1993 Oldsmobile Achieva Owner's Manual - Page 116

Comfort Controls& Audio Systems VENT Use when outside temperatures are mild, and little heatingor cooling is With this system, you can control the needed. Air flow is through the ventilation and heating in your vehicle. instrument panel outlets. Set the center Your vehicle also has the flow-through control to the temperature desired. ventilation system described later in this BI-LEV (Bi-Level): Use on cool, but section. sunny days. This setting brings in the : The left knob sets the fan speed. outside air, but directsit in two ways. To select the forceof air you want, turn The cool air is directed to the upper the knob. portion of your body through the The fan is always running unless the instrument panel outlets, but slightly mode control is moved to OFF. warmer air is directed through the heater ducts and defroster vents.At Temperature Control: The center control regulates the temperature of the times this temperature differencemay be more apparent than others. air coming through the system. Mode Control: The right knob changes HEAT (Heater): This setting brings heated air through the heater ducts, and the Eunctions of your system. some through the windshield defroster vents. Climate Control System 3f If you have the optional engine block heater and use it during cold weather, 0"F (-18"C) or lower, your heating system will more quickly provide heat because the engine coolant is already warmed. See theIndex under Engine Block Heater. DEFOG: This setting divides air flow equally between the heater ducts and the windshield defroster vents. DEF (Defrost): This setting directs most air through the windshield defroster vents, and some through the heater ducts.