I have an in-ground pool and spa. I was trying to drain the spa water to the pool by setting the suction valve to spa and the return valve to pool. The spa drained and the pool level rises. However, there's still some water still coming back to the spa. Can the diverter valve completely shut off the spa return?
Later after I drained 1/3 of the spa, I set the suction valve back to pool and left the return valve at pool. Next morning, when the filter turned on based on a timer, I noticed the spa is full again.
Any help. thanks.