Originally Posted by WDK
I have found that if the electric is on and the water reaches temperature, the propane side will not turn on....the burner will not light though I have not checked to see if the reverse is true.
Yes it is true, If it's the same temp and shut off it will not come on with the electric. they both have the same temp disk or limit if you want to call it that. Even through one disk is for propane side and one is for the electrical side. That is why you can use them both for a faster recovery. Once it hits the temp no matter what degree you have in 120 or 130 they both will shut down. And then come back on to reach temp again.