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REFRIGERATION SYSTEM SYMPTOMS HA-119 < SYMPTOM DIAGNOSIS > [QR25DE] 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 in inner liquid tank Replace condenser. Evaporator becomes frosted. Clogged or crushed low-pres- Repair or replace malfunction- Malfunction in intake air tem- Check intake sensor system. (AUTOMATIC AIR CONDITIONING), AL AIR CONDITIONING). There is a small temperature • Shortage of refrigerant. • Check for leakage. ate refrigerant cycle again, Low-pressure side sometimes be- • Sometimes the area around evaporator outlet • Sometimes the area around evaporator inlet is • Icing caused by the mixing of water in cooler cycle. • Deteriorated dryer in liquid tank. • Collect all refrigerant. completely, and then refill it Hunting in high-pressure side. There is no temperature dif- Malfunctioning variable valve • Replace compressor. HAC-113, "Diagnosis Proce- (AUTOMATIC AIR CONDITIONING),
(MANUAL AIR CONDITION- Gauge indication Refrigerant cycle Probable cause Corrective action AC353A AC354A |