Following up from my other thread on autofill, I also have an issue with the vacuum line port. When the filter pump is running, there is no suction at all at the vacuum line port. I can easily open the door covering the port and when dangling a leaf in front of it, nothing happens. My pool has a valve which adjusts the skimmer/vacuum suction balance and I assume this pool does as well, but is it possible that it could be 100% to the skimmer? Wouldn't that be too much?
As a side note, the pool has a second pump which looks like it only runs the waterfall feature as that has no effect on anything else, but I thought I'd mention it.
Also, the vacuum line port is directly in line with the Fluidmaster autofill valve in the ground. Is it possible that the port is something other than a vacuum line port? How would I troubleshoot this?