Split from this topic for better response. Please start your own threads. Bama
I am having a similar issue with my spa, plus some. I am losing water when the pump isn't running. I believe a spa return check valve is what everyone is prescribing too, so I will add one and see what happens.
Here are my other issues. (1) I lose water to my pool during spa mode. I originally thought that my jandy neverlube valve prior to my suction skimmer/spa pump was leaking. I changed the guts in it with no luck. I then discovered that one of the side "jets" in my spa is suctioning water during spa mode. I'll call it a jet because it looks like my other spa jets, but it doesn't shoot any water or air during spa time. When I switch the valves to pool mode (just switching the return valve to the pool return) that same jet pumps water into my spa. After countless hours contemplating this and reading these posts, the only thing I can figure is that "jet" is for the spa recirc and spillover to the pool. But why the auctioning while in spa mode? I have no above ground control of this "jet.". Is it possible that there is a check valve somewhere underground that's failing? I forgot to mention that I have a raised spa with a spillover into the pool. I have a dedicated 2hp whisper flo pump for my 5 spa jets (well, 4, plus my one special "jet"). My main suction pump is a 3/4 hp whisper flo. I have a check valve between my pump and my filter. My pool is about 16,000 gal and it's pretty old. Not sure of exactly how old.
(2). One of my jets is not pushing any water through it. It does get air from my blower, but all that just bubbles to the surface. There must be a block in that jet plumbing. How do I get to it? I only have an 11/2 PVC pipe into my spa to work through. I have a 1 hp blower motor also attached to it.
I hope someone has some answers for me cuz I am extremely frustrated. This pool is making me OCD. I can't think of anything else. Help!!!