Mine's a Suburban water heater and runs on elec. or propane or both at the same time. There's a switch on my water heater in the bottom left hand corner behind the panel outside. My routine has me turning the switch on during setup once elec. is connected and I've confirmed the water heaters full by flipping the pressure relief valve. During tear down I turn the switch off.
If I dont have elec. then I turn on the propane tank and after ensuring the water heaters full I turn on the red lighted propane switch located inside the trailer. I usually turn the switch off during the night or if we're away. Again, during tear down I turn the red lighted propane switch off......Note: On mine once the tank is successfully heating on propane the light goes out. If the light stays then the tank isn't lit for some reason and will need some investigating to determine the cause. Sometimes just a retry is all that's required.
2007 Shamrock F19 hybrid - 2010 (22 nights), 2011 (24 nights), 2012 (11 nights)
2013 Surveyor Select 235RKS - 2012 (6 nights), 2013 (32 nights), 2014 (26 nights), 2015 (37 nights), 2016 (14 nights)