Cab Climate Control Panel - freightliner cascadia Driver Manual

Climate Control

Cab Climate Control Panel

The standard cab climate control panel has a fan
switch with a recirculation button, temperature control
switch with an A/C button, and a mode control
switch. See Fig. 8.1. Sleeper cabs are also equipped
with a bunk override button.
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1. Fan Switch
2. Temperature Control Switch
3. Mode Control Switch
Fig. 8.1, Cab Climate Control Panel
Fan Switch
The fan switch activates the fan, which forces fresh
air or recirculated air through the air outlets. The fan
switch has eight fan speed settings and an OFF po-
sition. See Fig. 8.2.
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1. Recirculation Button
Fig. 8.2, Fan Switch
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To operate the fan switch, turn the fan switch clock-
wise to increase airflow; turn the fan switch counter-
clockwise to decrease airflow.
There is a two-second delay between the time the
engine is started and the blower is operational. It can
take an additional four seconds for the blower to
reach high speed. The blower motor performs a self-
test immediately after the engine is started, which
causes the delay. If the vehicle has Optimized Idle,
the fan will not operate with the key in accessory
mode. Optimized Idle may also turn the fan off to
reduce stress on the batteries. Refer to
for more information.
Recirculation
Recirculation mode limits the amount of outside air
entering the cab. Press the recirculation button to
prevent dusty or smoky air from entering the cab.
See Fig. 8.2. Recirculation mode can also decrease
the time required to cool or heat the cab interior dur-
ing extreme outside temperature conditions. When
the recirculation mode is turned on, the amber indi-
cator on the recirculation button will illuminate.
The recirculation button will not work when the mode
control switch is in either defog or defrost modes.
NOTE: To prevent the buildup of odors or oxy-
gen depletion inside the cab, the system
switches from full recirculation mode to partial
recirculation mode after 20 minutes. In ex-
tremely dusty or smoky conditions, the partial
recirculation mode can be overridden by press-
ing the recirculation button twice to obtain full
recirculation mode. This resets the 20-minute
timer.
Temperature Control Switch
The temperature control switch is used to select the
desired temperature in the cab. Turn the switch
counterclockwise for cool air, or clockwise for hot air.
See Fig. 8.3.
Air Conditioning Button
The air conditioner (A/C) cools and dehumidifies the
air inside the cab. Press the A/C button, located in
the center of the temperature control switch, to turn
the air conditioner on and off. See
A/C will be automatically disabled when:
Chapter 11
Fig. 8.3.