Alfa Romeo 156 2004 Owner handbook (in English)

GETTING TO KNOW YOUR CAR
119
HOW TO USE THE AUTOMATIC
TWO-ZONE CLIMATE CONTROL(fig. 101)
WARNINGThe knob rings are not pro-
vided with automatic stopper; therefore,
they are free to rotate in both directions once
they have reached the maximum or mini-
mum values.
The system can be started in different
ways, but it is recommended that the re-
quired temperatures are set on the
displays; then, press (14)
AUTO
button.
Thus, the system will start operating fully
automatic, to reach the set temperatures
in the shortest possible time and keep them.
During the fully automatic operation of the
system, the set temperatures can however
be modified at any time: the system will au-
tomatically modify its own settings to adapt
itself to the new requirements.WARNINGThe temperature difference
between the driver’s and the passenger’s
sides must not be greater than 7°C in order
to be accepted by the system.
The selections made by the system in au-
tomatic mode can be customized by man-
ually acting on the following controls:
– fan speed adjustment knob (3)
– air distribution selection button (8)
– inside air recirculation on/off button (7)
v– climate control compressor on enable
button (12)
√
.
Manually selecting one or more of these
functions turns off the right led on the but-
ton (14)
AUTO
.With one or more functions switched on
manually, the temperature control for the air
admitted to the passenger compartment will
in any case continue to be monitored auto-
matically by the system (left led on button
14
AUTO
on), except with the climate con-
trol compressor off.
In fact, in this condition, the temperature
of the air admitted into the passenger com-
partment cannot be lower than the outside
air temperature; this condition is indicated
by the turning off of the two leds on but-
ton (14) AUTO
and flashing on the display
(2) and/or (5) related with the tempera-
ture rate that cannot be obtained.

GETTING TO KNOW YOUR CAR
120
AIR TEMPERATURE
ADJUSTMENT KNOBS
(fig. 102)
Turning the rings of knobs (1or 6) clock-
wise or counterclockwise, respectively high-
ers or lowers the temperature of the air re-
quired in the left zone (knob 1) or right
zone (knob 6) of the passenger compart-
ment. The temperatures set are shown on
the displays (2) and (5) placed below the
respective knobs.
Separate operation of the temperatures set
is restored automatically using knob (6) is
actuated.
Turning the knob rings clockwise or coun-
terclockwise, until they reach the extreme
selection positions HIor LO, will cause the
maximum heating or cooling functions, re-
spectively, to be switched on:
fig. 102
A0B0063m

GETTING TO KNOW YOUR CAR
121
fig. 103
A0B0064m
HI function
(highest heating power - fig. 103)
It is switched on by setting a temperature
of more than 32.5°C on the display, and
can be switched on independently from the
driver’s or passenger’s side, or both of them;
this setting brings the system to the “one-
zone” mode and is shown by both displays.
This functions can be switched on when
you wish to heat the passenger compart-
ment as quickly as possible, by taking the
greatest advantage from the system po-
tential.
The function uses the maximum temper-
ature of the heating fluid, whereas air dis-
tribution to feet and 5
thfan speed.
With the function switched on, however,
all the manual settings can be made.
To switch the function off, you only need
to turn the ring of a knob (1) or (6) of the
temperature set to a value lower than
32.5°C; the opposite display will show
32.5°C.By pressing button (14)
AUTO
, the dis-
play indicates a temperature of 32.5°C and
falls within an operating condition with au-
tomatic temperature control.

GETTING TO KNOW YOUR CAR
122
LO function
(highest cooling power - fig. 104)
It is switched on by setting a temperature
lower than 16.5°C on the display; this set-
ting is shown by both displays.
This function can be switched on when you
wish to cool the passenger compartment as
quickly as possible, by taking the greatest
advantage from the system potential.
The function cuts off air heating, switches
on both internal air recirculation (to prevent
hot air from entering the compartment) and
the climate control compressor, brings air
distribution to E
and 5
thfan speed.
With the function switched on, however,
all the manual settings can be made.
To switch the function off, you only need
to turn the ring of a knob (1) or (6) of the
temperature set to a value greater than
16.5°C; the opposite display will show
16.5°C.
fig. 104
A0B0065m
By pressing button (14)
AUTO
the display
indicates a temperature of 16.5°C and falls
within an operating condition with automatic
temperature control.

GETTING TO KNOW YOUR CAR
123
fig. 105
A0B0066m
MONO BUTTON
FOR ALIGNMENT OF
THE TEMPERATURES SET (fig. 105)
By pressing button (11)
MONO
the pas-
senger’s side temperature automatically
aligns with that on the driver’s side and,
therefore, the same temperature can be set
for both areas by simply turning the ring of
knob (1), on driver’s side.
This function is provided to facilitate tem-
perature adjustment inside the entire pas-
senger compartment when only the driver
is on board.
Separate operation of set temperatures is
automatically restored when the passenger
operates the ring of knob (6) or by press-
ing button (11)
MONO
.

