In  automatic  mode,  the  throttle  is  controlled  by  the  system
automatically.  When  inside  and  outside  circulation  control
button  is  operated,  the  system  will  enter  the  manual  mode.
Cooling  effect  at  high  temperature  is  poor,  in  principle,  the
system maintains the inside circulation, in order to replace the
fresh  air,  ventilation  will  be  carried  out  (keep  20min  inside
circulation, switch to outside circulation for 2min, and then back
to inside circulation, manually switch to the outside circulation
is an exception).

6. Defrosting Control

Defrost button is used to start the windscreen defrost function.
At this point the fan speed is the maximum to exit the inside
circulation  (because  the  inside  circulation  may  affect  the
defrost effect), and issued a request for compressor enabled.

Defrost Status

At  any  working  status  (auto,  manual,  off),  press  the  defrost
button,  the  system  enters  into  the  defrost  mode.  After
defrosting  is  finished,  the  system  returns  to  the  state  before
defrost. (automatic, manual, off).

In the defrost mode, the blower speed adjusts to the maximum,
throttle  position  adjusts  to  blow  the  glass,  the  outlet
temperature  increased  by  a  compensation  constant.
Compressor start, throttle opens as in outside circulation mode.
In the defrost mode, pressing the button will adjust wind speed
to increase or decrease accordingly. Keep defrosting working
condition, the compressor continues to work to keep the wind
blowing glass pattern.

Exit  the  defrost  mode,  the  following  parameters  return  to
previous state:

1. Wind Speed

2. Wind Patterns

In  the  defrosting  process,  in  addition  to  wind  speed,
temperature adjustment, and rear window defrost, operation of
other buttons will cause the system to leave the defrost mode
and  back  to  the  previous  mode  (except  newly  selected
function). Exit defrosting, the system returns to the state before
defrost. (automatic, manual, off).

Rear Defrost Function

Rear defrost button is used for the rear window defrost. During
the  rear  window  defrosting,  LCD  displays  the  corresponding
logos. Press the defrost button again to exit.

7. Automatic and Manual Working Status

System  has  automatic  (AUTO),  Manual  (MANU)  and  stop
(OFF) three states.

Manual mode, to achieve the following features:

–

Manual speed adjustment

–

Manual wind mode control

–

Set  the  automatic  temperature  control  according  to  the
temperature

Automatic mode, to achieve the following features:

–

Automatic speed adjustment

–

Automatic wind control mode

–

Automatic temperature control

8.2.3.2  Automatic  Air-conditioning  Working
Principle

1. System Diagnostics

Through  the  Data  Link  Connector,  air-conditioning  control
module can send the appropriate diagnostic information to the
scan  tool.  Scan  tool  can  read  the  air-conditioning  control
module manufacturers, and software version numbers.

2. Cooling System Working Principle

Heating, Ventilation and A/C System

Automatic Air-conditioning

8-11

Compressor  is  driven  by  the  drive  belt,  which  is  driven  by
engine.  extract  compress  gaseous  refrigerant  from  the
evaporator.  Refrigerant  temperature  rises  to  83-110°C
(181-230 ºF), the pressure reaches 1,470 kPa (213.2 psi). Heat
is  transferred  to  the  condenser  by  high-pressure  refrigerant,
and then taken away by the condenser air. because of the heat
dissipation,  refrigerant  is  cooled.  The  temperature  drops  to
53-70°C (127-158 ºF) under high pressure refrigerant fluid is
sent  to  dryer  storage.  The  reservoir  fluid  dryer  is  an
intermediary,  filters  water  mixed  in  the  refrigerant.  Dried
refrigerant  is  transported  to  the  expansion  valve.  Expansion
valve decompresses the refrigerant, from the expansion valve
the  refrigerant  mist  pressure  is  200  kPa  (29  psi),  the
temperature  drops  to  0-2°C  (32-36  ºF).  Refrigerant  mist  is
heated in the evaporator and evaporates. Finally, the air blower
blows  air  through  the  evaporator  surface  to  each  outlet.
because inside the evaporator refrigerant evaporation absorbs
heat, so the outlet air temperature is far below the environment
temperature. After evaporation the low-pressure refrigerant to
the air stream from the evaporator expansion valve box, at this
time  the  refrigerant  pressure  is  200  kPa  (29  psi),  the
temperature  rises  to  5-8°C  (41-46  ºF).  The  low-pressure
refrigerant returns to the compressor through the air once again
compressed, air-conditioning refrigeration agent completes a
working cycle.

3. Heating System Working Principle

Hot Water Inlet

Warm Water Outlet

Air 
Outlet

Hot Air 
Outlet

Evaporator

Heater Core

Air Inlet

Blower

Fresh Air 
Inlet

Inside 
Circulation 
Air Inlet

FE08-1003b

When  the  automatic  air-conditioning  system  is  in  heating
mode, the heating and cooling control motor will transfer the
temperature control device to warm location, air entering the
heater core has the following effect:

–

Some air by-pass the heater core

–

Heat Transfer

Any air that does not need to be heated will enter the passenger
compartment, mixing with heated air to obtain the appropriate
air  temperature.  Engine  coolant  state  is  a  key  factor  to  the
heater system normal working.

4.  Ventilation  Control  System  Working
Principle

FE08-1004b

A variety of locations in the ventilation control system, enables
the model valve draw cold air, hot air and outside air through
the air duct to the air-conditioning system. Air enters into the
passenger compartment through the air duct.

In the "AUTO (Auto)" mode, the system will automatically select
the  appropriate  mode.  Press  the  "MODE  (mode)"  button  to
change  the  vehicle  air  supply  mode.  If  the  system  currently
displays an air supply mode, press the "MODE (mode)" button
to select the next mode.

Air flow pattern changes according to the following:

–

Face - through the instrument panel air duct

–

Two way - through the instrument panel air duct, floor vent

–

Feet - through the floor vent

–

Mixing - through the floor vent, the Windshield vent

–

Defrosting - Windshield vent

8-12

Automatic Air-conditioning

Heating, Ventilation and A/C System

8.2.4 Component Locator
8.2.4.1  Air-conditioning  System  Component
Component Locator

6

7

8

9

10 11

5

4

3

2

1

FE08-1005b

Legend

1. Floor Air Duct
2. Air-conditioning Panel (Control Module)
3. Air-conditioning
4. Instrument Panel Air Duct
5. Drier
6. Outside Temperature Sensor
7. Condenser

8. Compressor
9. Pressure Switch
10. Air-conditioning Low Pressure Pipe
11. Air-conditioning High Pressure Pipe

Heating, Ventilation and A/C System

Automatic Air-conditioning

8-13

8.2.4.2 Air-conditioning Assembly Component
Locator

8

7

6

5

1

2

4

3

FE08-1007b

Legend

1. Heater Core Inlet and Outlet Pipes
2. Inside and Outside Circulation Control Motor
3. Cold and Warm Air Control Motor
4. Expansion Valve
5. Blower

6. Blower Speed Adjusting Module
7. Air-conditioning Filter
8. Inside Temperature Sensor

8-14

Automatic Air-conditioning

Heating, Ventilation and A/C System