Refrigerant Pressure Sensor / Switch: Testing and Inspection
A/C PRESSURE TRANSDUCERINSPECTION
1. Measure the pressure of high pressure line by measuring voltage output between No. 1 and No. 2 terminals.
2. Inspect the voltage value whether it is sufficient to be regular value or not.
Voltage = Vdd * (0.025 * P + 0.1) [Kgf/sq.cm]
Voltage = Vdd * (0.254929 * P + 0.1) [Mpa]
Voltage = Vdd * (0.001758 * P + 0.074162 [PSIA]
3. If the measured voltage value is not specification, replace the A/C pressure transducer.