I am confused on the switch light that comes on when trying to use propane. When using propane, the DSl light should come on and go out after a few seconds and stay off until the switch is turned off. I had a bad control board and the DSL light never went out when the propane switch was turned on. The other light is for the electric only. If you are not getting warm water after 20 minutes or so there is an electric issue. Also not mentioned here, check the outside electrical switch on the the tank, it must be on as well. Look at it close, it is backwards IMHO in that it should be off when it is on.
Marriot2 on Wheels 2017 Flagstaff Classic 832 OKBS
2013 GMC Denali 6.6L 2500 HD DMAX w\Alison Trans
Pepper Pomeranian rescue 101 days as camping buddy
Days camped in FR, 2011 = 20, 2012 = 57, 2013 = 59
... 2014 = 39, 2015 = 52, 2016 = 68, 3 more planned