Honda 1991 Accord Wagon Owner's Manual page 51

Air Conditioner Switch
With the fan on, push the A/C button to operate the air conditioner.
The indicator light will come on.
Push the button again to turn the air conditioner off.
Fresh Air (
When the
outside air will be circulated inside the car.
When the
outside air is shut off and the air inside the car is recirculated.
If the heater or air conditioner is on and you want to warm up or cool
down the interior more quickly, or keep smoke or dust out of the car
without losing the heat or cool function, simply push the
button.
NOTE: The windows may become fogged if the system is in the
setting for an extended period of time with the air conditioner
off. As soon as the interior is warm, switch to the
How to Use the Controls
To Ventilate
Turn the temperature control dial counterclockwise and push the
and
through the corner and center vents. To change air distribution,
switch to the
heater ducts at the floor level.
) and Recirculation (
button is pushed, the indicator light will go on and
button is pushed, the indicator light comes on,
buttons. Switch the fan on and outside air will flow
position and outside air will also flow from the
) Buttons
setting.