: I live in Charleston, SC and we had to evacuate because of hurricane Floyd. : The power company shut the electric for about 24 hours. After it was turned back on the hot water heater seemed to be producing hot water. Well, a day after we got back, were not getting any hot water. : The electric hot water heater is hooked up to a Paragon electric load controller. I shut the circuit breaker opened up the load controller and saw it has a 9v lithium battery. Weve been in this house for 5 years and never changed that battery. What purpose does that battery serve. Is it possible its failure could somehow result in no hot water? : Thanks a lot for your help! : Jim Thanks for your reply.It is a timer that allows water to be heated during off peak hours, and must be reset electronically by the power company
