I am trying to troubleshoot my infloor cleaning system. I get a few nozzles that pop up sporadically but others that do not come up at all. I have a Paramount 6 port module I have taken it out, cleaned it, the impeller/gears turn and all the valves are closed and remain closed as I turn the impeller [seems to me that the valves should open sequentially as I operate the module manually but i dont know?]. I know there is water coming into the module housing through the center pipe to the impeller but the pressure gauge doesn't work. So Im trying to determine if I need a new module? new nozzles? Have my valves in the wrong position for water flow which may be affecting the pressure in the system? Or last but not least there is some other problem I am ignorant of??