1996 Chevrolet Astro Owner's Manual - Page 121
1996 Chevrolet Astro Manual
Page 121 highlights
BLEND - With this setting, the heated outside air comes out both the heater vents and defroster vents, with some air coming through the side window vents. Adjust the temperature lever for warmer or cooler air. This setting is useful for cold weather with a large number of passengers or very humid conditions to help keep the windshield clear. The A/C compressor may operate in this setting to dehumidify the air. HTR (Heater) - Most of the air comes out near the floor. The rest comes out from the defroster vents under the windshield and at the front side windows. This is best forcold weather. VENT - The air comes out at the vents on your instrument panel. The air conditioner will not run. Adjust the temperature lever for warmer or cooler air. BI-LEV A/C - With this, outside aircomes out through the heater floor vent and the instrument panel vents. If you move your temperature control lever between cold and hot, cooler air will come out of the upper vents while warmer air comes out of the floor vent. This setting is useful in cool weather with bright sunlight. NORM A/C - This setting coolsthe outside air. If you first used MAX A/C, use NORM A/C as soon as the vehicle has cooled down, so outside air will be going through your vehicle. MAX A/C -This cools the air the fastest. Move the other lever all the way to Cold. MAX A/C lets in only a little air from the outside. You can use MAX A/C at first when it's really hot outside and you need to cool off quickly. BLEND is on, you may notice a slight When the air conditioning, defrost or increase or decreasein engine speed, dueto compressor operation. Engine Coolant Heater (Option) If you use the optional engine coolantheater before starting your engine, your heating system will produce warmer air faster to heat the passenger compartment in cold weather. See "Engine Coolant Heater" in the Index. Rear Heater (Option) You may have the optional rear heater. The three speed fan switch is above the radio. Slide the lever toward HI for warmer air in the rear area. Move the switch to OFF to turn the system off. 3-3