Mine did. I just let them run a full day. Its the DI stage that has to have a good rinsing if I remember right. Better safe than sorry at any rate. Let it flow overnight.
And make sure your DI stage is vertical. There seem to be a lot of bad models out there that have horizontal DI...this does nothing since the crystals sink. And the water passes right over top. If they are vertical...then the water is forced through. I went from 15-20ppm to 0-3ppm just by removing my DI stage from the horizontal position on top, and stood it on its head next to the unit.