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REFRIGERATION SYSTEM SYMPTOMS HA-19 < SYMPTOM DIAGNOSIS > C D E F G H J K L M A B HA N O P Both high and low pressure sides • The area around evapora- tor outlet does not become • The area around evapora- tor inlet becomes frosted. Clogged expansion valve. sensor. • Clogging by foreign material. Eliminate foreign material from • There is a temperature dif- ference between the areas • Liquid tank becomes frost- ed. Malfunction inside liquid tank Replace condenser (includes "CONDENSER : Removal and Evaporator becomes frosted. Clogged or crushed low-pres- Repair or replace malfunction- Malfunction in intake air tem- Check intake sensor system. There is a small temperature • Low refrigerant charge. • Recover refrigerant, evacu- ate system, and recharge Low-pressure side sometimes be- • Sometimes the area around evaporator outlet • Sometimes the area around evaporator inlet is • Icing caused by moisture mixed with refrigerant. • Deteriorated dryer material in liquid tank. • Recover refrigerant then re- place condenser (includes "CONDENSER : Removal . • Evacuate system and re- charge with the specified Hunting in high-pressure side. There is no temperature dif- Malfunctioning variable valve • Replace compressor. Refer • Check ECV system. Gauge indication Refrigerant cycle Probable cause Corrective action AC353A AC354A |