operators_manual

1. Sunlight Sensor
Semi-Automatic Mode
During AUTO mode the operator may
override any setting and operate in a semi-
automatic mode. This can be done via the
dials and/or buttons on the HVAC control.
In the partial automatic mode, the AUTO
button indicator will cease to be
illuminated. Instead, the indicator of the
adjusted setting will illuminate. For
example, if the driver adjusts the fan dial
while in AUTO mode, the fan dial indicator
will illuminate and fan speed will adjust to
the setting of the dial. However, the
temperature and air outlet settings will
continue to function automatically.
Similarly, if user adjusts the air distribution
setting while in AUTO mode, the air
distribution dial indicator will illuminate and
the distribution will adjust to the setting of
the dial. The fan and temperature settings
will continue to function automatically.
Economy Function
An economy function is also available in
partial automatic mode. In this mode the
system will operate in AUTO mode without
the use of the A/C compressor. The
operator may select economy by initiating
AUTO mode and then pressing the A/C
button to disengage the compressor. The
indicators for A/C compressor and AUTO
mode do not illuminate while operating in
economy mode.
How to Operate Automatic Cab Air
Conditioner
This air conditioning system feature
provides complete cab climate control
without driver interaction.
Follow these steps to activate the Auto
Mode:
1. Turn on
HVAC by rotating fan
speed control clockwise.
2. To engage automatic mode, press
the AUTO button.
3. To adjust cab temperature, rotate
the temperature dial to the desired
temperature. The system
automatically adjusts to achieve
the desired cab temperature.
The system will achieve the comfort level
associated with the selected temperature
on the temperature dial. Therefore,
depending on the specific environmental
conditions, the air temperature can be
slightly higher or lower than the set point.
This is a normal function of the AUTO
mode and is not to mistaken for a
malfunctioning system.
MAX Defrost Mode
Information on using HVAC maximum
defrost.
The heating and air conditioning system
provides for one touch windshield
defrosting. Certain driving conditions will
cause fog or ice to form on the windshield.
By pressing the MAX defrost button, the
system will automatically adjust the blower
speed, air temperature, and air outlet
CONTROLS - Heating and Air Conditioning
Y53-6047-2HEN (03/18) 117
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