I have two questions. We just bought a new travel trailer and we also are concerned about the noise from the A/C. Is switching the sound from the tv to the radio easy to do? Also....my air conditioner fan never turns off. In our previous TT, we could turn the fan to auto or "on". This one doesn't give us an option. This one is digital; the old one was not. I can hear the compressor kick in and off, but the loud fan stays on. If we close the vent in the big square unit, very little air comes out the ceiling vents. Are we doing something wrong??? Thanks!