Manual Controls - Peterbilt 348 2017 Operator's Manual

Manual Controls

What Each Control Does
Fan Speed Adjustment
Turning this dial clockwise from the OFF
position turns the fan ON and increases
the fan speed.
Air Flow Control Dial
This dial directs the air flow through 5
primary sets of vents:
Instrument Panel and
De-mister Vents
Instrument Panel, De-mister
and Floor Vents
Floor and De-mister Vents
(03/17)
Floor, De-mister Vents and
*Defrost Vents
*Defrost and De-mister Vents
*Fresh air and air conditioning are
automatically turned ON.
Temperature Control Dial
Turn this dial clockwise for heat,
counterclockwise for cool.
Y53-6060-1C1
HEATING AND AIR CONDITIONING
Air Conditioner Switch
This button turns the A/C compressor on
and off. When using the Max Def function
the user will not be able to turn off the AC
compressor with this button.
NOTE
Fan Control Dial must also be
in the ON position for A/C to be
on. A/C engages automatically
in AUTO, defrost and floor/de-
frost.
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