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NOISE HAC-115 < SYMPTOM DIAGNOSIS > [WITHOUT 7 INCH DISPLAY] C D E F G H J K L M A B HAC N O P NOISE Description INFOID:0000000005514657 Symptom • Noise Inspection procedure INFOID:0000000005514658 1. CHECK OPERATION 1. Operate the A/C system and check the operation. Refer to HAC-7, "Description & Inspection" 2. Check the parts where noise is occurring. Can the parts where noise is occurring be checked? YES-1 >> Noise from blower motor: GO TO 2. >> INSPECTION END 2. CHECK BLOWER MOTOR 1. Remove blower motor. 2. Remove foreign materials that are in the blower unit. 3. Check the noise from blower motor again. Is the inspection result normal? YES >> INSPECTION END NO >> Replace blower motor. 3. CHECK COMPRESSOR Perform trouble diagnosis for the compressor and check the compressor. Refer to Is the inspection result normal? YES >> INSPECTION END NO >> Refill the refrigerant or replace the compressor according to the inspection results. 4. CHECK WITH GAUGE PRESSURE Perform the diagnosis with the gauge pressure. Refer to HA-8, "Trouble Diagnosis For Unusual Pressure" . Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace parts according to the inspection results. 5. CHECK EXPANSION VALVE 1. Correct the refrigerant with recovery/recycling recharging equipment. 2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant. 3. Check for the noise from expansion valve again. Are the malfunction solved? YES >> INSPECTION END NO >> Replace expansion valve. 6. CHECK A/C PIPING (PIPE, FLEXIBLE HOSE) 1. Check the A/C piping (pipes, flexible hoses) (for deformation and damage, etc.). 2. Check the installation condition of clips and brackets, etc, of the A/C piping (pipes, flexible hoses). Is the inspection result normal? YES >> Fix the line with rubber or come vibration absorbing material. NO >> Repair or replace parts according to the inspection results. 7. CHECK DRIVE BELT |