GFCI will not trip with tester but trips with test button, which should I go by?
That is why the only recognized method of testing (by the Manufacturer) is the test button on the GFCI itself.
Robert and Jeff gave you good advice.
P.S. Nice to see you back on our forum, Robert…enjoy!
A GFCI that trios with the test button is good, but not tripping with the tester indicates that it is not grounded. It should be visibly marked “no equipment ground.”.Stickers usually come with the GFCI. Just note the no equipment ground in your report and move on.