I have a 2006 Cayman and had the same problem, Tom is correct with Monaco Goof comment. Indeed the refrig is powered thru the GFCI, which is locted in the bathroom. if you reset it and it agains trips sometimes quickly other times after minutes or hours, check the 2 120vac heaters that power boiler in the refrig. As I had, you may be experiencing a complete or slowly deteriorating heater element. Both of them can be easily checked by unplugging from 120vac and checking resistance between the 120v leads (check both) and the outer shell of the heater element. You should have 0 ohms or infinity. The slightest of resistance indicates a dead or dying heater, Got to be replaced. The resistance between both 120v leads should as memory serves me is 45-75 ohms. You should see a no A/C fault on display panel on front of refrig. I assume that you see that as it is driven by the 12vdc circuit.