I just bought a new house and have no idea how to operate the in ground spa and pool. I have attached pics of the plumbing and was wondering if someone could explain the valves to me. The former owner said put the two valves closest to me if I were standing in front (the top and bottom one) to the left - but when I do that the spa drains. If i just put the top one to the right and the bottom one to the left, the spa overflows into the pool. I don't touch the far one closest to the house as that is the pool cleaner. The one to the far right, I have no idea what that does.
The spa does not get hot, I turn the heater to spa or to pool mode, the heater is hot, the water doesn't get hot. Don't quite know what to do. Here the pics https://www.dropbox.com/sh/dkjw5jcdezks8jm/AAAmSsuM6niP4-ezmolcDj6ma?dl=0