Also have this problem with Eaton EVSE and the 6.6kW onboard charger in the Pittsburgh, PA area.
First - there is a workaround to get it to charge. The Giant Eagle Market District Grocery store EVSE units both have this problem and I’ve been able to successfully charge by clicking on the reset button above the error symbol (read circle) multiple times, basically click if you get the red circle then wait a few seconds and click again. It usually takes about 3-10 clicks. The Leaf will beep after a “successful” click, that’s a good sign, but the red circle will still appear, at that point just click once more and it will start charging right away, very annoying. Occasionally after clicking several times, a red wrench icon will appear and at that point there’s nothing you can do, you can report it to the store but all they will do is call somebody to have it fixed within a few days.
Here is some additional info that another Leaf owner compiled on this issue: http://dellin.net/leaf/
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This can be permanently fixed at the with a firmware update on the Eaton EVSEs. The problem is that these units are typically maintained by a third party and it's a big hassle to get them to first understand the problem, and then get them to fix it. From my experience the grocery store managers rarely care as to whether these units are working.
Carnegie Mellon University has an Electric Car Garage (http://www.chargecar.org/
" onclick="window.open(this.href);return false;) and all their EVSEs were Eaton chargers and had this problem. After several calls between the Garage manager, Eaton and the 3rd party company that services the units they eventually upgraded the firmware and problem solved! But it took several weeks to get there and the difference was thad the garage manager did care about this problem