Help please ! Having problems with my spa/pool

[UnrateD]

Hi guys , I have the same problem everyday. At 8:20 in the morning, the water level of my spa lower and the water level of my pool rise.(picture 1) (picture2)

Its seem that it automatically switch to spa before the water lower. To fix the problem I have to set Pool on the controler than wait 35sec and press Filter until the next moring..!

Can you help me please?

A picture of my setup (picture 3) (picture4) (picture 5)

(picture 1)

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(picture 2)

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(picture 3)

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(picture 4)

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(picture 5)

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[JasonLion]

That is usually caused by a bad check valve on the line from the pump to the spa jets. However, there are a couple of other possible causes, valves that don't completely close, or leaks in the spa.

 

[UnrateD]

That is usually caused by a bad check valve on the line from the pump to the spa jets. However, there are a couple of other possible causes, valves that don't completely close, or leaks in the spa.

Thanks for your answer Jason, I'll look for the check valve but what is weird is that I have no leaks, the water just go from the spa to the pool but its only when the spa setting is on. When is set to pool everything is ok