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It has 2 ports. The only problem with using just the skimmer is that it will render the infloor cleaning system useless :(

At this point everything had been checked. I think you are exactly right. The drain in the pool is as big as the drain in the water feature and no other in the pool itself. The only way it won’t drain is by closing the main drain valve which isolates it from the pool and skimmer suction. Is...

Closed wf drain, wf went down. Closed Main drain, wf went down. Closed both wf drain and main drain, feature water stays put :(.

Right, but why does it fixes the issue when closed at 3 o clock? What could be causing suction from waterfall drain into main drain when pool pump suction path is opened? Seems that closing all suction towards the pool pump fixes it.

You might be right. I am going to check on these. At least is somewhat isolated now but I am still baffled that pointing the valve closed at 3 o clock, which closes any water flow altogether to or from the “shared” pipe where the main drain and waterfall drain are (and flow towards the pool pump...

So you are saying to close the main drain and use it only when cleaning at night? This could work but what a pain to do that everyday. I also noticed that air relief valve is having issues closing. Had to force it closed as it leaked. Going to change this next. I read on another thread that...

Another thing I question is why do I have 3 water feature returns on the water feature pump and only one check valve. Wouldn’t the other two returns with no check valves allow water to go back up the returns, through pump and down the drain? All these three say water feature returns.

Actually, i just got the correct part number and Hayward brand. Psxvde. Check valves are just generic ones.

Yes both check valves return water to the feature

The return valves return to the water feature. Today I shut down the water feature pump and right after I heard a rush of water running down the main drain. This is how the valves were when this happened. The water feature pipe on the pool suction side was closed. The skimmer was partially...

Going back to the check valves, I wonder if the check valves are the problem. Even though they look the same they might not be compatible with Hayward systems? I bought some these. is there a chance the check valves are not fully compatible. These are the only parts that were changed and were...

It will be this one. Currently fully open towards cleaning and close towards returns. Still at the time of test, all valves opposite of it, including the water feature return which is used to circulate water when the pool pump Is on, were also individually closed just in case.

Every valve on the pool pump return side.

Every valve was shut on the return side. Water still went down.

Both check valves were replaced and there was no debris in the pipes :(. The only pipe that wasn’t shut down was the one with no label next to the pipe that says water return with the check valve on the pool return side. I will turn all off like suggested and test again.

Yes, same level as the pool. The valves door closes the ports it needs to close and rotate in the same direction as before. I tested rotation and “door” positions. and also verified the door was closing the correct ports, it won’t rotate correctly if installed wrong, correct? It rotates as before.

I will play with these and report back

The jandy valve door and o-rings that controls the main drain suction and water feature suction etc were replaced.

both of the check valves were replaced. After the water feature pump fills the bowl and spills over, I turn off the water feature pump and within an hour or so it drops

The little pipe that shows closed between those 4 pipes is just an aerator.