I noticed yesterday that my a/c would only work in normal mode. When I hit the Max ac and recirculate buttons, they lit up but blower remained the same.
This morning was the same. It was working a couple of days ago so I'm guessing a switch. Any ideas on what I need to be looking for?
(2014 F150 XLT 5.0) Thanks,

 

Check the blower speeds while in the heat mode and see if you have all the selection speeds.
The blower motor resistor/ module is a common failure on these trucks and you loose some speeds.
I'm not sure how it reacts with the a/c.
​​​​​Just that it may not be the switch.

 

Switching the inlet between outside and recirculation makes no change in the electrical functioning of blower motor. Since most systems have much lower resistance while in re-circulation mode, the blower motor, for the same amount of electrical power, moves air more rapidly making outlet airflow stronger.

Most likely, your recirculation door is not working.

 

Is there a fuse for the fresh air damper motor? Apparently, its in the motor itself.

 

No individual fuse.

Could be the motor, the HVAC module that drives the motor, the wiring, or the door is broken or jammed.

Good luck!

 

Apparently it's the fresh air damper motor. Does anyone know if this part is available at Auto Zone or O'Reilly's?

 

/////AutoZone or O'Reilly AUTO PARTS web site should (know).

Google and search 'em.
..

 

Use a Ford part!