I have a dometic 2-way fridge in my '96 Gulfstream. Last year I had a few times when I had to reset the power button to get it to select AC when set on "auto". Now this year, it will not go to AC at all. It tries to go to gas every time. Is this a display.control panel problem, or a fuse somewhere? The manual talks of a "limp mode" but i do not understand it. Any suggestions as to what is wrong? what is the approx. cost of a new panel? Thanks in advance.