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Refrigerant Pressure Sensor / Switch: Testing and Inspection

A/C PRESSURE TRANSDUCER

INSPECTION

1. Measure the pressure of high pressure line by measuring voltage output between NO.1 and NO.2 terminals.
2. Verify that the voltage value is within specification.

Voltage = 0.025 * Pressure + 0.1 [kgf/sq.cm]
Voltage = 0.001758 * Pressure + 0.074162 [PSIA]

3. If the measured voltage value is not specification, replace the A/C pressure transducer.