Last weekend the Dometic AC unit stoped working. It would run for about 3 minutes blowing cold then it would sound like the unit was struggling and it would trip the breaker. So I turned it back on to test the amperage that it was drawing while running at first it was staying around 17 - 18 amps then when it started to struggle it was at 34 amps till it tripped the breaker. Long story short I tested the unit on the roof everything seemed fine but I did end up replacing it since it was a older unit. I know have a Dometic Duo Therm Brisk II Air 13500 with a new control panel. This unit did the same thing as the previous unit. I tested the power coming into the camper its 115 volts. I'm not sure what can be causing this, any help will be greatly appreciated thank you.