2018 CITROEN C4 Owners Manual

55
C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
Ventilation
Air intake
The air circulating in the passenger compartment   is   filtered   and   originates   either  
f

rom   the   outside   via   the   grille   located   at   the  
b

ase   of   the   windscreen   or   from   the   inside   in   air  
re

circulation
 m
ode.
Air treatment
The incoming air follows various routes depending   on   the   controls   selected   by   the  
d

river:
-
 
d
irect   arrival   in   the   passenger  
c

ompartment   (air   intake),
-
 
p
assage   through   a   heating   circuit   (heating),
-
 
p
assage   through   a   cooling   circuit   (air  
c

onditioning).
Control panel
1. Windscreen d emisting-defrosting v ents.
2. F ront   side   window   demisting/defrosting  
ve

nts.
3.
 A

djustable   side   air   vent   (driver   only).4. C
entral   adjustable   air   vents.
5. A ir   outlets   for   the   front   footwells.
6.
 A

ir   outlets   for   the   rear   footwells.
Air distribution
The controls of this system are accessible in the " Air conditioning "
menu
  of   the   touch   screen   tablet   A.
The
 
demisting/defrosting   controls   for   the  
w

indscreen and rear screen are located below
the
 
touch
 
screen   tablet.
3
Ease of use and comfort

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C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
In order for these systems to be fully effective, follow the operation and maintenance guidelines belo w:
F
 
T
o   obtain   an   even   air   distribution,   take   care   not   to   obstruct   the   exterior   air   intake   grilles  
l

ocated 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  
o

f   the   air   conditioning   system.
F
 
O
perate   the   air   conditioning   system   for   at   least   5   to   10   minutes,   once   or   twice   a   month  
t

o   keep   it   in   per fect   working   order.
F
 
E
nsure   that   the   passenger   compartment   filter   is   in   good   condition   and   have   the   filter  
e

lements   replaced   regularly.
  W

e   recommend   the   use   of   a   combined   passenger   compartment   filter.   Thanks   to   its  
s

pecial active additive, it contributes to the purification of the air breathed by the
occupants
  and   the   cleanliness   of   the   passenger   compartment   (reduction   of   allergic  
s

ymptoms,   bad   odours   and   greasy   deposits).
F
 
T
o   ensure   correct   operation   of   the   air   conditioning   system,   you   are   also   advised   to   have  
i

t   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  
q

ualified
 w
orkshop.
Recommendations for ventilation and air conditioning
If after an extended stop in sunshine, the  i nterior  t emperature  i s  v ery  h igh,  f irst  
v

entilate   the   passenger   compartment   for  
a

  few   moments.
Put
  the   air   flow   control   at   a   setting   high  
e

nough   to   quickly   change   the   air   in   the  
p

assenger
 c
ompartment.
The
  air   conditioning   system   does   not  
c

ontain chlorine and does not present
any
  danger   to   the   ozone   layer.
The condensation created by the air
conditioning
  results   in   a   discharge  
o

f water under the vehicle which is
per fectly
  normal.
When
 
towing
 
the
 
maximum
 
load
 
on
 
a
 
steep
 
gradient
 
in
 
high
 
temperatures,
 
switching
 
off
 
the
 
a

ir
 
conditioning
 
increases
 
the
 
available
 
engine
 
power
 
and
 
so
 
improves
 
the
 
towing
 
ability.
Stop & Start
The heating and air conditioning s ystems   only   work   when   the   engine   is  
r

unning.
To
  maintain   a   comfortable   temperature  
i

n   the   passenger   compartment,   you   can  
t

emporarily   deactivate   the   Stop   &   Start  
s

ystem.
For
  more   information   on   Stop   &   Start,  
r

efer   to   the   corresponding   section.
Ease of use and comfort

57
C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
Heating
Temperature adjustment
F Press one of these buttons or   move   the   cursor   from   blue  
(

