SiBE31-801_C Troubleshooting by Indication on the Remote ControllerTroubleshooting 3104.51 “U8” Indoor Unit: Malfunction of Transmission betweenMain and Sub Remote ControllersRemoteControllerDisplayU8ApplicableModelsAll indoor unit modelsMethod ofMalfunctionDetectionIn case of controlling with 2-remote controller, check the system using micro-computer if signaltransmission between indoor unit and remote controller (main and sub) is normal.MalfunctionDecisionConditionsNormal transmission does not continue for specified period.SupposedCauses Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PCBTroubleshootingCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Set SS1 to "MAIN"; thepower supply off once andthen back on.YESUsing 2-remotecontrollers control. NONOYESYESNOSS1 of both remotecontrollers is set to"SUB."SS1 of remotecontroller PCBs isset to "MAIN."Turn the power off andthen back on. If amalfunction occurs,replace the remotecontroller PCB.Set one remote controllerto "MAIN"; the powersupply off once and thenback on.
