Hello Rich,
Thank you for the review and the feedback. If you view pages 14-15 of the Use & Care Manual, they will explain the minimum and maximum temperatures, the set points as indicated by the display, and how to change between. If you still need assistance, please call Technical Support at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST and one of our experienced analysts will be happy to assist you. Thank you.
Isaiah