Samsung AQA07C5(6)ME Service Manual

Contents

Troubleshooting5-3Samsung Electronics5-2-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)1) Checklist :(1) Is the indoor unit fan motor properly connected with the connector (CN72)?(2) Is the AC voltage correct?(3) Is HALL IC in indoor fan motor properly connected with the connector (CN42)?(4) Is the running capacitor (CR71) properly connected with PCB board?2) Troubleshooting procedureAfter unplugging out the power cord shouldbe reconnected within five seconds.Does the STD lamp blink?Does the Solid State Relay(SS71) workproperly?Is the supply voltage of the fanmotor sufficient?Test rod locationPCB CN72 ConditionFan operate about AC 180VNormalvoltagepin #3 and #5YESYESYESNONONOCheck as in the procedure “NO power parts”Refer to page 5-2.Microcomputer is out of order.PCB isout of order.PCB should bereplaced.Replace MFCFan motorshould be replaced.Fan motoris out of order.MF-C is out of orderYES-Test rod location+SS71- SS71- 12VNormalVoltage