First post to this forum - I have an inground pool with sand filter system & salt generator.
My problem is that I tried to vacuum to waste yesterday & found that there was no suction coming from my deep end skimmer (had main drain & shallow end skimmer shut) or vacuum hose. It worked fine with the dial set to filter & I have no problem backwashing so I know my waste piping is working right. Any ideas? Thanks in advance for the help.