Submitted by mcdonalk on August 1, 2018
Our Powerwall 2's are configured for self-powered mode with a 50% reserve. I tried to increase the reserve, but a popup indicated "ERROR failed to save backup reserve," and the reserve was unchanged at 50%. I have changed the reserve successfully as recently as two days ago. My app did not update; I have been running the same version for a month. However, I noticed that "advanced" mode is now available for the first time; it wasn't an option two days ago when I last changed the backup reserve, so something changed.
I called Tesla, and they could not change my reserve either, and they believe that the problem may be on their end, and it may take several days to resolve. Has anyone else here had a similar problem?