2012 FIAT DUCATO cooling

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F0N0043mfig. 49
MANUAL CLIMATE CONTROL
SYSTEM
(for versions/markets where provided)
CONTROLS fig. 50
Air temperature adjustment ring nut A
(mixing hot/cold air)
Red section = hot air
Blue section = cold air
Knob B activates/adjusts the fan
p0 = fan off
1-2-3 = fan speed
4
-= maximum fan speed INTERNAL AIR RECIRCULATION
ACTIVATION
Turn the knob D-fig. 47 to
Ò.
It is advisable to switch the internal air recirculation on
while standing in queues or in tunnels to prevent the
introduction of polluted air. Do not use the function for
a long time, particularly if there are many passengers on
board, to prevent the windows from misting up.
IMPORTANT The inside air recirculation system makes
it possible to reach the required heating or cooling
conditions faster.
Do not use the air recirculation function on rainy/cold
days as it would considerably increase the possibility of
the windows misting up.
F0N0514mfig. 50

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Air distribution ring nut C
¶to direct air to the centre and side vents;
ßto send air to the feet and direct cooler air to the
dashboard vents, in intermediate temperature
conditions;
©for heating when the outside temperature is very
low: to direct as much air as possible to the feet;
®to warm the feet and, at the same time, demist the
windscreen;
-for quick windscreen demisting.
Air recirculation on/off knob D
Press the button (button LED on) to turn the internal
air recirculation on.
Press the button again (button LED off) to turn the
internal air recirculation off.
Climate control system on/off button E
Press the button (button LED on) to turn the climate
control system on.
Press the button again (button LED off) to turn the
climate control system off.PASSENGER COMPARTMENT VENTILATION
To ventilate the passenger compartment well, proceed as
follows:
❒turn the ring nut A to the blue section;
❒switch off the air recirculation by turning the knob D
to
Ú;
❒turn the ring nut C to ¶;
❒turn the knob B to the required speed.
CLIMATE CONTROL SYSTEM (cooling)
For fast cooling of the passenger compartment, proceed
as follows:
❒turn the ring nut A to the blue section;
❒switch on the air recirculation by turning the knob D
to
Ò;
❒turn the ring nut C to ¶;
❒press the button E to turn the climate control
system on; the LED in the button E will come on;
❒turn the ring nut B to 4-(max. fan speed).

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❒turn the ring nut C to ©;
❒turn the knob B to 4-(max. fan speed).
Then use the controls to maintain the required comfort
conditions and turn the knob D to
Úto turn the
internal air recirculation off (button LED off).
IMPORTANT With cold engine, you have to wait for
a few minutes to let the system fluid reach the operating
temperature.
FRONT WINDOW FAST DEMISTING/
DEFROSTING (WINDSCREEN AND SIDE
WINDOWS)
Proceed as follows:
❒turn the ring nut A to the red section;
❒turn the knob B to 4-(max. fan speed).
❒turn the ring nut C to -;
❒switch off the air recirculation by turning the knob D
to
Ú. Cooling adjustment
❒Turn the ring nut A to the right to increase the
temperature;
❒switch off the air recirculation by turning the knob D
to
Ú;
❒turn the ring nut B to reduce the fan speed.
IMPORTANT When the air conditioner compressor
button E is pressed, the function is only activated if at
least the first fan speed is selected (knob B).
PASSENGER COMPARTMENT HEATING
Proceed as follows:
❒turn the ring nut A to the red section;
❒turn the ring nut C to the required symbol;
❒turn the knob B to the required speed.
FAST PASSENGER COMPARTMENT
HEATING
For the fast heating of the passenger compartment,
proceed as follows:
❒turn the ring nut A to the red section;
❒turn the air recirculation on by turning the knob D
to
Ò;

