The water tray is not removable, and the only thing I can see that's related to a float is a metal prong that extends over a(n empty) well that has two wires tabbed onto it. However, the prong doesn't move, so I can't see where the contact would be for the "bucket overflow" light to be activated. I've jiggled all the parts even remotely connected/near the water tray, and nothing is loose/moves.
Thanks, Phil. I'll try popping/reconnecting the wires on the card, see if any of those do it, and clean off the probe sensor. Will let you know how that goes. Then try the site later.
Guess what? It's working. I wiped the probe with some alcohol and let it sit. Was vacuuming and noticed the light was off, so I checked to see if it was plugged in (ha ha). Voila!
So since you confirmed that I was indeed looking at the probe/sensor, I am satisfied with your answer.
So how do I let the site know?
Thanks again for your help, Phil. My ancient Siberian Husky thanks you, as well!