Refrigerant Pressure Sensor / Switch, HVAC

RADIATOR FAN AND CONDENSER FAN

A3 A/C SINGLE PRESSURE SW
3 - 2 : Close above approx. 15.5 kg/sq.cm (220 psi, 1520 kPa)
Open below approx. 12.5 kg/sq.cm (178 psi, 1226 kPa)

W3 WATER TEMPERATURE SW NO.1
2 - 1 : Close above approx. 95 °C (203 °F)

W4 WATER TEMPERATURE SW NO.2
1 - GROUND : Close above approx. 90 °C (198 °F)