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F0N0043mfig. 52
INTERNAL AIR RECIRCULATION
ACTIVATION
Turn the knob D to
Ò.
It is advisable to switch the internal air recirculation on
while standing in queues or in tunnels to prevent the
introduction of polluted air. Do not use the function for
a long time, particularly if there are many passengers on
board, to prevent the windows from misting up.
IMPORTANT The inside air recirculation system makes
it possible to reach the required heating or cooling
conditions faster.
Do not use the air recirculation function on rainy/cold
days as it would considerably increase the possibility of
the windows misting inside.
SYSTEM SERVICING
In winter, the climate control system must be turned on
at least once a month for about 10 minutes. Before
summer, have the system inspected at a Fiat Dealership. HEATED REAR WINDSCREEN AND DOOR
MIRRORS DEMISTING/DEFROSTING fig. 52
(for versions/markets where provided)
Press the button A to activate this function; when this
function is on the warning light in the button comes on.
This function is timed and will turn off automatically
after 20 minutes. Press the button A again to switch the
function off.
IMPORTANT Do not apply stickers on the inside of the
rear window over the heating filaments to avoid damage
that might cause it to stop working properly.
The system uses R134a refrigerant fluid
which does not pollute the environment
in the event of accidental leakage. Under
no circumstances should R12 fluid be used as it is
incompatible with the system components.

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E System off button.
F Compressor enabling/disabling button.
G Air recirculation control button.
H Fan speed increase/decrease control buttons.
I Temperature increase/decrease control knob.
USING THE CLIMATE CONTROL SYSTEM
The system can be started in different ways, but it is
advisable to start by pressing the AUTO button and
then turning the knob to set the temperature required
on the display. The system will start running
automatically in this way and the set temperature will be
reached as quickly as possible. The system will adjust
the temperature, the quantity and the distribution of the
air introduced into the passenger compartment and, by
managing the recirculation function, the activation of the
compressor. During fully automatic operation, the only
manual intervention required is the possible activation
of the following functions:
❒Òair recirculation, to keep it always on or off;
❒Zto speed up demisting/defrosting of the front
windows, rear window and door mirrors.During fully automatic system operation, you can change
the set temperature, air distribution and fan speed at
any time by using the relevant buttons or knobs: the
system will automatically change its settings to adjust to
the new requirements. During fully automatic operation
(FULL AUTO), the word FULL will disappear if the air
distribution and/or flow rate and/or engagement of the
compressor and/or recirculation settings are changed.
In this way, the functions will switch from automatic to
manual control until the AUTO button is pressed again.
With one or more functions turned on manually, the
adjustment of the intake air temperature continues to
be managed automatically, except with the compressor
switched off: if this is the case, the temperature of the
air introduced into the passenger compartment cannot
be lower than that of the outside air.
CONTROLS
Air temperature adjustment knob
air (l)
Turn the knob either clockwise or
anticlockwise to increase or lower the
requested temperature in the passenger
compartment.
The temperature set is shown on the display.
Turn the knob either fully to the right or fully to the left
to the extreme HI or LO position to turn the maximum
heating or maximum cooling functions on:
❒HI Function (maximum heating):
select by turning the temperature knob clockwise
beyond the maximum value (32 °C).

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Air distribution buttons (B)
Press these buttons to manually set one
of the seven air distribution settings:
▲Air flow to the windscreen and front side window
vents to demist or defrost the windows.
˙Air flow to the central and side dashboard vents to
ventilate the chest and the face in hot weather.
▼Air flow to the front and rear footwell vents. Thanks
to the natural tendency of hot air to rise, this
distribution pattern allows the passenger
compartment to warm up as quickly as possible,
providing an immediate feeling of warmth.
˙
▼Air flow distribution split between footwell vents
(hotter air) and central and side dashboard vents
(cooler air). This distribution mode is particularly
useful in spring and autumn on sunny days.
▲
▼Air flow distribution split between the footwell vents
and the windscreen and front side windows
defrosting/demisting vents. This allows an adequate
warming of the passenger compartment and
prevents the windows from steaming up.
This function may be used to heat up the passenger
compartment by exploiting the system’s potential to the
full. In this event, the system stops controlling the
temperature automatically and sets the air mixing to
maximum heating. The air speed and distribution are
fixed.
In particular, if the heating fluid is not sufficiently hot,
the maximum fan speed does not come on straight away
in order to limit the intake of insufficiently hot air to the
passenger compartment.
All manual settings will be allowed when this function
is on.
To switch the function off, simply turn the temperature
knob anticlockwise and set the required temperature.
❒LO function (maximum cooling):
select by turning the temperature knob anticlockwise
beyond the minimum value (16 °C).
This function may be used to cool down the passenger
compartment by exploiting the system’s potential to the
full. In this event, the system stops controlling the
temperature automatically and sets the air mixing to
maximum cooling. The air speed and distribution are
fixed. All manual settings will be allowed when this
function is on.
To switch the function off, simply turn the temperature
knob clockwise and set the required temperature.

