Messages

I just recently bought a Pioneer 2003, model 19T4 and it has ceiling vents inside that are for the A/C I think. I have had other RV's that had ceiling  vents and they worked off the A/C. I turn the A/C on and it only comes out the unit. No air what so ever out the vents. I closed the units 2 vents as much as you can and still nothing. Can anyone let me know how to get these to work or what they are for? Thank You. [email protected]