I just realized today that the pool pump (that came with my new house) is a two speed (just turn the switch the other way). However, when I turned the switch to the low speed I get 0 psi on the filter (normally 14 psi on high speed). This is a 75 sqft cartridge system, some 14 year old Jacuzzi pump/filter combo system. The pool is an above ground ~14,000 gal. I mean, on low it feels like it is still working though, just reading no pressure.
What does this mean? Or is this normal?
Thanks for the help