I found this thread since I'm having the 3 flashing red light issue. I had my electrician come out and replace my breaker as I thought that might be my issue, but my first charge on a brand new breaker and it still does it, slowing down from 48a to 24a. So I call Tesla and they say it is 'working as intended' and they just pushed an update on 9/17 with the latest version which is stepping the unit down until it reaches 90 degrees Celsius. It sounds to me they don't have it dialed in yet as the rep said they hope to fix this issue in a future update.