This is a working model of a basic septic systems pump and alarm for a pressure drainfield, sand filter, or sand mound. Geogrpahically, these two yellow float switches are located in the tanks with the wastewater. The light signifies the pump. When I raise the lower float switch, you must imagine my hand as wastewater. This is what will trigger the pump to turn on. The light comes on. When the lower float is lowered, the light goes off.
Now if something goes wrong with the pump the water levels will reach higher than normal. When the upper yellow float is raised, it sounds the alarm. When the water level goes down, the alarm will silence itself.
Now if the alarm is randomly going off, and appearing to reset itself, is an indicator that a pump is starting to go bad or a component is starting to plug up. I have seen people think that the alarm is malfunctioning and unplug it. And later cause themselves a very expensive bill.
I hope this demonstration helps those looking at the problem. And as always, if you have any questions, please email or call me.
Thanks for reading,