Originally Posted by Juju
I just dewinterized our Georgetown, filled the fresh water tank, fired up the water heater and OPPS forgot to fill the hot water tank. Now it will only heat with ele. What did I ruin?
You usually only ruin the electric heating element when using it without water in the tank. Are you sure you haven't crossed what is and what is not working? Is the electric working and the propane not, or is it actually the propane that is working and not the electric? I am assuming you have the Suburban brand water heater. If so, then the following applies:
If as you stated it is working off the electric heating element (which it sounds like you didn't ruin), but is not working off of propane, then a few things could have happened.
The first thing to check is of hi-limit temperature ECO switch, which may have either tripped (it is resettable) or burned out possibly.
There are two ECO switches. one for the propane/DC side and one for the electric heating element side. They are underneath a rubber cover on the face of the water heater. Go outside and just press these, to see if the propane ECO one tripped.
Hold on and I will edit this post with pics.
If you access the water heater from the access panel on outside of the RV, you will see a rubber cover like in the pic below. You can just press the round part to reset the high temperature ECO switches to see if they have tripped due to a high temperature in the water heater. If I recall correctly the left one is for the electric heating element and the right one if for the propane/dsi side.