Atwood Water Heater Wont Shut Off

OB I do appreciate your help. I didn't know theres a separate set of stats for the electric side. It is a2002 HR, and I do have access to the backside, it looks like there is an access panel on the back. I switched on the propane side and the ignitor sparked and there was voltage present at the tstat then. I will follow up on it tomw.

Happened onto this site this morning, maybe useful to you:
http://beamalarm.com/Documents/atwood_water_heater_troubleshooting.html

OK......just a few questions to clarify

Do you have only one set of t-stats?
None on backside of tank for electric element?

Atwood changed the control circuits.......went from separate set of t-stats to one set of t-stats.
Separate set of t-stats had electric on backside with element and gas in outside compartment.
Combo set of t-stats just in outside compartment.
When they changed they also changed how the electric element got 110V power.
Before the change 110V AC went directly to/thru separate t-stats to element.
After change...12V DC from switch goes to relay that controls AC to element

Normal t-stat Opens at 140*F.........Closes at 110*F
Need power to and thru t-stat for electric and/or gas to heat