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. v. FRESH AIR / RECIRCULATION 1. When the user pushes the Fresh air \ Recirculation button , the LED turns ON, the air inlet door flap shall move to the RECIRCULATION position and air from the vehicle’s interior is sent throughout the system. 2. When the user pushes the Fresh \ Recirculation button and the LED turns off, air is brought in from outside of the vehicle (fresh mode). Whenever discomfort is felt, switch to fresh air mode. 3. The Fresh \ Recirculation control shall switch to Auto operation immediately after the user presses the Auto button. The Climate control algorithm shall calculate the status of the Fresh \ Recirculation door flap. The LED shall not indicate the status of the door flap during Auto operation. It is recommended to run the vehicle in recirculation mode to avoid clogging of air filter. vi. AIR DISTRIBUTION (MODE) 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. NOTE 1. The outside air intakes for the climate control system are at the base of windscreen. Keep this area clear from leaves and other debris. 2.The system should be used with recirculation air mode for faster heat up and cool down, however keeping the system in recirculation mode, particularly with AC OFF, can cause the windows fog up. FATC 15
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