1999 Ford F150 Owner Guide 1st Printing - Page 58

Controls and features Manual heating and air conditioning system (if equipped) LO OFF PANEL & FLOOR FLOOR FLR & DEF DEF PANEL A/C MAX A/C HI COOL WARM Fan speed control Controls the volume of air circulated in the vehicle. LO HI Temperature control knob Controls the temperature of the airflow inside the vehicle. COOL WARM Mode selector control Controls the direction of the airflow to the inside of the vehicle. PANEL A/C MAX A/C OFF PANEL & FLOOR FLOOR FLR & DEF DEF The air conditioning compressor will operate in all modes except PANEL and FLOOR. However, the air conditioning will only function if the outside temperature is about 10°C (50°F) or above. Since the air conditioner removes considerable moisture from the air during operation, it is normal if clear water drips on the ground under the air conditioner drain while the system is working and even after you have stopped the vehicle. Under normal conditions, your vehicle's climate control system should be left in any position other than MAX A/C or OFF when the vehicle is parked. This allows the vehicle to "breathe" through the outside air inlet duct. 58