FORD 2013 F-550 v.3 - Manual (Page 148)

Distributes air through the instrument panel vents, floor vents,
and demister vents.
Distributes air through the floor vents.
E. A/C: Press to turn air conditioning off and on. Air conditioning cools
the vehicle using outside air. To improve air conditioning when starting
your vehicle, drive with the windows slightly open for two to three
minutes.
F. Recirculated air: Press to switch between outside air and
recirculated air. When the LED on the button is lit, the air currently in
the passenger compartment is being recirculated. Using recirculated air
can reduce the time needed to cool the interior and reduce unwanted
odors from entering your vehicle.
G. MAX A/C: Distributes recirculated air through the instrument panel
vents to cool the vehicle. This position is more economical and efficient
than normal A/C.
H. Temperature control: Controls the temperature of the air circulated
in your vehicle. Turn to select the desired temperature.
I. Fan speed control: Controls the volume of air circulated in your
vehicle. Turn to select the desired fan speed or switch off. If you switch
the fan off, the windshield may fog up.
J. Power: Press to turn the system off and on. When the system is off,
outside air cannot enter the vehicle.
Climate Control 147
2013 F-250/350/450/550 (f23)
Owners Guide gf, 3rd Printing, December 2012
USA (fus)