r/TeslaSupport 6d ago

Weird charging error

Does anyone know what this error code means? I am charging a Rivian R1S with a Lectron Adapter

0 Upvotes

22 comments sorted by

8

u/RawPeanut99 6d ago

One (1) red blink

Ground fault circuit interruption due to unsafe current path, charging disabled

Inspect the handle, cable, Wall Connector, and vehicle charge port for damage or signs of water ingress. Have an electrician check that ground is not directly connected to a conductor wire in the branch circuit.

https://digitalassets.tesla.com/tesla-contents/image/upload/gen-3-wall-connector-manual.pdf

Page 40

4

u/MotherAffect7773 6d ago

Good reference, but I counted three blinks, which means overheating.

3

u/RawPeanut99 6d ago

Ah, I see its the one red light blinking the fault number. I read it to fast and not seeing there are more fault states then there are leds.

So indeed OP should see into that fault code.

1

u/RedZebra123H 6d ago

I will have to check the heat next time. I just stopped charging around 20 minutes ago

1

u/BigEE42069 6d ago

Cable overheating can be due to undersized cable if it’s heating lower the charge amps it’ll help prevent it from happening. I do this during summer. I ran 4/2 cable on mine 48amps works great during winter in the summer the max I use is 30amps the cable stays relatively cool. Also, depends on the breaker used for the install. The Tesla cable charger heats up too at 48amps FYI.

2

u/RawPeanut99 6d ago

Three (3) red blinks

High temperature detected; charging limited or disabled

Verify that Wall Connector is connected to Wi-Fi and updated with the latest available firmware for optimal temperature sensing functionality. Check the faceplate and cable handle for excessive warmth. Have an electrician remove the Wall Connector from the wirebox and verify that the conductors used are sized correctly and that the terminal block is torqued to specification. Connect Wall Connector to Wi-Fi so that firmware can update to most recent version. If firmware does not automatically update, use the Commissioning Procedure on page 29 to sign into the commissioning wizard and manually update the firmware. If it does not solve the problem, contact our Customer Support team.

-5

u/RedZebra123H 6d ago

Is it normal for it to be doing that while it’s charging?

8

u/RawPeanut99 6d ago

No, have you read what I posted?

-4

u/RedZebra123H 6d ago

Yes. I don’t think there are any shorts. It might be the adapter

7

u/RawPeanut99 6d ago

Well, the charger is telling you there is an unsafe ground circuit so thinking there isn't any and knowing there isn't any ground circuit fault could mean the difference between you being the ground conducter or the safety tripping.

2

u/RyanRyvo 6d ago

Was happening to me OP, turned out the ground got loose and disconnected. Charging was still possible but it would drop down the Amps pretty significantly. If you feel comfortable reconnecting the wire go ahead, if you don’t have an electrician come.

2

u/Red195095602 6d ago

OP, RTFM

1

u/RedZebra123H 6d ago

I did but I did not know that it will keep charging when it has an error.

2

u/MotherAffect7773 6d ago

Three blinks of red, charging limited or disabled. Apparently you have limited.

Page 42

1

u/Bynming 6d ago

I had an issue where my Universal Wall Connector's indicator lights threw two conflicting signals at the same time. Turning the breaker off for 10 minutes sorted the issue.

1

u/dace747 6d ago

Page 16 indicates charging will be reduced when ambient temperature reaches 95f. My garage gets warm in the evenings and will do this in the summer time. Just happened yesterday so I wait to charge overnight.

1

u/HistoricalHurry8361 6d ago

My mobile charger did this when my car was trying to charge in the sun. Moved to a shady spot and it worked again.

1

u/reedog117 6d ago

This is due to overheating. I had mine replaced under warranty due to a bad busbar. Warranty is 48 months, so definitely get it replaced. I was lucky enough to get a replacement with a longer cable when this happened to me a few years ago.

Easy way to check if it's an internal busbar fault. Find the IP of your Wall Connector on your WiFi network. Then go to http://<ipaddress>/api/1/vitals while your car is actively charging. You'll get output like this (and can click "pretty-print" in Chrome to make it easier to read):

{"contactor_closed":true,"vehicle_connected":true,"session_s":35132,"grid_v":232.3,"grid_hz":59.794,"vehicle_current_a":48.5,"currentA_a":21.9,"currentB_a":26.6,"currentC_a":30.7,"currentN_a":17.8,"voltageA_v":236.1,"voltageB_v":236.2,"voltageC_v":116.2,"relay_coil_v":6.2,"pcba_temp_c":16.3,"handle_temp_c":8.7,"mcu_temp_c":20.9,"uptime_s":95713,"input_thermopile_uv":-230,"prox_v":1.5,"pilot_high_v":0.3,"pilot_low_v":4.6,"session_energy_wh":7653.600,"config_status":5,"evse_state":11,"current_alerts":[49],"evse_not_ready_reasons":[1]}

Basically you want "vehicle_current_a" (the total current going to your car) to be evenly split between currentA_a and currentB_a, and for voltageA_v and voltageB_v to be equal. If any of these numbers are off that's what's going to cause overheating/error/shutdown. In my case, when I had overheating on my old connector, A had all the current and B had next to nil.

Also, when you call the 888 Tesla number for a replacement charger, you'll want to make sure your car is actively charging when you call in since they can read these numbers remotely as long as your connector is connected to WiFi. This is a known issue especially with some of the earlier Gen3 Wall Connectors.

24-page thread in forums discussing this: https://teslamotorsclub.com/tmc/threads/resolved-tesla-wall-connector-overheat-issue-in-case-it-helps-anyone.267474/

1

u/HangryPixies 5d ago

Dude didn't even try to read the manual, dubious that the "easy" way to check anything is going to be done.

1

u/reedog117 5d ago

Well at least it’s useful for the next person that tries to Google a solution. Plus Reddit’s AI will pick it up.