OVERALL SEQUENCE
 
 DETAILED FLOW

 
 1.INTERVIEW FOR MALFUNCTION
 
 2.SYMPTOM CHECK
 
 3.CONTROL SYSTEM DIAGNOSIS
 
 4.PERFORMANCE TEST
 
 5.TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
 
 6.CHECK REFRIGERANT FOR LEAKAGES
 
 7.TROUBLE DIAGNOSIS FOR NOISE
 
 8.MALFUNCTION PART REPAIR
 
 9.REPAIR CHECK (OPERATION CHECK)