Sounds like you have dry fired the water heater
Sounds like you also have a Suburban Water Heater (circuit board inside cabinet)
Fortunately you dry fired using propane (Started water heater (DSI). Red light came on, burner fired up)
NOW hopefully you have waited until tank has cooled down before allowing cold water into WH TANK.......(Steel tank GLASS LINED!!!!!)
Once cooled and you have changed valving from 'winterize' to 'normal' and tank has filled---------reset the High Temp T-stat
Outside compartment above gas valve 'Push to Reset' buttons
Left one is to reset the 120V AC (electric)
Right one is to reset the 12V DC (propane)