How do you adjust the Freeflow spa temperature?

Using the + and - icons on the control panel

The temperature can be adjusted between 80°F - 104°F / 26.5°C - 40°C. Press the Plus or Minus buttons to set your desired temperature. After five seconds, the LCD will display the current spa temperature. The “heater” indicator lights up when the heater is on. It flashes when there is a request for more heat, but the heater is not on. Once set temperature is reached the heat indicator shuts off and the low speed of the jet pump turns off after 30 seconds (if not in filter cycle).