Polaris RANGER XP 900 2018-2019 - Page 202

3.122
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
Expansion Valve: The expansion valve
t
controls the
amount of refrigerant entering the evaporator coil.
Heater / Evaporator Unit: The heater / evaporator unit
y
is located below the dash on the passenger side. The
unit delivers the cold air for the A/C and warm air for heat
into the cab. The unit contains the heat and A/C coils,
thermostat, and expansion valve.
Heater Coil: The heater coil
u
supplies the warm air into
the cab by passing air through the coil.
Evaporator Coil: The evaporator coil
i
cools and
dehumidifies the air before it enters the cab.
Thermostat: The thermostat
o
and probe
a
controls
the temperature of the evaporator coil.
Heater / Evaporator Blower: The blower
s
is used to
pull air through the heater and evaporator coils and into
the cab.
Control Panel: The panel has three separate
components.
Fan Switch: This is a four position rotary switch
d
.
When the fan switch is in the off position the A/C will not
engage, but the heater valve will operate, as it is
controlled by the ignition power.
A/C Switch: The rocker switch
f
will be illuminated
when the A/C is engaged.
Potentiometer: The potentiometer
g
controls the
Heater Valve from fully Off to fully On. This can be used
in conjunction with the A/C for defrost of the windows and
temperature control.
ENGINE / COOLING / HVAC SYSTEM