I have my ATO set up to my DA controller with a DA float switch. Everything is hooked up properly but for some reason once the float switch drops the pump turns on but not shut off. Can a siphon make the pump continue running? I know its running because I put my ear to it and can hear the difference of when its off to on. All other equipment ive tried on the float switch goes off and on perfectly just not the aqualifter. Can anyone give me an answer to my problem im stumped.