Fan Control

SD DM 07.01.02

The fan switch controls the sleeper HVAC system fan speed. It has 8 fan-speed settings, and an OFF position. To increase the airflow, turn the switch clockwise to a higher number. To decrease the airflow, turn the switch counterclockwise to a lower number. See Fig..

  1. Fan Switch

  2. Temperature-Control Switch

Fig. 1, Sleeper Climate-Control Panel

Note: When the cab A/C is on, even though the sleeper fan switch may be in the OFF position, the sleeper fan will operate at low speed. This is necessary to protect the evaporator in the sleeper HVAC system from freezing.

Note:
Parent topic: Sleeper Climate-Control Panel
Document Number: 0000123220
Manual Publication Date: 2025-01-23
Topic Publication Date: 2025-01-23