I'm not getting any power to my upper thermostat, but checked the breaker and have 120 and each pole there. I checked the top of the heater, where the wires come out of the wall and attach to the wires going into the heater, and I get 2.5 volts coming out of the wall. Any thoughts on where/what happened?! Do I have to dig through my walls?! FWIW, I'm in Tampa, FL area, home of massive lightning, which we had yesterday, but only noticed no hot water today, after two people showered okay. Possibly they had enough hot water even if it went out yesterday? But still, I have power out of the breaker...? Thanks.