Set Temperature Control; Airflow Control; Automatic Control; Vent Rate Control By Heating Operation - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

SYSTEM BASIC FUNCTION

Set Temperature Control

When you set the setting temperature using the tempera-
ture control switch, the FATC receives the various input
signals from sensors including the information of inside air
temperature, ambient temperature, coolant temperature
and sun loads etc.. The FATC uses this signals to control
automatically the A/C compressor, the mode door, the I/A
door, air mix door and blower motor etc.

Airflow Control

For setting at Full AUTO, it is possible to control the blower
motor operation both manually and automatically in order
to adjust the airflow according to the set temperature.

Manual Control

When you push the blower switch, you can control the
blower motor manually and it increases or decreases each
step by moving the switch to HI/LO. (with the ignition ON)
Step
1
2
3
4
5
6
• The voltage of the blower motor may increase or
decrease (0.5 V) according to power voltage.
A/C SYSTEM
REXTON SM - 2004.4
Blower Voltage
4.5 V
6.0 V
7.5 V
9.0 V
11.0 V
Max Hi

Automatic Control

Td value can be determined by the set temperature value
and Td value is set to the target voltage of the blower mo-
tor simultaneously. The blower motor can shift without step.
Note
Td (Thermal Demand): Td value is the default for
automatic control of the automatic temperature control
and allows it to control the set temperature calculating
the differences between inside air temperature and
ambient temperature.
Blower Step Blower Motor Voltage
1
2
3
4
5
6
Vent Rate Control By Heating
Operation
When the temperature of the engine coolant is low or it's
difficult to obtain the desired hot air in winter, the system
controls to prevent the cold airflow from the outlet due to
the cold air give a negative effect to the heating performance.
Therefore vent step is fixed 1st on blower AUTO step until
the coolant sensor detects above 20°C and also the blower
step increases gradually according to going up the cool-
ant temperature. When the coolant temperature goes up
above 40°C, the heating operation stops.
10C-43
Y220_10C065
4.0 ~ 5.5 V
5.5 ~ 7.5 V
7.5 ~ 8.5 V
8.5 ~ 9.5 V
9.5 ~ 10.5 V
10.5 ~ 13.5 V
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN