bradleydavidgood777
Posts: 115
Joined: Tue Aug 29, 2017 11:55 am
Location: Media, PA

Mitsu EVSE Ground Fault

Mon May 14, 2018 5:00 am

I have a 2017 Mitsu EVSE which is a Yazaki model 9482A128. It worked fine for about a year and now about half the time I plug it in I get a ground fault.

I've plugged it in several locations other than my house where I know there are good grounds and I get the same behavior.

I figured I'd try to open it up and check the wiring to see if it looks solid. I removed all of the screws and carefully used a screwdriver to pry it open but it is not opening easy.

Has anyone had any experience opening one of these?

Or any other advice?

Thanks
2017 I-Miev

kiev
Posts: 577
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Mitsu EVSE Ground Fault

Mon May 14, 2018 6:48 pm

Did you remove the screws located under the labels?
kiev = kenny's innovative electric vehicle

bradleydavidgood777
Posts: 115
Joined: Tue Aug 29, 2017 11:55 am
Location: Media, PA

Re: Mitsu EVSE Ground Fault

Fri May 18, 2018 11:10 am

kiev wrote:Did you remove the screws located under the labels?


I peeled the label off the bottom of the unit and there were no screws. I have the newer model.
2017 I-Miev

bradleydavidgood777
Posts: 115
Joined: Tue Aug 29, 2017 11:55 am
Location: Media, PA

Re: Mitsu EVSE Ground Fault

Sat May 19, 2018 5:21 am

2017 I-Miev

kiev
Posts: 577
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Mitsu EVSE Ground Fault

Sat May 19, 2018 5:53 am

i've never opened one of those, the Panasonic version has a potted control board and it is quite a pain to remove all the conformal coating without damage. i'm gonna guess that your board will be potted also.

The old version does 2 ground checks before allowing charging: one checks that the ground wire exists and provides a current flow path back for the Line; the other leaks a very low current thru the ground fault detection coil to prove that the GFCI circuit is functioning properly.

Image

Image
kiev = kenny's innovative electric vehicle

Return to “General / Main Owners Forum”