Mine did this today for the first time in like 7 months. This is the replacement unit because my original charger was doing this.
Is your replacement unit an "F" revision or a "G" revision? (You can tell by checking the last digit of the unit's part number).
I'm getting this issue as well (3 red flashes while I have the green stream as it's charging). I didn't see this until I was notified that 2021.4.3 was available for my S. It has happened at least 2 times. I'll call the 510-249-2490 number in a bit since they are on Pacific...
I've been fighting this issue for 9 months. (3 red flashes while I have the green stream as it's charging) I've decided to tear it off the wall and just let an election put in a 50 amp wall connect. Just a pain, I called the number and got snapped at.
Is yours connected to WiFi? They were pleasant with me, didn’t even have to try to steer the conversation.
The temperature sensor is in the backplate, so the whole unit should be replaced, not just the faceplate. I had this issue starting in January. Power reduced to 33 Amps from 48 Amps.They sent me the Part Number 1457768-01-G version of the wall connector. No issues since the electrician replaced the entire unit.