I am fairly new to pools as I have only been maintaining one for about 7 months.
I have a solar system that does a great job heating up the pool. I've had to 'bypass' the solar system b/c the pool was getting too hot. I also bypass it when I run my polaris vacuum as I get air in the lines when I use the pump with the solar system in switched on. (different problem)
I have a single manual valve that switches between "Solar" and "Bypass". When the solar is bypassed I seem to get a lot of water creeping up the return pipe of the solar system to the roof.
When I took over the pool from the pool guys I was told by them to leave the drain spigot, on the solar return pipe from the roof, open. This results in a steady drip of about 8-10 gallons of pool water for an 8 hour pump cycle. This does not make sense to me. I closed the spigot and now when the pump shuts off there is a shuttering of the pipes as that water comes back down the pipe and I assume forces it's way through(?) the bypass valve and back into the pool.
Does this make sense and is it normal or do I have a partial leak in the solar/Bypass valve?
Any thoughts and comments would be appreciated.