Auxiliary Air Temperature Actuator -1

The auxiliary air temperature actuator opens or closes the auxiliary air mixture door to a position to divert sufficient air past the heater core to achieve the desired vehicle temperature. The auxiliary air temperature actuator is a 3 wire actuator that incorporates a bi-directional permanent magnet electric motor.

The auxiliary air temperature actuator receives power from the ignition 3 voltage circuit. Ground is provided by the ground circuit through a splice pack. The control of the air temperature actuator is provided by the auxiliary air temperature door control circuit. The auxiliary HVAC control processor provides a varied 12 volt signal to the actuator. This signal is monitored by the logic incorporated in the actuator and it will move the actuator in the desired direction when a position change is requested. When the voltage signal is low a cool air request is made and the voltage signal is high a warm air request is made.