weeks prior) I noticed that the refrigerator did not power on when I hit the button. I checked to see if the power switch was on, and it was. Additionally, I noticed the light inside did not come on either. I went ahead and tried to fire the water heater on gas, I tried twice and simply went to Eletric and went on my way, never doubting that the water was heating. The next day I went back out, checked both the AC, and the DC power inside the panel outside the vehicle, both were good. I checked the fuses, both were good. I also cycled the breaker, the power disconnects, checked all the fuses (that I can find), insured that the batteries were charged and that its fuses were good. ---I went to rinse my hands inside, and no hot water. So I am at a loss.
I figure that the issue is a common power source, and likely on the 12v/DC side, otherwise I have no Idea were to start. Has anyone had this experience before? I would greatly appreciate any assistance. So far this month I have had to turn away 2 buyers, and a potential renter due to these issues. Thanks in advance.