Thanks, but we checked and it is closed.
On a North Trail, the water heater bypass is probably 3 separate valves: on on the cold water line going into the bottom of the water heater, a second on the hot water line coming out of the water heater, and a third that crosses over between those 2 lines. When de-winterizing, the hot and cold lines get opened and the crossover gets closed.
Also check the outside shower and make sure the faucets are turned off. If on, even if the sprayhead is closed, the hot and cold water will mix, giving you tepid water inside.
On the outside of the water heater, under the cover, there's a temperature/pressure relief valve. If you carefully open that valve by lifting the lever (good idea to use a tool in case the water is really hot), hot water should come out (if you're hooked up to a water faucet).
If you get cold water coming out the relief valve, the heating element is not ON or not working. Try running it on propane/12V. If that works, and you have a Suburban Water Heater, our
Water Heater Troubleshooting Guide will help you diagnose the problem.