2012 SSANGYONG KORANDO Service Manual

01-8
Recirculation switch Temperature dial
Mode dialFan speed dial
A/C switch
Recirculation switch
When you press this switch,
recirculation indicator comes on
and the system is changed into the
recirculation mode.
(However, under defroster mode or
defroster/floor mode, it stays in the
fresh air mode.) -
1) Full Automatic A/C Control
2. HEATER AND A/C CONTROL
To adjust the temperature, turn this
dial as required. Turning the dial to HI
increases the temperature and LO
decreases the temperature. - Temperature dial
Temperature dial ▶

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Incar sensor
This sensor detects the inside temperature and
installed in PCB.Face-Level
(vent mode)Face/Foot-Level
(bi-level mode)Foot-Level
(foot mode)
Foot/Defrost-level
(foot/defrost mode)
Defroster switch
Use this switch to remove for or
ice from the windshield. When
choosing this mode, the airflow
direction will be changed to the
windshield and side glasses, the
air conditioner operates
automatically, and fresh air
comes in. The air flow direction can be controlled by turning the dial. -
Airflow is changed
automatically according to the
setting temperature.
Fan speed dial
Manual control
Fan speed is manually controlled b
y
this dial. The increment is 1℃.
Auto control
Fan speed is automatically
controlled by temperature setting.
The blower motor operates in a
stepless mode. -
-
A/C switch
When pressing this switch,
the air conditioner operates
in manual mode and A/C
ON indicator comes on.
Fan speed dial ▶Mode dial ▶

01-10
Recirculation switchTemperature dial Mode dial Fan speed dial
A/C switch
2) Manual A/C Control
Fan speed dial
The fan speed can be adjusted
by rotating the switch. To stop
the operation, turn the dial to the
"OFF" position.
The level is adjustable in 7
steps. A/C switch
When pressing the switch with
the engine running, the A/C
compressor operates and the
indicator comes on. Pressing
the switch again deactivates the
compressor and turns off the
indicator.
Fan speed dial ▶

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Face/Foot-Level
(bi-level mode)
Face-Level (vent mode)Foot-Level (foot mode)
Use this switch to remove fog or ice from
the windshield.
When pressing this switch, the airflow
direction will be changed to windshield
and door glasses, the A/C is operated
automatically and the air source mode is
set to fresh air mode. Defrost mode
Temperature dial ▶Mode dial ▶
Recirculation switch
When pressing this switch, the air is
recirculated in the vehicle and the
indicator on the switch comes on.
When pressing it again, the indicato
r
goes off and the fresh air comes in.
When it's rainy or humid, set this
switch to fresh air mode with the
defroster mode selected to clear the
fogged windshield.Foot/Defrost-level
(Foot & defrost mode)
Temperature dial
Rotate this dial to adjust the
temperature.
Turning this switch clockwise
(red side) increases the
temperature and
counterclockwise (blue side)
decreases the temperature.

01-12
3. A/C COOLING CYCLE
1) System flow
Condition: Gas/Liquid
Function: Keeps the refrigerant free from moisture by separating/collecting the moisture from it. -
-"Compression -> Condensation -> Expansion -> Evaporation" -
Condition: Liquefied gas/Gas
Function: Cools the air by absorbing the heat from the air around the evaporator. -
-Condition: Liquid/Liquefied gas
Function: Performs adiabatic expansion and flow control for easier evaporation. -
-Condition: Gas/Liquid
Function: Cools and condenses the refrigerant by using ambient air to liquefy it under high pressure. -
-Condition: Gas
Function: Circulates the refrigerant and increases the pressure and temperature for easier
evaporation. -
- 2) Functions
(2) Condenser
(3) Receiver drier
(4) Expansion valve
(5) Evaporator
(1) Compressor

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The refrigerant is converted from liquid to gas in the evaporator.
(The refrigerant in the form of fog in the evaporator is vaporized actively)
At this time the refrigerant, in the form of liquid, absorbs the heat in the air which is need for
evaporation (latent heat) and is cooled down. Then the blower blows the cooled air inside the vehicle
to lower the temperature.
There are liquid refrigerant from the expansion valve and evaporated refrigerant in the evaporator.
The evaporation temperature can be predicted from the evaporation pressure (i.e. relationship
between saturation pressure and saturation temperature).
It is important to keep the pressure inside the evaporator low, so that the refrigerant is evaporated at
low temperature to make sure the completely evaporated refrigerant is entered into the compressor. -
-
-
-
- (4) Evaporator (3) Expansion (2) Condensation
The liquid refrigerant lowers the pressure making its evaporation easily accomplished.
This process (lowering the pressure to the level at which evaporation easily takes place before the
liquid refrigerant is sent to the evaporator) is called
"Adiabatic Expansion".
During adiabatic expansion, the expansion valve lowers the pressure of the refrigerant and
determines the correct amount of refrigerant going into the air conditioning evaporator.
That is, the amount of heat, which is needed to stop the evaporation, is determined according to the
cooling load.
The expansion valve detects this and regulates the amount of the refrigerant exactly. -
-
-
-
-The high pressure and high temperature gas (refrigerant) from the compressor is cooled down by
the fresh air entered into the condenser. Then, this gas is converted to liquid and collected in the
receiver drier.
The heat generated from the high pressure refrigerant is dissipated to the ambient air, and it is called
"heat of condensation".
The heat of condensation is the summation of the heat of vaporization (heat that the refrigerant
absorbs from the inside of the vehicle) and the calorific value converted from the amount of work
which is needed to compress. -
- 3) Description for Each Cycle
(1) Compression
The evaporated refrigerant in the evaporator enters to the compressor. And the refrigerant gas is
compressed until it can be liquefied at ambient temperature.
Thus, the low refrigerant pressure is maintained so that the liquid refrigerant can be evaporated
actively at low temperature (around 0℃). -
-

01-14
4. A/C COOLING CIRCUIT