This got weirder. I left my unit unplugged for two days and gave it a try again and it works, sort of -- the low water alarm no longer goes off, but now the temp displayed constantly varies -- I had it set to 142 and it was varying between 139 and 155, displayed. Every so often it would give the "at temp" double beep, but the displayed temp when it did so could be 151 or 140. Even weirder, it would sometimes display IMPOSSIBLE temperatures, shooting up well past 200 to 300, 400 degrees, at which point it would stop heating/pumping and not work until it was unplugged and plugged back in.
I definitely need a replacement unit, but firstname.lastname@example.org hasn't responded. @anova @"Stephen Svajian" any hope for me?