We shall install customer supplied, warranty, water heater. We shall dispose of existing unit. Installed new warrantied unit and restored water, ran without aerator to clear any debris within the newly installed heater Reinstalled aerator to the faucet and ran water on the hot side for appx 5-6 minutes to bleed out any remaining air pressure within the system After system was running smoothly with no signs of air or bubbles, flipped breaker on and allowed system to complete reconfig of the unit while the unit has water flowing through it the count down timer starts from 60 and counts down to 0 At 45 seconds the unit fires on and is supposed to begin heating the water to the desired set point, after allowing the timer to reach zero the unit was not producing hot water Conducted a number of tests, revolving water flow on the hot and cold sides as well as removing flow from the cold side and only allowing the eemax to flow With no luck producing any hot water the technician called E