STEP INSPECTION ACTION 19 Verify that expansion valve heat-sensing tube within cooling unit is positioned securely and correctly is expansion valve heat-sensing tube within cooling unit securely installed in proper position? Yes Replace expansion valve, then go to next step. (Since valve opens too much, replacement is necessary.) No Install heat-sensing tube securely in proper position, then go to next step. 20 Verify that malfunction symptom occurs after repair does cool air blow out? (Are results of refrigerant system performance test okay?) Yes Troubleshooting completed. Explain repairs to customer. No Recheck malfunction symptoms, then repeat from step 1 if malfunction recurs. HVAC W/O ETC 23
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