Refrigerant Pressure Sensor / Switch: Testing and Inspection

Dual Pressure Switch (E17):

DUAL PRESSURE SWITCH
1. Disconnect connector of the dual pressure switch.
2. Install the manifold gauge set.
3. Observe the gauge reading to confirm that refrigerant is sufficient in the air conditioning system.
4. If refrigerant is sufficient, check the continuity between the two terminals of the dual pressure switch shown in the figure. If defective, replace the dual pressure switch.