Got a message on the screen saying that the internal fuses on the HPWC will be upgraded at no cost to me by June 1st. Until then my HPWC is capped at 60 amps.
Well, it's been a few weeks and charging at a full 80amps setting yielded positive results every time. I have not had any blown fuses and no issues whatsoever. I'm starting to suspect that an issue could be with how the install process was completed of certain chargers.
Again, no issues on my end.
I am rmodeling my house including the Garage. I having wiring into 00the garage for 100 Amps. I was able to find NEMA 14-50 at Home Depot. I couldn't find the NEMA 6-50 outlet. Where can we these outlets. I told my electrician to install both 14-50 and 6-50 side by side. 6-50 if for future use when we have HPWC.
If you have twin chargers and have the opportunity to use a Roadster HPC 70A charger by using the Roadster HPC to Model S adapter, the car will now start charging at 60A and ask you if you are plugged into a Model S HPWC.
You can acknowledge the message and crank up the charging rate to 70A for the Roadster HPC. (There are some Roadster HPCs out in the wild in some areas along routes between major cities and they can come in handy if you have the Roadster HPC to Model S adapter.)
I had v.4.3 (1.25.35) before my update to 4.4 and I didn’t get the HPWC fuse advisory until I did the 4.4 update. I called Tesla OE and verified that it is ok to crank up the charging to 70A when using the Roadster HPC. Tesla mentioned that it is working on an update for the HPWC fuse situation. Once we get the update, HPWC charging will no longer be automatically lowered to 60A.
I picked up my MS on Saturday and this use only 60 Amps with the HPWC 17" screen warning is still in effect (for me anyway) even in the current OS - 4.5 (1.33.61) and I believe it is resetting my charge rate to 60 Amps on my evening 12:30 AM recharge. I also have the "C" updated version of the HPWC with the new fuses. I got in the car this morning with the 60 Amp advisory notice on the screen so I experimented. I increased the charge to 85% from my usual 80, adjusted the amperage to 80 and pushed charge. Everything seemed to be fine with the display indicating 79 amps, fluctuating between 227 and 228 volts, and 54 mi/hr and it added maybe 20 miles in a half hour. Will the current software always reduce the programmed early morning charge to 60 amps? It's not like it's monumentally important or anything given the amount of time at night I can charge but I was just curious.
Please post back and let us know after your next scheduled charge.
Yes. It will require you to override the 60A setting each and every time. I have the latest HPWC as well and the SW in the car still has this "feature" even though there is no issue with the "C" version of the HPWC. I assume they will fix this soon in an OS release so that when you set the charge rate to 80A and you have the "C" version of HPWC and you have twin chargers it will remember and keep the 80A setting just like it used to in the early days.
Out of convenience I just force it to 80A when I know I want the extra charge rate for a specific need.
I was doing this same thing forcing it to 80 as I had a new HPWC. Well I guess it got hot enough or something because the fuses blew. They put back the 100A fuses as the 200A ones are in short supply so I stick to 60A for now.
I'm charging at home with the HPWC at 80 amps for 5 days and have no problems. I was topping of the charge to100% for a trip and when I went to disconnect the cable, it was quite hot (cable & handle). What is the operating tempature at 80 amp charge rate?
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