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Air Door Position Sensor / Switch: Testing and Inspection
TEMPERATURE ACTUATOR POTENTIOMETER
1. Temperature control actuator is installed in the heater unit case. The control switches and the vent duct switch will operate actuator to regulate the temperature and discharge air.
2. Verify that the temp actuator operates to the warm position when connecting 12 V to the terminal 1 and grounding terminal 5.
3. Verify that the temp actuator operates to the cool position when connecting in the reverse.