Samsung AS12SGGE Training Manual

Also see for AQ07P8GE: Owner's instructions Owner's instructions Installation manual Service manual Service manual

Contents

86 | SAMSUNG8 TROUBLESHOOTINGTroubleshooting for Non Inverter Cooling Only (12K) (Cont.)8-3-2. Fault Diagnosis by Symptom No Power (completely dead)-Initial diagnosis1) Checklist :(1) Is input voltage normal? the rating voltage ±10% range.(2) Is AC power linked correctly?(3) Are connections between primary side, secondary side of the power transformer and PCB good.(4) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11VDC-12.5VDC)(5) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC)2) Troubleshooting procedureUnplug the power cord andplug it after 5 secondsPress the Power Button on theremote control unit tooperate the air conditionerCheck whether two wiresof power cord areconnected correctly to theterminal block and control board.Check whether the fuse on thecontrol board is normal.F701: 3.15[A]/250[V]Check the output of SMPSon the control board.Input power: AC230±15%[V]IC02 Input: DC 12[V]IC02 output: DC 5[V] Check the setting temperature Check the indoor unitcontrol board Check the of indoor unit display boardReconnect wires correctlyReplace fuseReplace the control boardoperatedoes not operateYESYESYESNONONO