Hello all, I just moved into an apartment where they have Coulomb chargers that were installed around 2010 and haven't been used until I got here. For some reason, I get a "GROUND FAULT" from the charger every time I try to charge, and my Roadsters says "line voltage lost sync ID:954 Data:0x00200000" I've tried every sequence of restarting, and even got it to start charging once, but never since. I read about the new 4.6.8 firmware release from January in another thread here (thanks, Tom!), and Tesla Service was kind enough to install this for me on the same day. But upon returning to the charger, it did not help. I suppose the firmware changes were to address problems in other brands of chargers, or perhaps for newer revisions of the Coulomb. It seems to me that a 2010 model charger might not have all the latest updates with regard to the ever-changing J-1772 and other charging standards. But when my apartment's maintenance manager called Coulomb, they seemed to think there couldn't possibly be a problem. Note that shortly after I moved in, a Tesla Model S owner got the charger right next to mine, and his Model S is charging fine with the appropriate adaptor. Coulomb seems to think that if their hardware charges one Tesla then it can charge any Tesla, and claims that there must be a problem with my car. However, I've charged on several other systems with no problems (other than the charger overheating), and we all know that the Roadster is not the same charging internally as the Model S. I'm assuming that owners on this forum probably know more about Coulomb chargers than the telephone operator in their support section. ... or at least I hope somebody here has a clue about what could be wrong. These chargers are permanently wired via conduit, so there's no extension cord to suffer a real ground fault. I'll grab the model number from the Coulomb charger in a minute and edit this post to document that. Thanks! p.s. the charger supplies 30 A, and my Roadster shows a healthy 208 V 30/30 A on the display until the charging fails.