I recently set up my Model 9320 on a 7 individual day schedule rather than weekdays + weekend. When the program switches over at midnight Sunday to the next week's settings it goes nuts and sets the heat for a temperature 8 degrees hotter (74 degrees) than the program calls for (66 degrees). If I turn the heat off and then back on it still wants to reach 74 degrees. Only, the next morning, when the next heat cycle comes up does it go back to working properly, until the next Sunday at midnight. I did not have this trouble when I was using the weekday + weekend settings.
The Honeywell help people were very nice, but had never heard of this problem. I am going to try to reset the factory defaults and then re-program the thermostat. Could this be a firmware issue?