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M139_UM_usa1.book Page 143 Monday, September 1, 2008 2:39 PM
On starting the vehicle after stopping,
the various parameters are controlled
manually or automatically depending
on the options selected by the user
before turning the engine off. As a
consequence, all the manual
operations carried out before the
vehicle stop are memorized and kept
stored until the next start up.
This also applies for the OFF function;
if it were in the OFF position before
stopping, when next started the
system should still be in the OFF
position.
System deactivation
If the compressor is deactivated on
both the front and rear panels,
switching the air flow reduction
control 3 below the first bar results in
the fan switching off.
If the compressor is enabled on the
front and rear control panels, the air
flow reduction control 18 cannot
request flow rates below the first bar
(it will not switch off the fan).
When switched OFF, the heated rear
window button 11 and recirculation
button 9 are controlled normally
without activating the heating/ air
conditioning system.
Exiting the OFF status, the
recirculation will forcibly return to the
automatic mode.
Recirculation
This is activated when button 9 is
pressed and allows only the air already
in the passenger compartment to
circulate.
The recirculation feature has various
operation modes:
– Automatic (AQS) (LED on button
switched on)
– Forced closed recirculation (LED on
button switched on)
– Forced open recirculation (LED on
button switched off).
Automatic
In the automatic operation mode, the
recirculation is switched on when:
– the air quality sensor detects the
presence in the air of pollutants that
may enter the vehicle during traffic
jams, when driving in built-up areas
or when passing through tunnels.
– the compressor is activated, outside
temperatures are over 37.4°F (3°C) or
the speed is below 3.73 mph (6 km/
h), to prevent air polluted by exhaust
gas during stops from entering the
passenger compartment. When the
vehicle speed exceeds 7.46 mph (12
km/h), the system resets the previous
automatic control conditions.
When the compressor is deactivated or
outside temperatures are below 37.4°F
(3°C), the automatic recirculation
function is switched off automatically.
After prolonged operation (over 15
minutes), the system switches off the
recirculation function automatically
for safety reasons, allowing the
exchange of air once again.
Forced closed recirculation
In this type of operation, the amber
LED switched on indicates the
recirculation flap is closed.
Forced open recirculation
In this type of operation, the LED
switched off indicates the outside air
flap is open.
AUTO mode
When this button is pressed (one
button per zone), the automatic
system will take control of the
following functions once again:
– air distribution (for the side
concerned)
– fan speed
– compressor operation (with ECON
LED lit up)
– air recirculation function.
Air conditioning and heating system
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