Citroen C4 AIRCROSS RHD 2017 1.G Manual Online

79
Ventilation
Air intake
The air circulating in the passenger compartment
is filtered and originates either from the outside via
the grille located at the base of the windscreen or
from the inside in air recirculation mode.
Air treatment
The incoming air follows various routes
depending on the controls selected by the
driver:
-
d
irect arrival in the passenger
compartment (air intake),
-

p
assage through a heating circuit (heating),
-

p
assage through a cooling circuit (air
conditioning).
Control panel
The controls of this system are grouped
together on control panel A on the centre
console. 1. W
indscreen demisting-defrosting vents.
2. F ront side window demisting-defrosting
vents.
3.
S

ide adjustable air vents.
4.
C

entral adjustable air vents.5. A
ir outlets to the front footwells.
6. A ir outlets to the rear footwells.
7.
T

emperature sensor.
8.
S

unshine / rain sensor.
Air distribution
3
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80
In order for these systems to be fully effective, follow the operation and maintenance
guidelines below:
F
T
o obtain an even air distribution, take care not to obstruct the exterior air intake grilles
located at the base of the windscreen, the nozzles, the vents and the air outlets, as well
as the air extractor located in the boot.
F

D
o not cover the sunshine sensor, located on the dashboard; this is used for regulation
of the air conditioning system.
F

O
perate the air conditioning system for at least 5 to 10 minutes, once or twice a month
to keep it in per fect working order.
F

E
nsure that the passenger compartment filter is in good condition and have the filter
elements replaced regularly.
W

e recommend the use of a combined passenger compartment filter. Thanks to its
special active additive, it contributes to the purification of the air breathed by the
occupants and the cleanliness of the passenger compartment (reduction of allergic
symptoms, bad odours and greasy deposits).
F

T
o ensure correct operation of the air conditioning system, you are also advised to have
it checked regularly as recommended in the maintenance and warranty guide.
F

I
f the system does not produce cold air, switch it off and contact a CITROËN dealer or a
qualified workshop.
Recommendations for ventilation and air conditioning
If after an extended stop in sunshine,
the interior temperature is very high, first
ventilate the passenger compartment for
a few moments.
Put the air flow control at a setting high
enough to quickly change the air in the
passenger compartment.
Humid air cooled quickly by the
vehicle's air conditioning system may
produce condensation at the vent
outlets.
This phenomenon disappears after a
few seconds.
When towing the maximum load on a steep gradient in high temperatures, switching off the
air conditioning increases the available engine power and so improves the towing ability. The condensation created by the air
conditioning results in a discharge
of water under the vehicle which is
per fectly normal.
E

81
Manual heating / air conditioning
The system operates with the engine running.
1. Temperature setting
F Turn the temperature control dial to the right to raise the
temperature, and to the left to
lower it.
To avoid misting and deterioration of the air
quality in the passenger compartment, ensure
that an adequate air flow is maintained.
3. Air distribution setting
F Place the dial in the desired position, to direct air towards:
t

he centre and side vents,
The air distribution can be modulated by
placing the dial in intermediate positions.
2. Air flow setting
F Turn the dial to the right to increase and to the left to
reduce the air flow.
t
he centre, side and footwell
vents,
t
he footwells,
t

he windscreen, side windows
and footwells,
t

he windscreen and side
windows.
3
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82
4. Exterior air intake / Recirculation of interior air
F Press button 4 to select the air
entry mode.
This function allows the passenger
compartment to be isolated from exterior
odours and smoke.
When the warning lamp in button
4 is off, the
intake of exterior air is active.
When the warning lamp in button
4 is on, the
intake of exterior air is deactivated, and you are
in air recirculation.
Do not drive for long with interior air
recirculation, except in truly exceptional
atmospheric conditions. The air conditioning is designed to operate
effectively in all seasons, with the windows closed.
It enables you to:
-

l
ower the temperature, in summer,
-

i
ncrease the effectiveness of the demisting
in winter, above 3 °C.
5. Air conditioning On / Off
Switching on
Switching off
F Press button 5 again, the lamp in the button goes off.
Switching off may affect comfort levels
(humidity, condensation). If your vehicle is not fitted with air
conditioning, the button is not active.
F
P
ress button 5
, the lamp in the
button comes on.
Ease of use and comfort

83
Automatic air conditioning
1. Temperature adjustment
2. Air flow adjustment
3.
A

ir distribution adjustment
4.
I

ntake of exterior air / Recirculation of
interior air
5.
A

ir conditioning On / OffAutomatic operation
F Set the temperature control dial 1 to the temperature required.
F

