Believe it or not, this is a first for me. I’ve had lots of open grounds and reverse polarity outlets, but not this one, and I don’t have a good write up for it.
GFCI outlet in Kitchen, and other outlet on same circuit, read an “open neutral”.
I didn’t pull the plate, but my guess it that the GFCI was installed incorrectly, but that’s strictly a guess.
I bet it is more like the GFCI didn’t close all the way after you tested it.
They open both sides on a device type GFCI. I would trip it and reset it a few times before I gave up. It may have never been tested and had some dirt in there. Well designed contacts “wipe” and tend to be self cleaning.
Although your three-light tester will indicate reverse-polarity, that’s not the condition that actually exists.
I haven’t discovered what it really is, but when you plug anything else into the receptacle that draws current, the GFCI will trip again.
I have a letter somewhere from a Leviton rep. where we discussed this. I’ll see if I can dig it up, but in any event, these receptacles are defective and should be replaced.
Jeff that happens when the neutral contact doesn’t close and you have a load on a downstream receptacle. It reflects the hot on the <open> neutral. In a 3 light tester you could get all 3 lit.
If this is a one time occurance on a GFCI that has not been tested in years and clears up after tripping a couple times I probably would not replace it. If you are testing them regularly and it happens, toss it.
I suspect we will be seeing a lot of defective GFCIs since they are being made to hit a price point and there are plenty of counterfeits out there. The most dangerous are the ones that don’t “trip”.