20 Most Recent Dometic Rooftop RV Air Conditioner - Page 3 Questions & Answers

I think you checked voltage across the run capacitor, the brown and white wires. The voltage to the motor would be on the black and white wires And inside the motor, a thermal protection device opens the black wire, leaving no potential voltage to the other voltage line nor capacitor line ( brown and white are the same line).
The solution, varify that the motor is wired correctly, then that the capacitor value is correct, not weakened, that the motor vent holes are not blocked or obstructed, that the motor amps are not exceeded, that the motor bearings have no side play and not worn.
Before replacing the motor, make sure the wiring is correct, the motor and capacitor are not good.

sounds like it is miswired. actually try fan on with the heat on and see if the fan works. If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

could be motor, could be the wheel. probably needs a new wheel anyways. replace both. If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

possibly your fresh air intake from outside, what is stored or going on outside or on the roof?? If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79