I have an 2006 Mark LT and I am having a/c problems. Just wanna see if anyone has any ideas what it might be. It blows hot and cold and the recirculation door is working. The problem is the air is blowing out all the vents. It dont matter which button I push (floor,vent,defrost,etc) it never changes. The best way to run it right now is in AUTO. Any idea what the problem may be or any way to trouble shoot it? I'm leaning towards the control head. Is there anyway to fix or trouble shoot it? Thanks for any help.

 

Good morning all, one more question. I have read through 1000's of threads about a self test you can do on the EATC. Does this test apply to the 06 Mark LT. I tried do the test I found on here but it did nothing in my truck.

 

Hey,

After an hour of searching, I finally found someone with the same problem that I'm having, but I was disappointed to see the problem hasn't been solved.
One thing I'm seeing could be the issue is the dash/defrost door either stuck or the motor broken. I just found the location is right next to the gas pedal.

I'm going to take a look at it tomorrow and see if the head unit is sending power to the motor.

 

Good luck, I never figured it out. Still blowing out all the vents. Takes just a little longer to defrost.