P2 Limit 0.0 P3 Limit -6.0 How to set temperature for model X-300. First step: Hold on the "set" and "adjust" buttons at the same time for about 4 seconds until P1 appears. Next Step: click on the middle button that displays "lighting" until you reach P2 or P3. Keep in mind that if you want to drop to colder temperatures then you need to set P3. If you want to raise the temperature on your slush machine, then you need to set P2.