hyundai Workshop Repair Guides

Hyundai Workshop Service and Repair Manuals

Refrigerant Pressure Sensor / Switch, HVAC|Description and Operation|Page 9966 > < Evaporator Temperature Sensor / Switch|Testing and Inspection
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Refrigerant Pressure Sensor / Switch: Description and Operation

DUAL PRESSURE SWITCH

The dual pressure switch is a combination of the low pressure switch (for checking the quantity of refrigerant) and the high pressure switch (for
prevention of overheating). It is installed in the receiver, and, when the pressure becomes approximately 200 kPa (29 psi) or lower, the compressor
stops, thus preventing the compressor from being damaged by heat.

When the pressure reaches 3,241 kPa (470 psi) or higher, the compressor stops, thus preventing overheating. There is generally no necessity for
inspection; if, however, an unusual condition, such as non-operation of the compressor is encountered, check by following the procedures below.

Refrigerant Pressure Sensor / Switch, HVAC|Description and Operation|Page 9966 > < Evaporator Temperature Sensor / Switch|Testing and Inspection