I have a State Select hot water heater. In the last month, it does not start heating the water when it is drained of the hot water. When I check it, the light for vacation is on and also the light of the temperature that I have set it at. Is this in vacation mode and if so, how do I turn this off?

I have a manual here for " state Eletric" not sure exactly what yours is.
http://www.hotwaterexpress.com/PDF/184671-000.pdf