Mode Control Switch

p3 dm 08.01.004

The mode control switch allows the driver to control the flow of air through the face outlets, the floor outlets, the defrost (windshield) outlets, or a combination of these outlets. See Fig..

Face Mode: Directs all airflow through the face or instrument panel outlets.

  1. Face Mode

  2. Selection Between Face Mode and Bi-Level Mode

  3. Bi-Level Mode

  4. Selection Between Bi-Level Mode and Floor Mode

  5. Floor Mode

  6. Selection Between Floor Mode and Defog Mode

  7. Defog Mode

  8. Selection Between Defog Mode and Defrost Mode

  9. Defrost Mode

  10. Bunk-Override Button (on sleeper-cabs only)

Fig. 1, Mode Control Switch With Bunk Override Button

Bi-Level Mode: Directs the airflow equally to the face outlets and the floor outlets.

Floor Mode: Directs all airflow through the floor outlets.

Floor/Defrost Mode: Directs the airflow equally to the floor outlets and the defrost outlets.

Defrost Mode: Directs all airflow through the defrost outlets and activates the air conditioning to assist with dehumidifying the air. The A/C button's LED is not illuminated.

Note: When the defrost is turned off, the A/C is turned off also. Press the A/C button to turn it back on and the LED will illuminate. If the air conditioning is on before a defrost mode is selected, the LED on the A/C button in the cab (and, if equipped, the sleeper) will go out.

Bunk Override Button

The bunk override button, equipped on sleeper cabs only, allows the driver to control the sleeper heat and A/C settings from the cab. See Fig..

Press the bunk override button to turn the sleeper heat or A/C on. An amber indicator will illuminate when bunk override mode is activated.

Press the bunk override button again to turn bunk override mode off. Adjusting the sleeper climate controls at any time will also cause the bunk override mode to cancel.

Note:
Parent topic: Cab Climate Control Panel
Document Number: 0000113576
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-05-06