5.HVAC SYSTEM
5-6
receives the high pressure, high
temperature refrigerant vapor from the
compressor and condenses it into a high
temperature liquid.
NOTE
If you need to remove the pipe,
please refer to the refrigerant discharge and
filling first.
Evaporator
The evaporator is also a kind of heat
exchanger, but opposite to the condenser,
its function is to vaporize the
low-temperature and low-pressure
refrigerant liquid after throttling, absorb a
lot of heat in the air in the car, so as to cool
the air in the car.
TXV
① The high temperature and high pressure
refrigerant liquid is changed into low
temperature and low pressure refrigerant
liquid by throttling and depressurizing, and
then sent to the evaporator for evaporation.
② Adjust the flow of refrigerant according
to the change of refrigeration load, so as to
keep the temperature in the car stable and
t h e r e f r i g e r a n t w o r k i n g n o r m a l l y.
③ Control refrigerant flow to prevent liquid
hammer and abnormal over heating.
NOTE: The TXV and evaporator are an
assembly. If the TXV is broken, the whole
assembly needs to be replaced.
Pressure switch
The pressure switch which protects the
system in normal pressure. is installed on
the condenser-evaporator hose.
Unplug the connector of pressure switch
and measure the two terminals.
Set the multimeter to “DIODE”
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