Just got charging error 981 while trying to charge using the UMC with a 10A adapter (using a standard Swiss socket which are rated 230V/10A - 2.3kWh is better than nothing).
I plugged the UMC to a socket which was on the end of my extension cord. Looks like the UMC checks if it detects a significant voltage drop when testing the power line. I guess that i have a voltage drop of around +/-20V due to the long cord (~100 ft from the socket.). So I got error #981 "Charging Problem" all the time - the Roadster only reached the blinking blue status before turning to red. Finally connecting directly to another 10A socket nearby yielded no error.
So if you get #981 it's most probably due to bad wirings...
I plugged the UMC to a socket which was on the end of my extension cord. Looks like the UMC checks if it detects a significant voltage drop when testing the power line. I guess that i have a voltage drop of around +/-20V due to the long cord (~100 ft from the socket.). So I got error #981 "Charging Problem" all the time - the Roadster only reached the blinking blue status before turning to red. Finally connecting directly to another 10A socket nearby yielded no error.
So if you get #981 it's most probably due to bad wirings...
