T flashing red 6 times

[Tiger275]

We have been seeing a recurring issue for the past few weeks. It seems that the Gen 2 mobile connector will work most of the time (using a 14-50 adapter on a dedicated 50amp circuit) ...and then every once it a while we get an error and the T (in the TESLA lights) starts to flash red 6 times. According to the manual, this means "Pilot fault. The pilot level is incorrect. Unplug the Mobile Connector from the vehicle and then plug it back in. Try a different outlet. If the error persists, contact Tesla.. "

Any one have any ideas what this means? What is a "pilot fault"? Anything I should check before taking it for service?

Already checked that the connection to the 14-50 adapter is tight (zip tied for security).
Already checked that the wires are securely connected in the outlet on the wall.
Tried unplugging and repluging various times
Only solution seems to be to unplug everything (allow it to reset) and then it works again / or doesn't. No noticable pattern.

 

[qdeathstar]

The breaker is built for a limited number of cycles. If the circuit is protected (separate from the Mobile Connector's built in GFCI) by a GFCI circuit breaker there is minimal risk to the user when plugging or unplugging the Mobile Connector power plug adapter from the NEMA 14-50 240V receptacle while the receptacle is powered.

All breakers are designed for a limited number of cycles.

 

[Whiskeypapa]

How do you know if it's GFCI?

Look at the breaker for the circuit. on the body of the breaker. It will be labeled “GFCI“ or “Ground Fault”

 

[qdeathstar]

How do you know if it's GFCI?

The breaker for it will have a button.

 

[Whiskeypapa]

A gfci isn’t fail safe, and an arc flash could cause more injury than getting shocked.

Both very true. Bottom line: Most people can unplug a live NEMA 14-50 without incident. Some people can find a way to make a phone charger dangerous. If a person feels like they are closer to the latter than the former, then by all means turn off the breaker before unplugging. Better yet, get someone else to do it!

 

[jcanoe]

All breakers are designed for a limited number of cycles.

That's what I meant. You don't want to be flipping any breaker off and on repeatedly.

 

[jcanoe]

How do you know if it's GFCI?

If the circuit breaker is a GFCI type breaker it will have a reset button in addition to the On/Off lever.

 

[qdeathstar]

That's what I meant. You don't want to be flipping any breaker off and on repeatedly.

Yeah, but it isn’t unique to a standard breaker or a gfci breaker.

 

[PianoAl]

It had happened only twice for me.

I took the UMC to the service center, they tested it, found a fault, and replaced it under warranty.