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Trouble shooting
If show abnormal symptoms during operation, check the cause as followings.
This chapter describes the details of troubleshooting.
Defect
High pressure is
operating at higher
than standard
High pressure is
operating at lower
than standard
Low pressure is
operating at higher
than standard
Cause
1. Air is mixed into the cycle.
2. Overcharged refrigerant
3. Choked and clogged condenser with dust and dirt.
4. Defective condenser fan.
5. Too high ambient temperature when parking.
1. Liquid back symptom: Refrigerant gas, which
enter compressor, contain liqued refrigerant.
2. The expansion valve worn–out
3. Broken discharge valve of compressor.
4. Clogged inlet strainer of compressor.
1. Liqued refrigerant enters compressor.
2. The expansion valve worn–out.
3. Broken suction or discharge valve of compressor.
4. Too much refrigerant in the cycle.
5. Air is mixed into refrigerating cycle.
Measures
1. Discharge the refrigerant completely, charge
refrigerant again to specified amount after
check vacuum.
2. Discharge the refrigerant to specified
amount.(12ť0.5kg)
3. Clean with water or compressed air.
4. Repair or exchange.
5. Reduce the temperature in the shade.
1. Check the sensible bulb to the suction pipe.
2. Replace
3. Replace
4. Check and clean clogged part.
1. Check the sensible bulb sticked to the suction pipe.
2. Replace
3. Replace
4. Discharge refrigerant to the standard level.
5. Charge refrigerant again to specified amount,
after discharging the refrigerant