Checked out unit and found that unit has power and reading heating on display but never comes out of heating. customer believes that unit isn't getting water. checked incoming water and have water to unit. checked tank and tank is full. poured hot water and unit refilled when called. checked all valves and have proper voltage and no clogs. unit has 214 volts supplied.checked on/off switch and it''s working properly. fuse is good. reset button works properly.hoses are good and have no clogs.found that 214 is coming from terminal block to relay. but have nothing out on left side relay. will order relay and return.called s&d and spoke to Karen butler she approved next day air. 3/14/18 Installed new relay. Still not heating. Have 208v in. Elements ok. Wires ok. DCV into relay is 3.1vdc. Should be at least 5 vdc as per Eric at Curtis. Eric said controller is bad. He is shipping part to shop via ground 3-5 days. 483040 return auth#. Part# is WC-37388. Spoke to Manager. They are calling S&D a