2006 Lancia Thesis climate control

146
AUTOMATIC
CLIMATE
CONTROL SYSTEM
GENERAL
The car can be equipped with a
two-zone or multi-zone automatic
climate control system.
The two-zone climate control sys-
tem controls temperature, air distri-
bution and flow inside the passenger
compartment in two areas: driver
side and passenger side.
The multi-zone climate control sys-
tem controls temperature, air distrib-
ution and flow inside the passenger
compartment in three areas: driver
side, passenger side or back-seat pas-
sengers.
Control of front-seat passenger and
back-seat passengers is alternated;
when the button led REARis turned
off, the front-seat passenger control
is operating, whereas when button
REARis pressed (button led turned
on), the back control panel is acti-
vated, thus excluding those for the
front-seat passenger.Temperature check is based on the
“heat balance” concept, which
means that the system works con-
stantly to keep a regular balance
between incoming and outgoing heat
energy, in order to stabilize temper-
ature inside the passenger compart-
ment and compensate possible vari-
ations of outside climate, sun radi-
ance included. For optimal control
of temperature in the two areas of
the passenger compartment, the sys-
tem is equipped with a sun ray sen-
sor.
The system features a pollution
sensor which can automatically
switch the air recirculation function
on to reduce the unpleasant effects
of polluted air in cities, queues, tun-
nels and when the windscreen wash-
er is operated (with the characteris-
tic smell of alcohol).
The air quality is controlled by an
active carbon dust/pollen filter
which has the double function of
mechanically filtering the particles
dispersed in the air and attenuating
the peak accumulation of certain
pollutants.Parameters and functions auto-
matically controlled are the follow-
ing:
– temperature of air let into dri-
ver/passenger vents (front-seat/
back-seats);
– air distribution to vents on dri-
ver/passenger side (front-seat/
back-seats);
– fan speed (continuos variation of
air flow);
– compressor activation (to cool
air);
– air recirculation.
All these functions can be adjusted
manually, it means that one or more
system functions can be selected and
that it is possible to change their
parameters. However, in this way
the system is unable to control man-
ually selected functions which will
be changed by the system only for
safety reasons, while keeping the
required temperature.

147
IMPORTANTDuring air distribu-
tion automatic management, all the
air distribution button leds are off.
User can select manually any distri-
bution, and only in this case, the
concerned button led will be lit.
The manual settings have priority
over the automatic settings until the
user returns the system to automatic
control.
Manual setting of a function does
not compromise automatic control
of the other functions.
The amount of air let into the pas-
senger compartment does not
depend on the car speed. It is in fact
adjusted by an electronically con-
trolled fan.
The temperature of the air let into
the passenger compartment is
always controlled automatically
(unless the system is off), according
to the temperatures set on the dri-
ver’s and front/rear passenger’s dis-
plays.The following parameters and
functions can be adjusted manually:
– air temperature on driver/pas-
senger side (front/rear);
– fan speed (continuous variation);
– air distribution in seven positions
(driver/passengers);
– diffused air distribution;
– compressor activation;
– priority of one-zone/two-zone
distribution (front/back);
– rapid defrosting/demisting func-
tion;
– air recirculation;
– automatic/manual system con-
trol;
– heated rear window;
– system off;
– activation of back control panel.
The defrosting/demisting function
includes a set of operations enabling
to defrost/demist rapidly both the
windscreen and the heated rear win-
dow.At each turning off, the system
after storing control and function
conditions, sets up the open recircu-
lation, thus creating the necessary
conditions for operation at first
speed of climate control system fan
at parking, fed by solar cell operated
sunroof (where provided).
IMPORTANTBest operation of
climate control system fan at park-
ing, fed by solar cell operated sun-
roof (where provided), is obtained
by closing completely the windows
and sunroof. Furthermore, to check
operation at first speed of climate
control system fan when the car is
parked, disengage air vents and set
air distribution from central dash-
board vents only before leaving the
car.
When turning on, the system
restores the conditions memorized
before turning off, except for the
rapid defrosting/demisting function
which is reset.

151
HOW TO USE THE CLIMATE
CONTROL SYSTEM
The system can be switched on in
various ways. We recommend start-
ing by pressing the AUTObutton
and setting the required tempera-
tures on the display.
Since the system controls three
areas of the passenger compartment,
the driver and the front/back pas-
sengers can select different tempera-
ture values, with a maximum differ-
ence accepted by the system of 7 °
C.
In this way, the system will start
working fully automatically to reach
the required temperature as soon as
possible. It will maintain the tem-
perature by adjusting the amount
and distribution pattern of the air let
into the passenger compartment and
manage the recirculation function
and the climate control system com-
pressor.When the system is working auto-
matically, the only possible manual
functions are:
– MONO, to align air temperature
and distribution on the passenger
side or in the back-seat passengers’
area with that on the driver side;
– REAR, to activate the back con-
trol panel;
– √, to switch off the compressor:
in these conditions the system works
only as a heater;
– air recirculation, to keep recircu-
lation always turned on or off;
–-, for faster defrosting/demist-
ing the front windows, rear window,
external rearview mirrors and wind-
screen wiper nozzles;
– (,for defrosting/demisting the
heated rear window and external
rearview mirrors.The temperature, air distribution
and fan speed settings can be
changed at any time during auto-
matic system operation. The system
will automatically adjust to the new
request. When the system is fully
working in automatic mode (FULL
AUTO), if air distribution and/or
flow is changed, definition FULL
disappears. In this way functions
pass from the automatic mode to the
manual mode, until button AUTOis
pressed again. There is only one fan
speed for all the passenger compart-
ment areas and it can be changed
also by operating back controls,
when activated.
With one or more functions manu-
ally on, the air temperature let into
the passenger compartment is auto-
matically managed by the system
unless the climate control compres-
sor is off. In this condition, in fact,
the air inlet into the passenger com-
partment cannot have a lower tem-
perature than that of the external
air.

