Abnormal Refrigerant Pressure - SSANGYONG Rexton Y200 Manual

Step
1. Verify whether airflow and excessive refrigerant.
2. Check any restriction at the condenser or radiator.
1
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.
2
3. Check the voltage, rpm, direction of the cooling fan.
4. Repair or replace the applicable 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.
3
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.
4
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.
5
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.
6
Is the repair complete?
1. Check the expansion valve and the compressor for any faulty.
7 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.
8
Is the repair complete?
1. Check the tightening condition of the refrigerant line coupling and
bolts.
2. Check the faulty O-ring.
9
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.
10
3. Replace the faulty compressor.
Is the repair complete?
SSANGYONG Y200

ABNORMAL REFRIGERANT PRESSURE

Action
AUTOMATIC CONTROL HVAC SYSTEM 7D-23
Yes No
Go to Step 2 Go to Step 3
System OK -
Go to Step 4 Go to Step 5
System OK -
Go to Step 6 Go to Step 7
System OK -
Go to Step 8 Go to Step 9
System OK -
Go to Step 10 System OK
System OK -