I have a spa that is connected to my pool and its is above the level of the pool. It is draining every night now. I will try to outline everything I have done / observed:
I did a remodel about 8 months ago and a Leak Detection company found some screw behind the spa light that was not installed and water was leaking into the ground from that point.
8 months of no leaking! and Thursday the spa leaks.
There is a Jandy check valve on the spa return, and a pentair check valve on the heater and another Pentair one on the pump. The Jandy one was all torn up at the flapper so I replaced all the "guts" and plastic cover with a kit.
1st night the water holds. Every night since then it leaks and the water line in my spa drops about 6 inches. I have taken apart the Jandy valve 4 times to make sure its seated correctly and that there is no debis. It seems ok.
I noticed that when I look through the clear lid of the Jandy, when I turn off the pump it loses water in the check valve cavity. The Pentair ones don't seem to loose water.
I also notice that when the pump is on, the Pentair ones swing way open. The Jandy one doesnt even seem to move. It must move because my spa fills up during the day.
If I wait about 10 minutes after my pump is off, I hear gurgling or bubbles in my system, It comes from the area around the Jandy check valve and pipes (I think). I have tightened down the Jandy lid to makes sure it is sealed.
Before I changed the Jandy check valve guts, it seemed like water trickled through the cavity. The Pentair ones would fill full of water and the Jandy one always seemed half full. I turned all my jets on and ramped my pump up at full speed to try and clear any debris that might be in the pipes. Now the Jandy Valve is full like the Pentair ones when the pump is on (but water leve in the valve drops when off as discussed earlier).
Again the spa was holding water for about 8 months just fine, and for the first night after I replaced the Jandy "guts"
Thanks in advance for any advice or next steps to trouble shoot. I am so frustrated. I am attaching pictures as well. The Pentair check valves are black, the Jandy one is painted beige. Its on the far left. Their is an acuator you cant really see toward the left, That one is suction, the one in the middle closest to the ground is the pool cleaner, the one above it is the return (spa/pool) and the one on the far right is the fountain that spills into the pool