Troubleshooting (OP: Central Remote Controller) Si39-302218 Troubleshooting3. Troubleshooting (OP: Central Remote Controller)3.1 ìUEî Malfunction of Transmission Between CentralRemote Controller and Indoor UnitRemoteControllerDisplayUEApplicableModelsAll models of indoor unitsRXYQ5~48MMethod ofMalfunctionDetectionMicrocomputer checks if transmission between indoor unit and central remote controller isnormal.MalfunctionDecisionConditionsWhen transmission is not carried out normally for a certain amount of timeSupposedCauses! Malfunction of transmission between optional controllers for centralized control and indoor unit! Connector for setting master controller is disconnected.! Failure of PC board for central remote controller! Defect of indoor unit PC boardTroubleshootingCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Is thepower supply turnedon for indoor units displayingmalfunction?Istransmission wiringdisconnected or wiredincorrectly?Is thetransmission wiringwith the master controllerdisconnected or wiredincorrectly?Is themaster controller'sconnector for settingmaster controllerdisconnected?Set the group No. correctly.Replace indoor unit PCboard.Fix the wiring correctly.Fix the wiring correctly.Connect the connectorcorrectly.Replace the central PC board.Reset power supplysimultaneously for all optionalcontrollers for centralizedcontrol.YESYESNOYESYESYESYESTurn indoor unit's powersupply.YESNONONONONONOHasan indoor unit onceconnected been removeor its addresschanged?Is the groupNo. of malfunctioningindoor units set?Is transmissionwith all indoor unitsmalfunctioning?(V2832)
