DESCRIPTION
The A/C-heater system automatically adjusts passenger compartment temperatures via control unit and A/C-heater control panel. (Scheme 1) A/C-heater control unit regulates heater operation through an electromagnetic water valve. The electromagnetic water valve controls flow rate through heater core.
Air temperature is regulated by mixing varying ratios of cold and heated air through a cable operated temperature mixing flap. Temperature and air distribution for driver-side and front passenger-side can be controlled separately. All outlets can supply heated, cooled or fresh air according to temperature control knob setting. see scheme 2
System uses 6 input sensors for operation: outside temperature sensor, inside temperature sensor, heater core temperature sensor (driver and passenger-side), evaporator temperature sensor and interior temperature sensor. Temperature sensors continuously input information to A/C-heater control unit. A/C-heater control unit processes sensor signals and adjusts system temperature accordingly.
