What year, make and model of class C do you have? What make and model is the air conditioner? Have you check the circuit breaker panel to be sure a breaker is not tripped? Do the lights work on the camper. You will need both 120 volts ac and 12 volt DC unless you have mechanical switches on the face of the air cond. Lets see if we can help you get the unit running and then we will address the leaking issue.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7