7GB-41. READ BEFORE OPERATING2. OPEATIONFunction indicators on indoor unit display panelInfrared signal receiverTemperature indicatorOperation lampTimer lampAlarm lampManual buttonThis switch is used for after-salesservice purpose only,the usershould not push it.Illuminate during TIMER operationIlluminate during DEFROST operationReceive the signal from remote controllerIndicate the room temperatureFlash when unit in failure statusIlluminate during operationDEF./FAN lampDISPLAYAll the pictures in this manual are for explanation purpose only. They may be slightly different from the airconditioner you purchased (Model dependent).The actual shape shall prevail.A guide on using the remote controller (or wired controller) is included in this literature packaged.NOTE2.1 OPEATING CONDITIONSMANUAL OPERATION TIMER DEF./FAN ALARMLower limitOpeating ConditionsUpper limitIndoor Outdoor46 °C DBUpper limitHeating OperationLower limitCooling OperationNote: DB - Dry Bulb18 °C DB32 °C DB27 °C DB-10 °C DB0 °C DB24 °C DB-15 °C DBOptimum performance will be achieved within these operating temperatures.When the unit operates above or below these conditions for a long time, systemdiagnostics may detect a malfunction and the unit will not operate properly.Room relative humidity - less than 80%. If the air conditioner operates outside this range,the surface of the air conditioner may attract condensation.