<a href=showthread.php?s=&postid=8826851#post8826851 target=_blank>Originally posted</a> by kigs
The reason I ask is because when the auto top off was working, it kept beeping periodically, and when I lifted the return hose from the water to let the air enter, the alarm stopped beeping, now leading me to believe that the water from the tank was being suctioned out to the reservoir tank.