Check Si04-11592 Service Diagnosis6.1.9 Hall IC CheckCheck No.16 1. Check the connector connection.2. With the power ON, operation OFF, and the connector connected, check the following.∗Output voltage of about 5 V between pins 1 and 3.∗Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.Failure of (1) $ faulty PCB $ Replace the PCB.Failure of (2) $ faulty hall IC $ Replace the fan motor.Both (1) and (2) result $ Replace the PCB.6.1.10 Refrigerant System CheckCheck No.17Is any moisturefound in sight glass.Is thedischarge thermistordisconnected fromthe holder?YESIsthe temperatureof 4 way valve suction pipeabnormaly high?Check for gas leaks. See thesection on insufficient gasdetection.Refrigerant system check (gasleaking, short of gas)NONONOYESYESConnect thermistor to holder properly.Conduct vacuum drying.Faulty 4 way valve, replace 4 wayvalve.Replace the refrigerant.(R1079)Conduct the check after operating theequipment for a sufficient length of time.