P
lace the air flow control dial 2 in
the
"AUTO" position.
F

P
lace the air distribution adjustment dial 3
in the "AUTO" position. When the engine is cold, to avoid an
excessive distribution of cold air, the
ventilation will reach its optimum level
gradually.
On entering the vehicle, the interior
temperature may be much colder
(or warmer) than the temperature
setting. There is no need to change the
temperature setting in order to reach
the comfort required rapidly.
The automatic regulation of the air
conditioning will operate to correct the
temperature difference as quickly as
possible.
In automatic mode:
F

w
hen the temperature is set to maximum
(Rapid heating), the intake of exterior air is
activated and the air conditioning stops.
F
w
hen the temperature is set to minimum
(Rapid cooling), air recirculation is
activated and the air conditioning operates.
The system controls the air distribution, the flow,
the temperature and the air intake to ensure
the level of comfort selected and adequate air
circulation in the passenger compartment. No
further action on your part is required.
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84
Manual settings
1. Temperature setting
2. Air flow setting
the central and side vents and the footwells,
F

T

urn the temperature control
dial to the right to increase the
temperature and to the left to
decrease it.
F
T
urn the dial to the right to
increase the air flow or to the
left to decrease it.
To avoid condensation and deterioration
of the quality of the air in the passenger
compartment, ensure that a sufficient flow of
air is maintained.
3. Air distribution setting
F Place the dial in the position required to direct the air
towards:
t

he central and side vents,
t

he footwells,
t

he windscreen, the side
windows and the footwells,
t

he windscreen and the side
windows.
The air distribution can be adapted by placing
the adjustment dial in the intermediate
positions.
It is possible to set one or more functions
manually while leaving the other functions in
automatic mode.
Switching to manual mode may result in
discomfort (temperature, humidity, odour,
condensation) and does not offer optimum
comfort.
Ease of use and comfort

85
Personalisation of the
Exterior air intake / Interior air
recirculation function
This function is controlled automatically.
However, you can deactivate its automatic
control if you wish to change the air intake
mode at any time.
Changing the status
Press the Air intake / Interior air recirculation
button for at least 10 seconds.
When the status changes from active to
inactive, three bleeps are heard and the
indicator lamp flashes three times.
When the status changes from inactive to
active, two bleeps are heard and the indicator
lamp flashes three times.
Automatic control active
If the air distribution adjustment dial and the air
flow adjustment dial are placed in the "AUTO"
position, the Air intake / Interior air recirculation
function is also controlled automatically.
Automatic control inactive
Even if the air distribution adjustment dial and
the air flow adjustment dial are placed in the
"AUTO" position, the Air intake / Interior air
recirculation function is no longer controlled
automatically.
The settings are retained, even after switching
off the ignition.
4. Intake of exterior air / Recirculation of interior air
This function insulates the passenger
compartment from exterior odours and smoke.
F

P
ress button 4 to select the air
intake mode.
When the indicator lamp on button 4 is off, the
exterior air intake function is on.
When the indicator lamp on button 4 is on, the
intake of exterior air is off and the system is in
air recirculation mode.
Do not drive for long periods in interior
air recirculation mode, except in truly
exceptional atmospheric conditions.
3
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86
5. Air conditioning On / Off
F Press button 5 to activate the air
conditioning.
The indicator lamp comes on.Personalisation of the Air
Conditioning On / Off function
This function is controlled automatically.
However, you can deactivate its automatic
control if you wish to activate or deactivate the
air conditioning at any time.
Changing the status
Press the Air Conditioning On / Off button for at
least 10 seconds.
When the status changes from active to
inactive, three bleeps are heard and the
indicator lamp flashes three times.
When the status changes from inactive to
active, two bleeps are heard and the indicator
lamp flashes three times.
Automatic control active
If the air distribution adjustment dial and the
air flow adjustment dial are placed in the
"AUTO" position, or if the temperature control
dial is set to the minimum temperature, the air
conditioning system is controlled automatically.
Automatic control inactive
The air conditioning system is no longer
controlled automatically.
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87
Front demist - defrost
1. Press button A, to select "exterior air intake". The lamp in the button
is off.
2.
P

lace the air distribution dial in the "windscreen, side windows and
footwells" position.
3.
S

elect the desired level of air flow.
4.
S

elect the desired temperature.
5.
I

f your vehicle has air conditioning, switch it on by pressing button B.
The lamp in this button comes on.Rapid demisting
1. Place the distribution control on the "windscreen and side window" position.
2.
S

elect maximum air flow.
3.
Sel

ect maximum temperature.
3
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88
Rear screen demist - defrost
Switching on
The rear screen demisting/defrosting can only
operate when the engine is running.
Switching off
The demisting/defrosting switches off
automatically to prevent an excessive
consumption of current.
F
I
t is possible to stop the demisting/
defrosting operation before it is switched
off automatically by pressing the button
again. The indicator lamp associated with
the button goes off.
F

S
witch off the demisting/defrosting of the
rear screen and door mirrors as soon as
appropriate, as lower current consumption
results in reduced fuel consumption.
The control button is located on the air conditioning system control panel.
F

P

ress this button to demist /defrost
the rear screen and (depending
on version) the door mirrors. The
indicator lamp associated with the
button comes

on.
Ease of use and comfort