Vauxhall ASTRA Owner's Manual page 166

Air flow
Adjust with right rotary switch.
1 - 4 Manual fan speed setting,
intermediate settings are possible
A Automatic fan speed setting
x Fan switched off
Fan speed is regulated to provide the rate
of air flow necessary to maintain the pre-
selected temperature.
Select automatic mode for the highest level
of comfort.
When the fan is off, the air conditioning
compressor is also off.
To activate/deactivate air conditioning
compressor (cooling) n
Operate only with the engine on and the
fan running:
Press n
On =
Off = Press n again
Control indicator in the button.
When cooling (AC compressor) is active, air
is cooled and dehumidified. If cooling or
dehumidification is not desired, switch off
cooling in order to save fuel.
Cooling switches off automatically at low
outside temperatures.
Climate control
Manual air recirculation mode
The air recirculation system prevents the
entry of outside air and the air in the
passenger compartment is circulated.
Press button 4, control indicator in
button.
The exchange of fresh air is reduced in air
recirculation mode. The quality of the
passenger compartment air deteriorates
which may cause the vehicle occupants to
feel drowsy. In operation without cooling
the air humidity increases, so the windows
may mist up. Consequently, manual air
recirculation should only be run for short
periods of time.
To deactivate manual air recirculation:
Press button 4 again. The control
indicator in the button will go out.
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