Originally Posted by Dreamsongs
Alberta, my tank has a three way valve behind the hot water tank. It is accessed through a hatch inside of my camper.
In one position the valve allows water to enter the hot water tank, or in the other position by passes the hot water tank. This allows us to winterize the unit.
Last season when I winterized my unit, I placed the valve back into the position that allows water to enter the tank.
So this season when I went to de- winterize my unit, I placed the valve back into the bypass position by mistake. I then opened up all the hot water faucets in my camper and I had water however, water was not going through the hot water tank. I guess I fooled myself :-)
Before you turn the electricity on your hot water tank, open the relief valve located in the top of your access hatch outside of the camper. This will allow air to escape and make sure that you have water in the tank.
I always have lukewarm water when turning the electricity on first. I know that the heating element is at least partially operating.
I'm sure that the heating element is toast.
I do wonder why the propane does not heat the water up the way it used to.
Thanks for everybody's replies!
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Just as a note: The HW tanks are designed to have an air pocket at the top of the tank. Opening the pressure relief valve during filling will evacuate this air pocket filling it with water and decrease the operation of the tank. Generally the first sign that you have lost the air space is a leaking pressure relief valve as the tank heats.
Water expands as it heats and must have somewhere to go, thus the need for the air space. To properly fill the tank it is important to open the hot water faucet which is the farthest distance from the tank as the tank fills. When the spitting and sputtering of air and air/water mixed has stopped and you get a steady stream of water you can turn off that faucet. At this point I generally open the other faucets in the camper one at a time to bleed any air which might be trapped in the lines.
If your HW tank is empty to start it is easy to hear the water entering the tank as it fills.
One of my de-winterizing chores is to fill the HW tank, and I start by hooking up the city water before replacing the HW tanks drain plug, I like to back flush it a bit before I put the plug in to wash out any sediment that may be left from last year.