After only one camping trip with the TT, I have yet to use any hot water for showers, etc. Last night (camper is in my driveway), I thought I would give the hot water heater a try. I flipped the propane switch and it fired right up. I put about 7 gallons of water in my water tank to recycle through the heater and waited about 10 minutes. I could hear the flame blowing, but when I turned on the hot water, it wasn't even warm. How long does it normally take the propane to heat the water? By the way, the water heater also has an electrical option, but apparently, it doesn't work. I have left the switch on for hours at a time and no hot water. Any suggestions on how to fix this? Thanks!