Kelley, The A/C runs off 120v only. Anytime your plugged into 30 amp shore power the A/C should be able to run. On some units the A/C cord is in the bath area and the GFI outlet may be kinda hidden. If it's plugged in, and won't come on, check that GFI to see if it's tripped. Older units had a coiled wire from the A/C, down the street side and had to be plugged in after raising. Mine is in the master bedroom upper cabinet. A power outlet cover is in the bottom of the cabinet and the outlet is near the floor. The A/C cord is usually gray in color.
Operation is simple. On the unit, the left knob turns the unit on (low-med-high-off) and the right knob controls the temp. Some A/C's had an optional heat strip installed allowing for heat via the A/C.
Hope all this helps, let us know
Tree