Starting with the basics, is it full of water? On the outside, pull open the pop-off valve, and water should rush out. The thermal safeties won't allow it to run for long, without water in it. Are you hooked up to city water, or running from the pump? Are all the water heater bypass valves in the correct position? You should see three valves on the back side of it. (our 19RD has the top valve partially hidden by the box). The electric side will work completely separate from the propane side. Let us know what you find out.
2012 Jay Flight 19RD
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1 Spoiled Dog