Carrier 42NQV025H Service Manual

Contents

Infrared Rays, 36.7kHzRemote ControllerThermo. SettingFan Speed SelectionON TIMER SettingOFF TIMER SettingLouver AUTO SwingLouver Direction SettingOperation Mode SelectionAUTO, COOL, DRY, HEAT,FAN ONLYREMOTE CONTROLLERECOHi-POWERNight Light42NQV045HM.C.U. Indoor Unit Control UnitFrom Outdoor Unit220-240V ~50Hz Serial Signal Communication(Operation Command and Information)Serial Signal Transmitter/ReceiverConverter(D.C circuit)Noise FilterIndoorFan MotorLouverMotorLouver MotorDrive ControlIndoor FanMotor ControlInitializing CircuitClock FrequencyOscillator CircuitPower SupplyCircuitRoom Temperature Sensor (Ta)Infrared Rays Signal Receiverand IndicationFunctions• Cold draft preventing Function• 3-minute Delay at Restart for Compressor• Fan Motor Starting Control• Processing(Temperature Processing)• Timer• Serial Signal Communication• Clean FunctionOperation (START/STOP)FILE NO. SVM-07013– 28 –