CITROEN Grand C4 PICASSO Owner's Handbook Manual page 112

Comfort
Automatic comfort
programme
Press the "AUTO" button
to activate or deactivate the
automatic mode of the air
conditioning system.
When the indicator lamp in the button is on, the
air conditioning system operates automatically:
the system manages the temperature, air
flow and air distribution in the passenger
compartment in an optimum way according to
the comfort level you have selected.
It is possible to modulate the intensity of the
automatic comfort programme by choosing one
of three mode settings offered in a secondary
page of the " Air conditioning " menu.
110
To change the current setting, shown by the
green indicator lamp, press the button for the
desired mode:
"Soft": provides soft and quiet
operation by limiting air flow.
"Normal": offers the best compromise
between a comfortable temperature
and quiet operation (default setting).
"Fast": provides strong and effective
air flow.
This setting is associated with AUTO mode
only. However, on deactivation of AUTO mode,
the indicator for the last setting remains on.
Changing the setting does not reactivate AUTO
mode if deactivated.
In cold weather with the engine cold,
the air flow is increased gradually until
the system has warmed up, 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 value setting, there
is no need to alter the value displayed
in order to reach more quickly the
required level of comfort. The system
compensates automatically and
corrects the temperature difference as
quickly as possible.