Heating Mode Indicator; Cooling Mode Indicator; Fan Speed; Recirculate - PREVOST X3-45 COACH 2018 Operator's Manual

located on this panel. To operate, the vehicle's
engine must be running.
The driver's and the passengers'
units may be turned ON by pressing
the ON/OFF button.
Also, the driver's HVAC section turns on
automatically at starting of the engine and uses
the settings that were kept in memory before
turning off of the system.
T he A/C compressor starts automatically when
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the two following conditions are satisfied:
1. T he outside temperature is above 32
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(0°C).
2. The passenger's area temperature has
reached 7°F (4°C) under the set point.
All parameters set before turning the system
OFF will be kept in memory for the next power
ON.
The HVAC module performs a self-diagnosis
every time it is turned ON. Codes are shown on
displays or flashed on control buttons. Refer to
"Maintenance Manual" for more information on
the diagnostic codes.

Heating Mode Indicator

This red LED illuminates when system
is heating.
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Cooling Mode Indicator

This green LED illuminates when the
system is
compressor clutch is engaged).
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Fan Speed

The driver's fan has six speeds.
Increase speed by pressing on the
upper portion of the button, decrease
by pressing on the lower portion.
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Recirculate

Closes or opens the driver's and
passenger's
damper.
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° F
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cooling (when the
section fresh air
PA1627 X3-45 Operator's Manual
Controls and Instruments
A red LED in the top right corner of the button
illuminates when air is recirculated.
faster driver's section heating.
This feature is automatically cancelled when
defogging is activated.

Driver's section temperature setting

The temperature displayed on the
driver's side HVAC control unit is the
temperature set point.
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To increase the temperature set
point, press on the "+" sign, to
decrease the temperature set point,
press on the "-" sign. Temperature
range is between 60°F and 82°F
(16°C to 28°C). On the driver's side
only, asking for a temperature set
point above 82°F (28°C) will keep
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the coolant valve open and "FUL"
will be displayed.
In case of interior temperature
sender unit failure, the coolant valve
will remain open and three lines "---"
will be displayed.
WARNING
Warm temperatures may cause drowsiness
and affect alertness while driving. Keep the
temperature comfortable but not too high.

Passenger's section temperature setting

The temperature displayed on the
passenger's side HVAC control unit is
the actual
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passenger's area.
To increase
temperature
passenger's area, press on the "+" or
the "-" sign. Pressing these buttons
will flash the displayed set point and
the word
Temperature range is between 60°F
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and 82°F (16°C to 28°C).
In case of interior temperature
sender unit failure, the coolant valve
will remain open and three lines "---"
will be displayed.
N OTE
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Upon starting, if the outside temperature is
a bove 32 ° F (0°C) and then drops below
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4-27
Use for
temperature in the
or decrease the
set point in the
"SET" will highlight.
3 2 ° F
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