Inexplicably, the purifier has power and is functioning today. The reading is 16 volts, 5.0 amps. All I did recently was add 1.5 gallons of chlorine a couple days ago.

The salt reading is now 6600 ppm. The tri-sensor must be out of whack since it was giving a salt reading of 800 ppm the other day, the pool store testing showed it to be actually 3300 ppm