FATC 17 KNOBS DESCRIPTION: A FATC control panel manages the climate control system, it is the driver's interface to the system. The FATC receives driver's input signal and various input signals from sensors and controls the actuators to maintain driver's desired settings. 1. REAR WINDOW DEMISTER – HRW (IF APPLICABLE) This button turns the rear window demister ON or OFF. The system automatically deactivates. On pressing this button, the LED is illuminated indicating defogging of the rear window. Rear demister/defogger will work only when Engine is ON. 2. MAX DEFROST BUTTON/FRONT DEFOGGER a. This button directs the main airflow towards windscreen for faster defrosting (It also overrides any mode selection you may have made.) b. When you turn off the button, the system returns to its former settings. On pressing this button the LED is illuminated indicating air distribution to max defrost mode is ON. CAUTIONS For your safety make sure you have a clear view through all the windows before driving. 3. AIR DISTRIBUTION (MODE) BUTTON In AUTO mode, the FATC system will regulate the mode automatically. However, user override is possible with the use of MODE button to select the desired airflow. Each time you press the MODE button, the HMI display on the infotainment unit shows the mode selected. The Mode control shall happen either manually or through an automatic climate control algorithm. The simple flow diagram below shall describe the determination of the desired mode position. Mode control during Auto operation The Mode control shall switch to Auto operation after the user presses the Auto button. The climate control algorithm shall determine the desired mode position during Auto operation. The Auto operation shall select among Chest, Chest-Leg and Leg positions during the Auto operation. Since the system is not equipped with sensors to determine the windshield fogging criteria, the Defog and Defrost shall be selectable manually by the user. Mode control during Manual operation The Mode control shall switch to the Manual mode immediately after the user presses the mode button. In the Manual mode, the driver shall select the mode by pressing the mode pushbutton on the control head. The mode shall switch in a cyclic sequence as shown above for each press of the button. The display shall be updated as shown above corresponding to the current selected mode.
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