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It is however not advised to use it on rainy/cold days as
it would considerably increase the possibility of the
windows steaming up, especially if the climate control
compressor is off.
To prevent steaming up, the recirculation is forced off
(i.e. air is introduced from the outside) when the the
outside temperature is cold.
It is advisable not to use the air recirculation function
when the outside temperature is low to prevent the
windows from rapidly misting up.
Climate control compressor on/off
button (F)
Pressing the √button switches the
climate control compressor off, it if was
on previously and the logo in the display
goes out.
Press the button when the LED is off to restore
automatic system control of compressor activation.
The icon will light up on the display.
The system will switch recirculation off when the
compressor is switched off to prevent misting up.
Although the system is capable of maintaining the
required temperature, the word FULL will disappear
from the display. If the system is no longer able to
maintain the temperature, the figures will flash and the
word AUTO will go out. IMPORTANT Should the system (after manual
intervention) no longer be able to guarantee the target
temperature for the passenger compartment, the set
temperature value will start flashing to indicate the
difficulties the system is experiencing and then the word
AUTO will go out.
To restore system automatic control at any time, after
one or more manual adjustments, press the AUTO
button.
Air recirculation on/off button (G)
The Air recirculation works according to
the following operating logics:
❒override on (air recirculation always on), indicated
by the LED on the button
Gcoming on and the
symbol íon the display;
❒override off (air recirculation always off and
introduction of outside air), indicated by the LED
on the button going off and the symbol êappearing
on the display.
These operating conditions are obtained by pressing air
recirculation button G in sequence.
IMPORTANT The engagement of the air recirculation
system makes it possible to reach the required heating
or cooling conditions faster.

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SUPPLEMENTARY HEATER
INDEPENDENT
(for markets/versions, where provided)
The vehicle is available, on request, with two different
independent heaters: one fully automatic, the other
which can be programmed.
AUTOMATIC VERSION
The additional heater is turned on in automatic mode
when the engine is started and the required outside
temperature and coolant conditions are present.
Deactivation is always automatic.
IMPORTANT During periods with low outdoor
temperatures when the device cuts in, check that the
fuel level is always higher than the reserve level.
Otherwise the device could lock and require the
assistance of a Fiat Dealership.
The heater burns fuel in the same way
as the engine, though to a lesser extent.
To prevent poisoning and asphyxiation, the
supplementary heater must never be turned on,
even for short periods, in closed environments
such as a garage or workshops without
extraction fans for the exhaust gases.
WARNING
PROGRAMMABLE VERSION
The additional heater operates completely
independently of engine operation and allows the
following:
❒heating the vehicle passenger compartment with the
engine off;
❒defrosting the windows;
❒heating the engine coolant and consequently the
engine itself prior to starting.
The system consists of:
❒a diesel burner to heat the water with an exhaust
silencer for the combustion gases;
❒a metering pump connected to the vehicle tank
pipes, to supply the burner;
❒a heat exchanger connected to the engine cooling
system pipes;
❒a control unit connected to the passenger
compartment heating/ventilation system to allow
automatic operation;
❒an electronic control unit for control and operation
of the burner in the heater;
❒a digital timer A-fig. 55 for turning the heater on
manually or programming the time it comes on.