Is it a voilamart kit? My 1500w voilamart kit has a PAS setting that only goes to 1 not zero....as long as you're not using the PAS then leave it at 1.
Have you searched around on Google to see if some one has a video on how to access setup screens on your display. Most have a series of button pushes that take you to hidden setup screens that may allow you to select a PAS range such as 0-5. My Himiway allows me to set 0-5 and four other ranges.