SsangYong Rexton. Service manual - part 633

MANUAL CONTROL HVAC SYSTEM  7C-7

SSANGYONG  Y200

ABNORMAL REFRIGERANT PRESSURE

1. Verify whether airflow and excessive refrigerant.

2. Check any restriction at the condenser or radiator.
3. Check the condenser or cooling fan for proper operation.

4. Check any restriction of the refrigerant lines.

Is the high-side refrigerant pressure high abnormally?
1. Recover, evacuate and recharge the A/C system according to the

specified value.

2. Clean the condenser or radiator core.
3. Check the voltage, rpm, direction of the cooling fan.

4. Repair or replace the appropriate parts as needed.

Is the high-side pressure within the specified value?
1. Check the amount of the refrigerant.

2. Check the internal faulty of the compressor.
3. Check the faulty of the expansion valve.

4. Check the moisture mix into the system.

Is the high-side refrigerant pressure low abnormally?
1. Replace the compressor and the expansion valve as needed.

2. Recover, evacuate and recharge the A/C system according to the

specified value.

3. Repair any leaks as needed.

Is the repair complete?

1. Check the freezing/clogging of the expansion valve.
2. Check the clogging of the receiver-drier.

3. Check the amount of the refrigerant.
Is the low-side refrigerant pressure low abnormally?

1. Clean the expansion valve and replace it as needed.

2. Replace the receiver-drier as needed.
Is the repair complete?

1. Check the expansion valve and the compressor for any faulty.
2. Check the excessive amount of the refrigerant.

Is the low-side refrigerant pressure high abnormally?

1. Replace the expansion valve and the compressor as needed.
2. Add the specified amount of the refrigerant.

Is the repair complete?
1. Check the tightening condition of the refrigerant line coupling and

bolts.

2. Check the faulty O-ring.

3. Check the faulty gasket or seal of the compressor.
Is there any refrigerant leak?

1. Tighten the bolts.
2. Replace the faulty O-ring.

3. Replace the faulty compressor.

Is the repair complete?

Step

Action

1

2

3

4

5

6

7

8

9

10

Yes

Go to Step 2

System OK

Go to Step 4

System OK

Go to Step 6

System OK

Go to Step 8

System OK

Go to Step 10

System OK

No

Go to Step 3

-

Go to Step 5

-

Go to Step 7

-

Go to Step 9

-

System OK

-

SSANGYONG  Y200

7C-8  MANUAL CONTROL HVAC SYSTEM

REPAIR INSTRUCTIONS

ON-VEHICLE SERVICE

CONTROL SWITCH ASSEMBLY

1. Remove the center instrument panel.

2. Remove four screws securing the A/C control

switch assembly.

3. Remove the A/C control switch assembly from the

instrument panel.

YAD7C010

YAD7C020

YAD7C030

MANUAL CONTROL HVAC SYSTEM  7C-9

SSANGYONG  Y200

4. Installation should follow the removal procedure

in the reverse order.

Notice: Insert connector to the switch and then
assembly the

YAD7C040

SECTION 7D

AUTOMATIC CONTROL HEATING,

VENTILATION AND AIR CONDITIONING

SYSTEM

TABLE OF CONTENTS

Description and Operation ................................... 7D-2

General ............................................................... 7D-2

FATC Control ....................................................... 7D-3

FATC Input/Output Routing Diagram .................... 7D-4

FATC System Characteristic ................................. 7D-5

System Basic Function ........................................ 7D-6

System Components – Control ............................. 7D-8

Specifications .................................................... 7D-13

Diagnostic Information and Procedures ............ 7D-14

General Diagnosis ............................................. 7D-14

Insufficient Cooling Diagnosis ............................ 7D-15

Full Automatic Temperature Control (FATC) Does

Not Operate When The Ignition Is On .............. 7D-17

Controller Does Not Illuminate When Light

Switch Is On ................................................... 7D-17

No Hot Air From Blower ...................................... 7D-18

Blower Motor Does Not Run At All ...................... 7D-19

No Cool Air From Blower .................................... 7D-21

Mode Controls Does Not Work ........................... 7D-22

Mode Controls Does Not Work ........................... 7D-22

Abnormal Refrigerant Pressure .......................... 7D-23

Compressor Magnetic Clutch Does not Engage .. 7D-24

Inside Air Temperature Sensor Error ................... 7D-24

Ambient Air Temperature Sensor Error ................ 7D-24

Coolant Temperature sensor Error ...................... 7D-25

Air Mix Door Error .............................................. 7D-25

Sun Sensor Error ................................................ 7D-27

Power Transistor Error ........................................ 7D-27

Max-High Relay Error ......................................... 7D-28

Repair Instructions .............................................. 7D-29

On-vehicle Service ................................................ 7D-29

Control Switch Assembly ................................... 7D-29

Blower Motor ..................................................... 7D-30

High Blower Relay ............................................. 7D-31

Blower Motor Resistance (Power Transistor) ....... 7D-31

Air Mix Door Actuator ......................................... 7D-31

Mode Control Door Actuator ............................... 7D-32

Sun Sensor ........................................................ 7D-32

Inside Air Temperature Sensor ........................... 7D-32

Ambient Air Temperature Sensor ........................ 7D-33

Coolant Temperature Sensor .............................. 7D-34