FORD 2009 F-550 v.3 - Manual (Page 87)

Operating tips
• To reduce fog build up on the windshield during humid weather, place
the air flow selector in the position.
• To reduce humidity build up inside the vehicle, do not drive with the
system OFF, or with recirculated air engaged and A/C off.
• Do not put objects under the front seats that will interfere with the
airflow to the back seats.
• Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
• 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”.
During extreme high ambient temperatures when idling stationary for
extended periods of time in gear, it is recommended to run the A/C in
the MAX A/C position, reduce blower fan speed from the highest setting
and put the vehicle’s transmission into the PARK gear position
(automatic transmission only) to continue to receive cool air from your
A/C system.
For maximum cooling performance (MAX A/C):
Automatic operation:
1. Press AUTO for full automatic operation.
2. Do not override A/C or (recirculated air).
3. Set the temperature to 60°F (16°C).
Override operation:
1. Select air distribution.
2. Select A/C and (recirculated air). Use (recirculated air) with
A/C to provide colder airflow.
3. Set the temperature to 60°F (16°C).
4. Set highest fan speed initially, then adjust to maintain comfort.
2009 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)
Climate Controls
87