153
To switch this function off, turn
the temperature knob to the left and
set the required temperature.
– LOfunction (maximum cooling):
it is activated by turning the temper-
ature knob to the left beyond the
minimum value (16 °C). It can be
independently switched on from dri-
ver’s side or from (front/back) pas-
senger’s side or from both sides (also
by selecting the MONOfunction).
This function can be switched on to
speed up cooling the passenger com-
partment by exploiting the system
potential to the maximum. This
function cuts out the heater and
switches the air recirculation and the
climate control compressor on. The
air distribution and the fan speed
are selected according to the envi-
ronmental conditions. All the manu-
ally settings can be adjusted when
the function is on. To switch this
function off, turn the temperature
knob to the right and set the
required temperature.Buttons for adjusting front air
distribution (10, 18 fig. 121)
Press these buttons to manually
select one of the seven possible air
distribution patterns in the front
passenger compartment (right and
left side):
AAir flow to windscreen and front
side window vents for defrosting/
demisting the windows.
FDAir flow to central and side
dashboard vents and the rear vents.
IMPORTANTOn versions equipped
with solar cell operated sunroof
(where provided), to check opera-
tion at first speed of climate control
system fan when the car is parked,
disengage air vents and set air distri-
bution from central dashboard vents
only before leaving the car.
SAir flow to the front and rear
footwells. The air distribution pat-
tern, due to the natural tendency of
heat to move upwards, allows to
heat the passenger compartment up
as fast as possible. Furthermore, it
offers a prompt feeling of warmth to
the coolest parts of the body.Air flow shared between
footwell vents (warmer air)
and central and side dashboard
vents and the rear vents (cooler air).
This air distribution pattern is par-
ticularly useful in middle seasons
(spring and autumn) when it is
sunny.
Air flow shared between the
footwell vents and the windscreen
and front side window
defrosting/demisting vents. This air
distribution pattern ensures a good
heating of the passenger compart-
ment and prevents possible misting
up.
Air flow distribution between
central and side dashboard
vents, rear vents and windscreen
and front side window vents.
Air flow distribution
between all passenger com-
partment vents.
Air distribution setting is displayed
when leds relevant to the selected
button are lit, which will be turned
off in case of fully automatic opera-
tion (FULL AUTO). F
SD
A
S
FA
D
FA
SD

155
Buttons for adjusting fan speed
(13, 14 fig. 121 – 7, 8 fig. 122)
Press respectively front control
buttons 13or 14 (fig. 121) and back
control buttons 8or 7 (fig. 122) to
increase or decrease the fan speed so
to adjust the amount of air let into
the passenger compartment while
keeping the required temperature
constant.
The fan speed is indicated by the
bars which light up on the front dis-
play 5 (fig. 121) and rear display 3
(fig. 122), when the back control
panel is active. Repeatedly press
button or keep pressed 13 (fig. 121)
or 8(fig. 122) to switch the fan on
at top speed (all bars on).
Repeatedly press or keep pressed
button 14(fig. 121) or 7(fig. 122)
to switch the fan on at minimum
speed (one bar on).When the fan minimum speed is
set up (one bar on), by keeping
pressed for at least two seconds but-
ton 14(fig. 121) or 7(fig. 122), the
climate control system is deactivated
and all the fan bars on the display
turn off; OFFmessage is displayed.
The fan speed can be adjusted
manually through both the front
control panel and the rear control
panel, but it is the same one for the
whole passenger compartment.
IMPORTANTPress the AUTO
button to restore air distribution
control after a manual setting.AUTO buttons
(automatic operation)
(1, 9 fig. 121 - 5 fig. 122)
Press the AUTObutton on the dri-
ver side and/or front/back-seat pas-
senger side: the system will automat-
ically control the air amount and
distribution pattern in the related
passenger compartment areas and
will cancel all the previously made
settings. This condition is marked by
the message FULL AUTOon the
system front and rear display,
besides the leds on the air distribu-
tion buttons turning off.
If one of the functions automatical-
ly controlled by the system (air recir-
culation, air distribution, fan speed
or air conditioner compressor deacti-
vation) is manually adjusted, the
message FULLon the display turns
off to indicate that the system is no
longer controlling the functions inde-
pendently (apart from temperature
control that is always automatic).

