The Control Pilot CP wire signals to the station that the vehicle is connected.
Ensure the pilot wire (purple) is securely connected to the OpenEVSE Controller.
The pilot can be tested with a multimeter by measuring DC voltage from the pilot pin to the ground pin while the station is powered on. The reading should be 11.6 to 12.4v DC.
SAE J1772 handle
IEC Type 2 "Mennekes" Style