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Discussion Starter #1
I have been using the Gen 2 EVSE (24277224) at my office with 208V via the cord adapter route. Everything worked great for about 10 months and then intermittently the unit will not charge my vehicle. The DIC shows the plug attached with an "unable to charge" message. This is one of the Clipper Creek units that GM uses for the Gen 2 models.

Anyone else seen this problem and/or have a fix?
 

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Is the EVSE still showing a solid green light?

This happened to mine as well but the EVSE had a flashing red light fault. Unplugging and pluging back in would fix it if I left it unplugged for 15 minutes or so.

The problem kept reoccurring until I left the unit unplugged overnight. Since then it's been going strong again for several months.
 

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I should add I have a 2016 and have been using the 240 volt plug adapter hack since almost day one.
 

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The two lights on the unit will give a code as to what the problem could be. Also, since this is a 208V circuit, there could be a piece of equipment turning on that might be dropping the voltage below the acceptable limit.
 

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I am using my 2016 EVSE with the adapter connected to 240v line for over a year... charge sometimes more than once a day and plugged in over night with no issues. But I put in a dedicated line with nothing else drawing on it.
 

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Remove the hack adapter and plug it in to a good 120v outlet at home. Do it on the weekend when you have time for a 16 hour charge. If the EVSE works on 120 it should work on 240. Shutting off while charging is often because the receptacle is bad and heating up. This will go away by unplugging and waiting a few minutes for the plug to cool. Not being able to charge can also mean a failure of the latch on the J plug to the receptacle on the car. Also inspect the receptacle on the the car and the J plug for dirt, corrosion or damage.
 

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Discussion Starter #8
Got green light always. Same problem @110V, 240 and 208 (work is dedicated one phase of 208, why is it low). Unplugged and replugged no change. I have another hack 240-> NEMA 5-20 @ home on my ClipperCreek 50A circuit, still no charge.

I did clean the pins and sockets with alcohol and I suspect bad science as it worked once. The car's plug works with the original EVSE and my ClipperCreek LCS just fine. The problem seems to be this Gen 2 EVSE. The pilot signal works, as the car knows it the plug has been inserted. It is as if the AC line is not connecting. I am hoping it is something easy to fix, such as "oh, the contactor always causes this". Not sure if there is some other secret masonic handshake I am missing.

I do miss my fastish charging at work going back to 110V!
 

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Are you sure the Pilot signal works? There are two handshake pins. The first phase is detection of the Proximity signal. Proximity initiates the handshake sequence. If Pilot is not the correct voltage or duty cycle, the car will decline to activate charging. Not sure why your EVSE would stop working, unless something broke on the Pilot signal or pin.
 

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Got green light always. Same problem @110V, 240 and 208 (work is dedicated one phase of 208, why is it low). Unplugged and replugged no change. I have another hack 240-> NEMA 5-20 @ home on my ClipperCreek 50A circuit, still no charge.

I did clean the pins and sockets with alcohol and I suspect bad science as it worked once. The car's plug works with the original EVSE and my ClipperCreek LCS just fine. The problem seems to be this Gen 2 EVSE. The pilot signal works, as the car knows it the plug has been inserted. It is as if the AC line is not connecting. I am hoping it is something easy to fix, such as "oh, the contactor always causes this". Not sure if there is some other secret masonic handshake I am missing.

I do miss my fastish charging at work going back to 110V!
If there are no error lights on the EVSE, the car's onboard charger is dropping the charge session. It's probably not an issue with the EVSE or the car, there's a good chance the car is doing its job and protecting itself from "dirty" power.

You said this started up recently, after ~10mos of working fine. If you live in a northern area and the weather is warming up to where AC is ramping up in your work buildings, the compressors, water pumps, and fans could be dragging that 208V leg down in voltage. I think you can log that voltage through the OBD2 port, and see if you can catch it.

EDIT: seeing the problem isn't dedicated to your work connection, your car wouldn't be the first to have its charge port replaced. ;)
 

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Discussion Starter #11
I have a service scheduled next week for the my NYS inspection and look into the axle klunk issues. I will add the EVSE to the ticket and see where that goes. Thanks for the tips Chris
 
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