The invention discloses a manual air conditioning system with a fault diagnosis function and a fault diagnosis method thereof. The manual air conditioning system comprises a high-low voltage switch, an external temperature sensor, an air conditioner controller, an engine control unit, a vehicle body control unit, an evaporator temperature sensor, a throttle actuator, an air blower, a vehicle storage battery, a compressor and a back defrosting heater; the air conditioner controller, the engine control unit and the vehicle body control unit are connected with a CAN bus, the evaporator temperature sensor, the throttle actuator, the air blower and the vehicle storage battery are connected with the air conditioner controller, the compressor is connected with the engine control unit, and the back defrosting heater is connected with the vehicle body control unit; one end of the high-low voltage switch is grounded, the other end of the high-low voltage switch is connected with the air conditioner controller, and the external temperature sensor is connected with the air conditioner controller. The fault diagnosis method comprises diagnosis methods for air conditioning pipeline pressure abnormity, throttle actuator clamping or open circuit or short circuit, external temperature sensor and evaporator temperature sensor open circuit or short circuit and vehicle storage battery voltage abnormity. According to the manual air conditioning system with the fault diagnosis function and the fault diagnosis method thereof, starting faults of the compressor can be quickly and accurately judged, and the troubleshooting efficiency is improved.


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    Title :

    Manual air conditioning system with fault diagnosis function and fault diagnosis method thereof


    Contributors:
    DU MINGCHENG (author) / XUE XIAOBO (author) / YAO CHONGTAO (author) / XIA YONGFENG (author) / YOU DIAN (author)

    Publication date :

    2015-10-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht




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