I can verify that my Auber PID works with my new ZX. Here are photos:
I'm not sure why the first photo isn't displaying all the digits. in real life it was a normal heatup cycle. Then for giggles i unplugged the zx and turned the auber pid on again. I got the H as shown in the second photo.
I am no pid expert, but this suggests to me that the H is an XLR connection error. Maybe the XLR jack on the ZX is a little out of spec? I suppose the pid jack could be out of spec too. Are all the pins on the ZX XLR jack the same length and width? do you have any other pids or ball vapes you can use to try to see if the error happens more on the zx side or the auber side? finding a second pid that fails with the zx or a second ball vape that fails with the auber could narrow it down?