I am a first time pool owner. All of the components and terms are new to me. I am trying to learn as much as I can, but in the mean time, I'd like to properly heat the spa so I can relax! I have a Jandy RS4 panel in my house that controls everything (their manual is not too helpful for dummies like me). My spa is raised above the pool and has a waterfall.
How I heat the spa: I hit the lower span button, set temp, and hit enter. This seems to work. Also, on the top line of buttons, I hit "Spa" which I believe runs the Spa pump.
What happens when I do this: the water heats up to the desired temp, but the water level in the spa drops. There are no leaks. My pool guy (who I do not want to annoy too much) said that it could be because of the flap in the check valve getting stuck.
I appreciate any input. I just want to heat the spa for now and stop the water from draining out.