NEXON

HVAC 33 Step Inspection Action 13 Inspect a/c compressor oil Is compressor oil darker than normal and contaminated with aluminum chips? Yes Replace A/C compressor and condenser, then go to Step 19 (Since A/C compressor may be worn and receiver/drier may be clogged, replacement of receiver/drier is necessary.) No Condition is normal. Recheck malfunction symp- toms. 14 Verify whether malfunction is in a/c compressor or elsewhere Is noise heard immediately after A/C compressor is stopped? Yes Replace A/C compressor, then go to Step 19. (A/C compressor discharge valve left open) No Go to next step. 15 Inspect drive belt Is it okay? Yes Go to next step. No Adjust or replace drive belt, then go to Step 19. 16 Inspect drive belt condition Is drive belt worn? Does it have foreign material im- bedded in it, or gave oil on it? Yes Remove obstruction, remove oil, or replace drive belt, then go to Step 19. No Go to next step. 17 Inspect magnetic clutch Inspect magnetic clutch. Is it okay? Yes Replace A/C compressor, go to Step 19. No Replace A/C compressor, then go to Step 19. 18 Verify whether malfunction is in a/c compressor or refrigerant lines Is noise emitted from A/C com- pressor? Yes Visually inspect A/C compressor, replace appro- priate parts if necessary, then go to next step. No If noise is due to refrigerant lines, repair de- tached or missing clips, tighten loose bolts, then go to next step. 19 Verify that malfunction symptom occurs after repair Has A/C compressor noise stopped? Yes Troubleshooting completed. No Explain repairs to customer. Recheck malfunc- tion symptoms, then repeat from Step 1 if malfunction recurs.