Auxiliary Automatic Operation

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In automatic operation, the auxiliary HVAC control module will maintain the comfort level inside of the vehicle by controlling the auxiliary blower motor, the auxiliary air temperature actuator and the auxiliary mode actuator.

To place the auxiliary HVAC system in Automatic mode, the following is required:

The auxiliary blower motor switch on the front HVAC control assembly must be in the Auto position.
The auxiliary mode switch on the front HVAC control assembly must be in the Auto position.
The auxiliary air temperature switch must be in any other position other than full hot or full cold position.

Once the desired temperature is reached, the auxiliary blower motor, auxiliary mode and auxiliary temperature actuator will automatically be adjusted to maintain the temperature selected. The auxiliary HVAC control module performs the following functions to maintain the desired air temperature:

Monitor the following sensors:
- Inside Air Temperature Sensor-Auxiliary
- Upper Air Temperature Sensor-Auxiliary
- Lower Air Temperature Sensor-Auxiliary
Regulate auxiliary blower motor speed
Position the auxiliary air temperature actuator
Position the auxiliary mode actuator