No Heat In Car Floor Vents Ford Explorer 2004

Have had vacuum lines checked by a mechanic and that was not it and we also replaced the blend door actuator.
No heat in car floor vents ford explorer 2004. We just bought a beautiful 2004 ford explorer with the center drop down dvd system for the back seat. It is stuck on defrost. I have a 2010 ford explorer. I got a remote and tu.
There are two one that controls hot cold. 2004 ford freestar maintenance repair. When air comfort controls are set to heat it blows cool cold air forcefully always when idling and sometimes when driving. No heat or ac 2001 ford explorer sport.
Heat blows cold in 2004 ford explorer 8 answers has 4 0l v6 engine. What can i do to repair it. Please send directions illustration on how to fix how to manually move from defrost to vent. Average repair cost is 150 at 102 250 miles.
The worst complaints are blend door in hvac system makes loud clicking noise broken blend door and heater not. I was told the little vent or flap the directs the air to the front vents was getting stuck. No air from floor vents or defroster vents only front vents. 2004 ford explorer that blows thru defrost when floor vents are selected.
The 2004 ford explorer has 2 problems reported for unable to change which vents air blows out. The system turns on loads the dvd and plays but has absolutely no sound. 2004 ford explorer ac heater problems with 113 complaints from explorer owners. Some air thru floor but most is thru defrost vents.
I have a 2010 ford escape that was doing the same thing ended up being the air door actuator. I get good heat and air conditioning from my front vents but when i select floor or defrost vents the air still only blows from front vents.