General

The following air valves are used in the distribution system:
- The temperature valve
- The vent valve
- The defroster valve

Within the heater module is a series of air valves. These air valves are hinged parts that act like doors. The air valves direct the airflow through the various sections of the heater module in order to provide the proper airflow for the selected operating mode. A control cable from the heater control assembly actuates each air valve.