Bear1butt

Im sure uve had this asked b4 and im a newbe to site. I have a morgan tub with a spabuilder system. I got it used and when hooked up top side panel was wacko. Finnaly got all buttoms to work except temp up so put in a new geiko 4 button but same issue. Heats to 96 cools to 94 then heat kicks on but no more. Can u help?? Many thanks.