Daewoo Solar 225LC-V Shop Manual page 209

High Pressure: Approximately 20 - 25 kg/cm
3
Low Pressure: Approximately 2.5 - 3.5 kg/cm
Possible Cause: Air in system.
1. Recover any remaining refrigerant.
2. Vacuum out system.
3. Recharge system.
NOTE: If the system has been exposed to the air for a long period of time, replace the receiver
dryer.
High Pressure: Over 6 kg/cm
4
Low Pressure: Approximately 760 mmHg (Negative Pressure)
Possible Cause: Refrigerant does not circulate
Step Inspection Item
1. Connect manifold gauge and start engine.
2. Turn on air-conditioner.
3. Set blower switch to HIGH position.
4. Turn air-conditioner OFF and wait 10
minutes.
1
5. Recheck high / low pressure readings.
High Pressure: 13.0 - 19.0 kg/cm
psi)
Low Pressure: 1.5 - 3.3 kg/cm
High Pressure: Over 6 - 18 kg/cm
5
Low Pressure: 500 mmHg (Negative Pressure) - Dial indicator needle unstable.
Possible Cause: Moisture in system has iced up the expansion valve.
NOTE: When the absorbed moisture freezes the pressure readings may look normal. Careful
readings should be made to determine whether pressure is in normal range.
1. Recover any remaining refrigerant.
2. Vacuum out system.
3. Recharge system.
If the system has been exposed to the air for a long period of time, replace the receiver
NOTE:
dryer.
High Pressure: Over 22.0 - 23 kg/cm
6
Low Pressure: 2.5 kg/cm
Possible Cause: Refrigerant pressure problem due to defective expansion valve or temperature sensor.
Step Inspection Item
Inspect whether the temperature sensor is
1
installed properly.
Air-Conditioner
2
(285 - 356 psi)
2
(36 - 50 psi)
2
(85 psi)
2
(185 - 270
2
(21.3 - 46.9 psi)
2
(85 - 256 psi)
2
(313 - 327 psi)
2
(36 psi)
Remedy
Moisture in
Yes
receiver dryer.
Contaminated
expansion valve.
No
(Replace evaporator
assembly.)
Remedy
Yes Replace expansion valve.
No Exchange duct sensor.
system, replace
system, replace
core
S0605060K
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