GETTING TO KNOW YOUR CAR
124
FAN SPEED ADJUSTMENT
KNOB
(fig. 106-107)
Turning the ring of knob (3), clockwise
or counterclockwise will cause the fan speed
- and, therefore, the amount of air flowing
into the passenger compartment - to in-
crease or decrease, respectively; the 16
speeds that can be selected are displayed
by a bar (every 3 clicks), up to a maximum
of 6 illuminated bars:
– max. fan speed = all bars lit;
– min. fan speed = one bar lit.
The fan can be cut off (all bars off) only
if the climate control compressor has been
switched off by pressing button (12)
√
.
To resume automatic fan speed control af-
ter a manual setting has been made, press
button (14)
AUTO
. By fully turning the ring
of knob (3) counterclockwise, the system
will be turned off, with the following situa-
tion: display (2) OFF; display (5) OFF; cen-
tral display (4) OFF and left-hand led avail-
able on internal air recirculation button (7)
v
ON and both led on AUTO button
switch OFF.WARNINGBy pressing the internal air
recirculation button (7)
v
, it is possible
to let external fresh air into the passenger
compartment.
fig. 106
A0B0067m

GETTING TO KNOW YOUR CAR
125
fig. 107
A0B0068m
To turn the system on again, you only need
to turn the ring of knob (3) clockwise, or
press any button, except the internal air re-
circulation button (7) and rear window
heater button (9); this operation resumes
all the operating conditions previously stored
in the memory.
WARNINGAfter exiting the conditionOFF
, the internal air recirculation
v
is re-
sumed to the condition preceding the switch-
ing off.

GETTING TO KNOW YOUR CAR
126
AIR DISTRIBUTION SELECTION
BUTTON
(fig. 108)
By pressing button MODE(8) repeat-
edly, you can manually choose one of the
five possible modes for air distribution:
E
Flow of air to the dashboard centre
and side outlets and rear outlets.
ZE
Splitting of the air flow between the
vents to the lower part of the pas-
senger compartment (warmest air)
and the dashboard centre and side
outlets and the rear outlet (coolest
air). This air flow distribution is par-
ticularly useful in spring and autumn,
when the sun is shining.
Z
Air flow towards the front and rear
lower part of the passenger compart-
ment. Due to the natural tendency of
heat to spread upwards, this type of
distribution allows heating of the pas-
senger compartment in the shortest
time, also giving a prompt feeling of
warmth to the coldest parts of the
body.
Q
Splitting of the air flow between the
windscreen and side window defrost-
ing/demisting vents and the lower
part of the passenger compartment.
This type of air distribution allows sat-
isfactory heating of the passenger
compartment while preventing pos-
sible misting of the windows.
Q
Air flow to the windscreen and front
side window vents to demist or de-
frost them.
To resume automatic air distribution con-
trol after a manual selection, press button
(14) AUTO
.
fig. 108
A0B0069m
Z

GETTING TO KNOW YOUR CAR
127
CLIMATE CONTROL
COMPRESSOR ON/OFF
ENABLE BUTTON
√
(fig. 109)
Pressing button (12)
√
enables the turn-
ing on of the climate control compressor.
This condition is shown by the lighting up of
the led placed on the button itself.
When the climate control compressor is
turned off, the leds on buttons (14)
AUTO
and (12)
√
go off; automatic inside air re-
circulation control is also excluded (both leds
off on button 7
v
) which always stays
off to prevent window misting; in any case,
the automatic operation of inside air recir-
culation can be resumed (though it is not
recommended) by pressing button 7
v
.
fig. 109
A0B0070m

GETTING TO KNOW YOUR CAR
128
When the climate control compressor is off,
it is not possible to admit air to the pas-
senger compartment with a temperature be-
low the outside temperature; in this case,
the value flashes on the display concerning
the temperature that cannot be reached
and the left led on button (14
AUTO
-
fig. 110) goes off.
The switching off of the climate control
compressor remains in storage even when
the engine has been stopped. To resume au-
tomatic control for switching on the climate
control compressor, press button (12) √
again, the button led will turn on, or press
button (14)
AUTO
; in which case, the other
manual settings set will be cancelled.
fig. 110
A0B0071m
Operation of the climate
control compressor is nec-
essary for cooling and dehumidify-
ing the air; it is advisable to keep
this function always on, to prevent
window misting problems.
WARNING