Chrysler Repair: No heat, chrysler town and country, coolant level

Question
I have a 2003 Chrysler Town and Country, 3.3 ltr.  My blower fan works fine, my coolant temperature gauge appears normal, my temperature slide control moves fine.  However, I have not heat.  I do not hear the vent flap(?) moving like I use to hear it when I move the temperature control slides.  Do I have a servo bad or could be a fuse or something else electrical?  Thanks!

Answer
Have you checked the coolant level.Even thou the temp is right there may not be enough coolant to get to the heater core.Its possible also that you may have a bad actuator.You can see them move from under the lt side of the dash looking towards the center.