HOT TUB
You can always turn the hot tub on/off by simply going to the grey “timer” box (below the white/blue temperature box) and pressing the on/off button, which is the middle button in the top row.
The video below “Hot Tub & Cold Plunge Operation” will show you how to setup the timer so that the hot tub is hot when you typically prefer to use it. IMPORTANT NOTE: the hot tub typically heats at only 4 degrees (F) per hour. So it takes a while to get to 104 which is why you want to set the correct timer mode.