"Air Quality System" (Aqs) Function - CITROEN C5 AIRCROSS Handbook

Ease of use and comfort
"Normal": offers the best compromise between
a comfortable temperature and quiet operation
(default setting).
"Fast": provides strong and effective air flow.
Use the "Normal" or "Fast" modes to ensure
the comfort of passengers in the rear seats.
This setting is associated with automatic mode
only. However, on deactivation of AUTO mode,
the indicator lamp for the last setting remains
on.
Changing the setting does not reactivate AUTO
mode if this was deactivated.
In cold weather with the engine cold, the
air flow is increased gradually until the
comfort setting has been reached, in order
to limit the delivery of cold air into the
passenger compartment.
On entering the vehicle, if the interior
temperature is much colder or warmer
than the comfort setting requested, there
is no need to alter the value displayed
to more quickly reach the required level
of comfort. The system automatically
corrects the temperature difference as
quickly as possible.
66
Automatic visibility
programme
For more information on the button 1
"Automatic Visibility Programme", refer to
the section "Front demist – defrost".
"Air Quality System" (AQS)
function
Using a pollution sensor, this function
automatically activates recirculation of the
interior air once a certain level of polluting
substances in the exterior air is detected.
When the air quality returns to a satisfactory
level, recirculation of interior air is automatically
deactivated.
This function is not designed to detect
unpleasant odours.
Recirculation is automatically activated when
the front screenwash is used or when reverse
gear is engaged.
The function does not operate if the exterior
temperature is below 5°C, to avoid the risk of
misting of the windscreen and side windows.
To activate or deactivate the function, go
to the secondary page by using button 11
"OPTIONS", then press button 15.
Manual control
You can manually adjust one or more of these
functions, while retaining automatic control of
the other functions by the system:
- air flow, button 5,
- air distribution, button 7,
As soon as you change a setting, the indicator
lamp for the button 10 "AUTO" goes out.
F Press button 10 again to reactivate the
automatic comfort programme.
Air flow adjustment
F Press one of the buttons 5 to increase (+) or
decrease (-) the fan speed.
The air flow symbol (a fan) is filled in
progressively as the speed of the fan is
increased.
By reducing the air flow to minimum, you are
stopping ventilation.
"OFF" is displayed alongside the fan.
Avoid driving for too long without
ventilation – risk of condensation and
deterioration of air quality!