Thanks for the additional information. That helps.
First, pull the switch from the wall, use a voltmeter or 12 volt test light to check for voltage into the switch. If it is there, test for output from the switch when it is turned on. If it is there, go to the motor input and test for voltage at the motor input. If it's there, it's probably the motor. There may be a limit switch that protects the system that has opened, there may be a sensor that has failed. Try turning the motor armature slightly to see if the switch will then operate the motor.
If there is no voltage at the switch in the first step, then work "backwards" toward the battery, testing the wiring and checking for fuses. Every circuit in your RV is "fuse protected" or "circuit breaker protected" so somewhere, you'll find a fuse, maybe in the wiring loom maybe in the fuse panel.
With the age of your RV. Is it still in warranty? If so, or if you aren't comfortable doing the testing/troubleshooting, you might be better off contacting the dealership or a mobile RV service.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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