2015 MS 85 w/ dual chargers.
Gen 2 HPWC on 100amp sub panel, charger set to 80amps.
I remodeled a home and moved in 3mo ago. All new 200a panel and electrical. 100a sub panel run to garage and connected to HPWC 2 ft away.
I usually charge at 48a
A few weeks ago after being plugged in and not charging for at least 15-30min, the max charge rate drops to 32a or sometimes 54a. It doesn’t happen every time, but it’s happening more frequently and I’m guessing is dropped before and I never noticed.
When I unplug and plug back in, the max charge rate always goes back to 80a, and if i start charging immediately I can charge at any amps with no issues. Yesterday I charged at 80a for over an hour with no issues.
The charger, panel and sub panel breakers barely get warm. At 80a my voltage is around 228v
I have reset the MCU (replaced last year) multiple times, along the cycling the breaker and using the reset on the HPWC.
I am trying to figure out if it’s the HPWC gen 2 (less than 1yr old), the onboard car chargers, the charge port itself, or a glitch in the MCU 1 software
This forum has been extremely informative in the past. I tried searching for the issue and haven’t had any luck.
Any insight is very appreciated!!
Gen 2 HPWC on 100amp sub panel, charger set to 80amps.
I remodeled a home and moved in 3mo ago. All new 200a panel and electrical. 100a sub panel run to garage and connected to HPWC 2 ft away.
I usually charge at 48a
A few weeks ago after being plugged in and not charging for at least 15-30min, the max charge rate drops to 32a or sometimes 54a. It doesn’t happen every time, but it’s happening more frequently and I’m guessing is dropped before and I never noticed.
When I unplug and plug back in, the max charge rate always goes back to 80a, and if i start charging immediately I can charge at any amps with no issues. Yesterday I charged at 80a for over an hour with no issues.
The charger, panel and sub panel breakers barely get warm. At 80a my voltage is around 228v
I have reset the MCU (replaced last year) multiple times, along the cycling the breaker and using the reset on the HPWC.
I am trying to figure out if it’s the HPWC gen 2 (less than 1yr old), the onboard car chargers, the charge port itself, or a glitch in the MCU 1 software
This forum has been extremely informative in the past. I tried searching for the issue and haven’t had any luck.
Any insight is very appreciated!!
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