We have an Encounter. Ours is the 2011 37TZ model.
Leave the thermostat in the bedroom off.
Set your temperature on the thermostat in the hallway.
Our vents, one each, kitchen, living room, bathroom, bedroom all get some warm air. The kitchen and living room get the most but the bathroom gets quite warm since it's a small room. The bedroom gets only half of the volume coming out of the other vents. This works okay for us though I did put a slight restriction in the vent in the bathroom. If you don't get any air from the bath and bedroom I suspect the ducting is off. Not unusual in a new coach to find things like that.
If you're handy pull out some of the lower kitcheon drawers and look for the duckwork, very easy to find. See if you can get to the disconnected part; also check to see if the duct is bent or crushed by something else.
FYI in our coaches the air conditioning comes directly from the two A/C units in the ceiling to the ceiling vents and has nothing to do with the ductwork for the furnace. You may be interested to know that the A/C ductwork is all connected, front to rear.
Gary, Cindy, Reacher (Maine Coon), and Vivian (in spirit only now).
Retired: July 31st, 2013 and loving it.
2011 Coachmen Encounter 37 TZ pulling a 2012 Wrangler Unlimited Sahara. Many upgrades, additions, mods, and changes.