FORD 2012 F-550 v.3 - Manual (Page 81)

• To improve the A/C cool down, drive with the windows slightly open
for 2-3 minutes after start up or until the vehicle has been “aired out.”
• A small amount of air may be felt from the floor vent regardless of the
air distribution setting that is selected.
If you are driving during extreme high ambient temperatures and idling
for extended periods of time in gear, it is recommended to run the A/C
in the MAX A/C position, adjust the blower fan speed to the lowest
setting and put the vehicle’s transmission into the P (Park) position to
continue to receive cool air from your A/C system.
For maximum cooling performance (MAX A/C):
1. Select MAX A/C.
2. Move the temperature control to the coolest setting.
3. Set the fan speed to the highest setting and then adjust as necessary
to maintain comfort.
• A/C and
(recirculated air) will be automatically selected.
• Airflow will automatically be directed out of the panel vents.
To aid in side window defogging/demisting in cold weather:
1. Select (panel/floor).
2. Select A/C.
3. Adjust the temperature control to maintain comfort.
4. Set the fan speed to the highest setting.
5. Direct the outer instrument panel vents towards the side windows.
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
Climate Controls
81
2012 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)