Blend door actuator fixed, then broke again

[GT2000]

So i replaced the blend door actuator (automatic climate control) on the explorer cause it would only blow heat. So i went for a drive, and yay, its blowing fresh air, not heat, after a few minutes of driving (keep in mind it was warm already) it went from fresh air, back to full heat randomly, and suddenly, and will not go back now, i tried unplugging the blend door again, no change.

 

[410Fortune]

Since you have the electronic group have you tried a reset and check for codes?
Anytime you change the bled door motor you have to do a system reset

With the blend door motor off use a dental mirror and flashlight and look at the axleshaft your bled door rides on. Is it cracked? in pieces?