My sister just bought a new house and I volunteered to maintain her pool since I now know how to do it with a minimum of effort thanks to this forum. The pool guy didn't do much except dump chlorine into the pool weekly for $90/month. The skimmer basket was full and the floor was filthy (not a covered pool). The water was in decent shape, so that saved me time. I replaced the filter cartridge for a clean start and added borates. The pool looks great.
Her equipment is almost exactly like mine, so that makes things very easy for me. I upgraded her to an iAquaLink so I can monitor things remotely. There are a few differences, however, which is what I need help with. One is an autofill, which is this thread, and the other is on the cleaner, which I will post separately in the other section.
TLDR - I have a question on autofill.
In the ground, there is what appears to be a standard Fluidmaster toilet tank valve. I tried pressing it down, but don't hear any water flowing. Across the pool is a 1 inch PVC pipe sticking out of the wall about 6 inches, which looks like it should fill the pool. Any ideas where I should start troubleshooting this?