cold)   to   red   (hot)   to   adjust   the  
t

emperature   to   your   liking.
Air flow adjustment
F Press one of these buttons to increase or decrease the air flow
from
  the   system.
Avoid
  driving   for   too   long   without  
v

entilation   (risk   of   misting   and  
d

eterioration   of   air   quality).
The
 
heating
 
system
 
works
 
only
 
when
 
the
 
engine
 
is
 
running.
The
 
symbol   for   air   flow   (a   fan)   fills   progressively  
a

ccording
  to   the   air   flow   setting   made.
By
 
reducing   the   air   flow   to   the   minimum,   you  
a

re
 
stopping   ventilation   of   the   passenger  
c

ompartment.
F

Sel

ect the "
Air conditioning "
menu
 
in
 
the
 
touch
 
screen
 
tablet
 
t

o
 
display
 
the
 
controls
 
page
 
for
 
t

he
 
system.
3
Ease of use and comfort

58
C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
Air distribution adjustment
The intake of exterior air prevents and eliminates   misting   of   the   windscreen   and   side  
w

indows.
The
  recirculation   of   interior   air   prevents   exterior  
o

dours   and   smoke   entering   the   passenger  
c

ompartment.
Windscreen.
Central
 
and
 
side
 
vents.
Footwells.
Each press of a button activates or deactivates
the
 
function.
Air intake / Air recirculation
F Press this button to recirculate the   interior   air.
F
 
P

ress
  this   button   again   to   allow   the   intake  
o

f
 
exterior   air.
This function can also be used
temporarily
  to   speed   up   the   heating   of  
t

he
  air   in   the   passenger   compartment.
Avoid   the   prolonged   use   of   recirculation  
o

f
 
the   interior   air   (risk   of   misting   and  
d

eterioration   of   air   quality).
You can vary the air distribution in the passenger compartment   using   these   three   buttons.
For an even distribution of air in the
passenger  compartment,   the   three b

uttons   can   be   activated   simultaneously.
Ease of use and comfort

59
C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
Manual air conditioning
Temperature adjustment
F Press one of these buttons
or   move   the   cursor   from   blue  
(

cold)   to   red   (hot)   to   adjust   the  
t

emperature   to   your   liking.
The
 
manual
 
air
 
conditioning
 
system
 
operates
 
with
 
the
 
engine
 
running.
Air flow adjustment
F Press one of these buttons to
increase   or   decrease   the   air   flow.
The
 
symbol   for   air   flow   (a   fan)   fills   progressively  
a

ccording
  to   the   air   flow   setting   made.
By
 
reducing   the   air   flow   to   minimum,   you   are  
s

topping
 v
entilation.
Avoid
 
d
riving  
t
oo  
l
ong  
w
ithout  
v
entilation  
(

risk   of   misting   and   deterioration   of   air  
q

uality).
F

Sel

ect the "
Air conditioning "
menu
 
in
 
the
 
touch
 
screen
 
tablet
 
t

o
 
display
 
the
 
controls
 
page
 
for
 
t

he
 
system.
3
Ease of use and comfort

60
C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
Fresh air intake / Air
recirculation
The intake of fresh air avoids and eliminates misting   of   the   windscreen   and   side   windows.
Recirculation of the interior air isolates the
passenger
  compartment   from   exterior   odours  
a

nd   fumes.
F

P
ress this button to recirculate
the
  interior   air. The
  air   conditioning   is   designed   to   operate e
ffectively   in   all   seasons,   with   the   windows   closed.
It
  enables   you   to:
Air conditioning On / Off
Switching on
Switching off
The air conditioning does not operate when   the   air   flow   adjustment   is   set  
t

