Background: Winter freeze created cracked multiport valve. Had it replaced by local pool contractor. Following the winter freeze I attempted to open the pool only to find the filter top had warped and needed a complete replacement (shame on me...did not winterize!). After replacing the the previous Pentair FNS 48 Plus Fiberglass D.E. Filter with a downsized FNS 24 filter (operates basically the same only processing a slower water-flow @ GPM).
With the above in mind, I now have air bubbles at both return jets. Additionally, when I attempt to vacuum via the skimmer, as soon as I shift the J-valve to the skimmer position, I lose all pressure and the water stops flowing (as seen via the pump window). I have tried many of the test that I have been reading in other threads (i.e., check/replace the pump, replace the pump gasket, et al) and have had 3 different local pool service reps inspect my system all to no avail.
I am obviously missing something. Hopefully, you can point me in the right direction. I would appreciate any advice. Thanks...
With the above in mind, I now have air bubbles at both return jets. Additionally, when I attempt to vacuum via the skimmer, as soon as I shift the J-valve to the skimmer position, I lose all pressure and the water stops flowing (as seen via the pump window). I have tried many of the test that I have been reading in other threads (i.e., check/replace the pump, replace the pump gasket, et al) and have had 3 different local pool service reps inspect my system all to no avail.
I am obviously missing something. Hopefully, you can point me in the right direction. I would appreciate any advice. Thanks...
to help.