Had and issue over weekend where pedal on toilet got stuck in down position, guest did not notice when they were done and left it down, after using all the fresh water
in the tank the vacuum pump kept on pumping. Not sure how long this went on for, figuring maybe a half hour before I noticed. Now the pump just keeps pumping when pedal is depressed but will not clear out bowl. It's a J series vacuum tank. Holding tank
has been emptied. Any thoughts or ideas as to where to go from here would be greatly appreciated.