o off. F

P
ress this button to switch on the
air
 c
onditioning.
Avoid
 
the
 
prolonged
 
use
 
of
 
interior
 
a

ir
 
recirculation
 
(risk
 
of
 
misting
 
and
 
d

eterioration
 
of
 
air
 
quality).
This function can also be used
temporarily
 
to
 
speed
 
up
 
the
 
heating
 
or
 
c

ooling
 
of
 
the
 
passenger
 
compartment. -
 
l

ower   the   temperature,   in   summer,
-
 
i

ncrease   the   effectiveness   of   the   demisting  
i

n   winter,   above   3°C.
F  
P
ress   this   button   again   to   switch  
o

ff   the   air   conditioning.
Air distribution adjustment
You can vary the distribution of air in the
passenger  compartment   using   these   three  
b

uttons. Windscreen.
Each press on a button activates or deactivates
the
  function. Footwells. Central
  and   side   vents.F
 
P
ress   this   button   again   to   allow   the   intake  
o

f   exterior   air.
For
  a   uniform   distribution   of   air   in   the
 p

assenger   compartment,   the   three
 b

uttons   can   be   activated   simultaneously.
Ease of use and comfort

61
C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
Automatic air conditioning
Operation of the air conditioning and regulation of   temperature,   air   flow   and   air   distribution   in  
t

he   passenger   compartment   are   automatic.Temperature adjustment
F Press this button to increase the value.
F

P
ress this button to decrease
the value.
F

Sel

ect the "
Air conditioning "
menu
 
in
 
the
 
touch
 
screen
 
tablet
 
t

o
 
display
 
the
 
controls
 
page
 
for
 
t

he
 
system.
The  air   conditioning   system   operates  
a

utomatically:   the   system   manages   the  t
emperature,   air   flow   and   air   distribution   in  t
he   passenger   compartment   in   an   optimum  
w

ay   according   to   the   comfort   level   you   have  
s

elected.F

P
ress the "AUTO"
button
to activate or deactivate the
automatic   mode   of   the   air  
c

onditioning   system.
Automatic comfort
programme
Activation / Deactivation
The air conditioning system operates with the engine running, but the ventilation and its controls are available with the ignition on.
T he value indicated corresponds to a
level
  of   comfort   and   not   to   a   precise  
t

emperature.
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C4-cactus_en_Chap03_Ergonomie-et-confort_ed01-2016
In cold weather with the engine cold, the   air   flow   is   increased   gradually   until  
t

he   system   has   warmed   up,   in   order  
t

o   limit   the   delivery   of   cold   air   into   the  
p

assenger
 c
ompartment.
On
  entering   the   vehicle,   if   the   interior  
t

emperature   is   much   colder   or   warmer  
t

han   the   comfort   value   setting,   there  
i

s no need to alter the value displayed
in
  order   to   reach   more   quickly   the  
r

equired   level   of   comfort.   The   system  
c

ompensates   automatically   and  
c

orrects   the   temperature   difference   as  
q

uickly   as   possible.
This
 
setting
 
is
 
associated
 
with
 
AUTO
 
mode
 
o

nly.
 
However,
 
on
 
deactivation
 
of
 
AUTO
 
mode,
 
t

he
 
last
 
setting
 
used
 
remains
 
on.
Changing
 
the
 
setting
 
does
 
not
 
reactivate
 
AUTO
 
m

ode
 
if
 
deactivated.
To
 
change
 
the
 
current
 
setting,
 
press
 
the
 
button
 f
or
 
the
 
desired
 
mode:
" Soft ":
 
provides
 
soft
 
and
 
quiet
 
o

peration
 
by
 
limiting
 
air
 
flow.
" Normal ":
 
offers
 
the
 
best
 
c

ompromise
 
between
 
a
 
comfortable
 
t

emperature
 
and
 
quiet
 
operation
 
(

default
 
setting).
" Fast ":
 
provides
 
strong
 
and
 
effective
 
a

ir
 
flow.
Automatic programme mode
setting
F Go   to   the   secondary   page   by  p
ressing   this   button   to   vary   the  
a

utomatic   comfort   programme,  
c

hoosing   one   of   the   modes  
o

ffered.
Ease of use and comfort