The climate control system can be
deactivated also by the rear control
panel, when operating: press repeat-
edly or keep pressed button 7 (fig.
122) until all the fan bars on the dis-
play turn off and message OFFis
displayed.
To exclude the rear control panel,
press again button REAR; the but-
ton led turns off and the front-seat
passenger’s controls are operating
again.
Air recirculation on/off button
(3 fig. 121)
The air recirculation function is
controlled according to three strate-
gies:
– automatic operation (button left
led on);
– forced ventilation on (recircula-
tion always on), the right led on the
button will come on;– forced deactivation off (recircula-
tion always off, air taken from the
outside), both leds on the button will
go off.
The three conditions are obtained
by pressing the air recirculation but-
ton 3in sequence.
When the air recirculation function
is automatically controlled by the
system, the left led on the air recir-
culation button is turned on, while
the right led is on or off according to
the actual recirculation conditions
(on or off).
During automatic operation, the
recirculation function is automati-
cally switched on when the pollution
sensor detects the presence of pollut-
ed air, e.g. in cities, queues, tunnels
and during windscreen wiper opera-
tion (due to the characteristic smell
of alcohol). In addition, if the compressor is on
and the outside temperature is over
5 °C, to prevent air polluted by
exhaust gases getting inside the pas-
senger compartment during stops,
the system stops air recirculation
when the car speed is lower than 6
km/h. When the car speed returns
over 12 km/h, the system restores
the previous conditions.
After using the air recirculation
function for a long time (over 15
consecutive minutes), the system
automatically stops it for safety rea-
sons, thus letting air be changed.
When air recirculation manual
control is set (button left led off),
message FULLon the display is off.
157

158
IMPORTANTAir at a temperature
lower than that of the outside air
cannot be let in to the passenger
compartment when the compressor
is off. Furthermore, in particular
environmental conditions, the win-
dows could mist up fast because the
air is no longer dehumidified.
The setting will be stored when the
engine is stopped. Either press √
button again or press the AUTObut-
ton to reset automatic control of the
compressor (in the latter case, the
manual settings will be cancelled).
The led on the √button will go out. IMPORTANTThe air recircula-
tion function will allow, according to
the system operation (i.e. heating or
cooling) to reach the required condi-
tions faster. We recommend not
turning on this function on rainy
and/or cold days as this will consid-
erably increase window misting,
especially if the climate control sys-
tem is off.
In particular climate
conditions (e.g. low out-
side temperature or high
humidity) and with the inside air
recirculation automatic control
on, windows could start misting
up. In this case, press the air
recirculation button and set it to
forced open position (both button
leds off), and increase air flow to
the windscreen, if required.Climate control system
compressor off button (7 fig. 121)
Press the √button, when the but-
ton led is on, to switch the air condi-
tioner compressor off. The led will
go off. By pressing again the button
when the led is off, the system auto-
matic control of the compressor acti-
vation is restored; this situation is
indicated by button led lighting up.
When the air conditioner compres-
sor is off, if the system is no longer
able to keep the requested tempera-
ture, the message FULL AUTOon
the display turns off and the system
deactivates air recirculation to pre-
vent window misting up. Instead, if
the system is still able to maintain
the requested temperature, the mes-
sage FULLon the display will stay
on.

159
The air let into the passenger com-
partment cannot be cooled when the
compressor is off. Consequently:
– if the outside temperature is
lower than the set temperature, the
system works normally and can
reach and maintain the set tempera-
ture also when the compressor is off;
– if the outside temperature is
higher than the set temperature, the
system cannot reach the required
temperature. This will be signalled
by flashing the external temperature
value on the display.
When the compressor is off, it is
possible to reset manually the fan
speed; on the contrary, when the
compressor is on and the engine is
running, manual ventilation cannot
be lower than the bar indicated on
the display. Button for fast windscreen
demisting/defrosting (15 fig. 121)
Press this button: the climate con-
trol system will automatically switch
on all the functions required for fast
windscreen and side window demist-
ing/defrosting, that is:
– climate control system compres-
sor on;
– air recirculation off (if on);
– maximum air temperature (HI)
on both displays;
– fan speed according to engine
coolant temperature in order to limit
letting cold air into the passenger
compartment for demisting the win-
dows;
– air flow directed to the wind-
screen and front side window vents;
– heated rear window, external
rearview mirror and windscreen noz-
zle resistances on.The fast windscreen demisting/
defrosting function stays on for
approx. 3 minutes after the engine
coolant temperature exceeds 50 °C
(petrol versions) or 35 °C (diesel
versions).
When the fast demisting/defrosting
function is on, the led on the related
button and that on the heated rear
window button are lighted, while
both leds on the air recirculation
button and that on button √turn
off. Message FULL AUTOon the
display will turn off.
Only the fan speed can be adjusted
and the heated rear window can be
switched off when the fast demist-
ing/defrosting function is on.
Press the fast demisting/defrosting
button again or air recirculation
button or compressor off button to
switch the fast demisting/defrosting
function off and reset the previous
system operation conditions as well
as the last set function.