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Can you describe the "unbranded" unit in more detail? (understand you can't post pics yet)
This is a hardwired install?
Does the car work ok with other L2 charge stations (public stations)?

The plug that plugs into the car is called the J1772 plug. Like you mention, it has L1, L2 "hot" pins, Ground, and two control pins. One is "Proximity", which the car looks for to begin charge sequence, and is also connected to the plug's Switch/Latch. Make sure the Latch clasps onto the car properly. The other control pin is the "Pilot" signal that tells the car the EVSEs amperage capacity, and controls High Voltage on/off to the car.
 

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The car will read the Pilot signal wire to determine how much current it can pull. The car then signals on this same wire to Energize the high voltage to the plug. The car will then draw power as long as it needs. When the car is done, it signals on the Pilot wire back to the off state and the EVSE removes the high voltage.

I could not find seller SICUSALIC on ebay. What current does the EVSE advertise? 15A, 20A? Gen 2 wants to see 16A or more rating from EVSE signal. It will then draw 6 to 16A. (the car can work with lower ratings too) If the EVSE is indicating "Complete", then maybe the car is really telling the EVSE it's done, or the car doesn't like the EVSE's Pilot signal value.

There have been some reports of EVSE Pilot signal incompatibilities, perhaps you found one? Even if it is the Volt's fault, you probably have no re-course but to get another EVSE that has been tested to work on gen 2 Volts. But you mention it had good reviews? On a gen 2 Volt?
 

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Well, good to know your Volt is fine. The 7.2KW, or 30A should be fine. 30A was quite common 3 years ago, before most units moved to 32A.

I wonder if you have a commercial access controlled station? Meaning you have to have the access card or network authentication to energize the unit.

User Authentication: RFID (ISO 14443 Type A/B, Mifare)
Remote ControlProtocol: OCPP 1.5 thru Ethernet / GPRS

If so, hopefully there is some setting to disable access control.
("Power Toggle Switch" ??)

Typical ChargePoint stations require the access card even if they are Free.
 
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