Try it on propane, and see if the water gets warm. Better yet, open the outside door, and raise the lever ion the pop-off valve and make you have water in the tank. Just because the faucets run, doesn't mean the tank is full. Next, try it on propane, and see if it works, If not, bypass valves wrong. Did you turn on the electrical switch outside on the unit? (bottom left corner). Do a search on here for water heater, lot of info, one of the most asked questions. Info has been repeated many times, but I gave you a start.
And 30 minutes on electric may not be long enough for hot water, but should notice temp difference between hot and cold.
2012 Ford F250 ext. Cab 4x4
2002 Jeep Wrangler Sahara
2008 Yamaha V-Star 650 Classic
2008 Work and Play 18LT