The sad part is that the EC who bought them and installed them thought they were installing a quality product,but also bear the brunt of a lawsuit if disaster happens.Kind of like the Firestone/Ford tire situation awhile back.
We installed 1000`s of sd d homeline afci`s that wouldn`t trip at the breaker,many were corrected but I know that there are many that weren`t.For awhile calls would come for the afci not tripping.So a service crew was sent to replace them.That took a big bite out of the budget.Just glad warranty is just for a year.