On Dec 1, 10:40*pm, RBM wrote:

... The problem is either a bad float, or a bad cord,
where the wires have shorted together internally, causing the alarm to
stay on.


I had another hunch last night.

I said to myself, maybe there is a problem at the alarm box inside the
house?
After messing around with it for a few minutes, it would turn off, but
there was a hum/vibration coming from it, so I knew it wasn't stable.

So I decided to unplug the unit completely and go to sleep.

Today when I just plugged it in, BINGO!
It was reset, no hum/vibration.

If only I had done this test before the septic guy came over.