Losing water in pool and spa.

[davepadd]

I am hoping this group can help. For the past week overnight I have had an inch lost in both my main pool and my spa from my usual top levels. The water was not lost but instead filled up the basin with the overflow. Now we wake up this morning and the pool level is about 14” down to the inlet level(as pictured), and the spa is down an inch.
I have recently replaced both flappers and reinstalled correctly. I have also replaced both actuator valves. I am at a loss, along with the 12” of pool water that has now left my basin. Pics of my pool equipment is attached.
Thanks in advance. Dave

 

[ajw22]

Show us full pictures, including the basin that collected the overflow. We need to understand how water flows in your pool/spa/basin area.

 

[Jimrahbe]

Dave,

I 'assume' there is a pump that moves the water from the basin, back to the pool, along with a check valve of some type..

That would be my first guess... Got any pics of that??

Thanks,

Jim R.

 

[davepadd]

Dave,

I 'assume' there is a pump that moves the water from the basin, back to the pool, along with a check valve of some type..

That would be my first guess... Got any pics of that??

Thanks,

Jim R.

Jim, there are four drains in the basin as pictured. Not sure which drains return to the main pump (middle in pic) or the waterfall pump(right most in pic). The pump on the left is for the cleaner.
Last two pics are what I was calling the “flappers”. I believe those are what you’re calling the check valves. There is one on the supply side and one on the return side as noted in separate pics 3 and 4.
I just removed the flappers again and did find debris in the return side one. I also inspected the skimmer and main drain Jandy valves in pic #4. One was slightly worn so I replaced it.
I was losing quite a bit of water flowing to the basin from the pool so I was pumping it out of the basin with a submergable pump.
I appreciate your help. Dave