Sonata V6-2.7L (2004)
Refrigerant Pressure Sensor / Switch: Description and Operation
TRIPLE PRESSURE SWITCH
OPERATION
The triple pressure switch is a combination of the low pressure switch (for checking the quantity of refrigerant) and the high pressure switch (for
prevention of air conditioning line burst) and medium pressure switch (for cooling fan operation). It is installed in the receiver drier and, when the
pressure becomes approximately 200 kPa (29 psi) or lower, the compressor stops, thus preventing the compressor from being damaged by sticking.
When the pressure reaches 1,800 kPa (261 psi) or higher, the cooling fans run high speed from low speed, thus preventing the power consumption of
cooling fans from being discharged. When the pressure reaches 3,241 kPa (470 psi) or higher, the compressor stops, thus preventing air conditioning
line burst. There is generally no necessity for inspection; if, however, an unusual condition, such as nonoperation of the compressor is encountered,
check by following the procedures.
