Volvo 780 Owner's Manual page 25

Volvo 1990 780 Model
Air louvers (dash)
A Open
B Closed
C Directing air flow horizontally
D Directing air flow vertically
A certain amount of air will always enter through the dash air louvers as long as they are open,
regardless of the position of the air distribution control.
Close the dash air louvers to obtain maximum air flow to floor or windshield.
pg. 22 Heating and ventilation (cont.)
ECC - Electronic Climate Control panel
Fan
0=off
5 = max speed
aut = fan speed automatically regulated
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Function selector
Set desired function
This button should normally
be in the aut position.
Temperature dial
Set desired
temperature