Indoor UnitMicrocomputer-controlled RoomTemperature ControlAutomatic and 5 Manual VerticalAirflow DirectionsAutomatic and 5 Manual HorizontalAirflow DirectionsAutomatic Operation ButtonPress for < 5s to operate Automatic operation mode.(Used when the remote control cannot be used.)Press continuously for 5s or < 8s to operate TestRun/Pump down. "Beep" sound will be heard.(Used when test running or servicing.)Press continuously for 8s or < 11s to operate ForcedHeating Operation. "Beep, beep" sound will be heard.AUTOOFF / ONOperation Indication Lamps (LED)POWER (Green)......... Lights up in operation,blinks in AutomaticOperation Mode judging,deice, ON Timer samplingand Hot Start Operation.Five Operation ModesHeating, Cooling, Soft Dry, Fan and Automatic Mode.Oxygen OperationTo supply oxygen enrich air.Quiet OperationTo provide quiet operation.Random Auto Restart ControlOperation is restarted randomly after powerfailure at previous setting mode.Delay ON Timer and OFF TimerPress continuously for 11s or < 16s to changedifferent remote control setting (A ↔ B mode),or testify oxygen operation "Beep, beep, beep"sound will be heard.Press continuously for 16s or < 21s to omit orresume the remote control signal receivingsound or H14 Abnormality Detection mode.QUIET (Orange)......... Lights up in Quiet ModeOperation.TIMER (Orange)......... Lights up in TimerSetting. Blinks in SelfDiagnosis Control.(Green) ....... Lights up in OxygenMode Operation.ION (Green) ............ Lights up in IonizerMode Operation. Blinksin Ionizer error.Deodorizing ControlIndoor Power Relay ControlAnti-Dew Formation ControlAnti Freezing ControlLow Pressure Control(Gas Leakeage Detection)Breakdown Self DiagnosisFunctionAnti-Cold Draft ControlHigh Pressure ControlHot StartIntake Air Temperature ControlDeice OperationIonizer ControlAutomatic and 5 Manual IndoorFan SpeedsIonizer control for generate negative ion indischarge air.4CS-XE9CKE CU-XE9CKE / CS-XE12CKE CU-XE12CKE