Cyclops1055

I'm taking a chance that someone might have a solution to my issue, I have a Canadian Spa Company Swift Current V2 hot tub, my issue is when pressing the heat and jets buttons together for 2-3 seconds it does not bring up the maximum temperature selection screen. It was working at one point, I recently changed the heat pump because the impeller was giving me issues, the person I purchased the hot from had an extra pump. Any ideas how I can get the maximum temperature to come up?