Propane Hot water heater and furnace not working

[MikeF]

2016 Dutchman Denali. Earlier this year I pulled out my Hot Water heater to get to some other repairs that needed to do. Electric hot water was working fine (wish it was hotter.) didn’t test propane my tanks were empty.

Now have 2 full propane tanks, fridge and stove work fine, burned all 3 burners a while. Opened tanks nice and slow, tried other tanks. Both water heater and furnace will come on and sound like they want too light, but they don’t.

To me it seems like a gas flow problem, is there a branch where hoses split off to those 2?

Thanks in advance.

[franktafl]

sounds like you got critters up in the exhaust or the intake tubes. Need to go WAY in there to find them.

[persistent]

There are multiple possibilities.

Two similar appliances don't work. Two other kinds do work. Look for common cause.

A blocked supply line is certainly one possibility. Did your system spend any time with the tank connection hoses disconnected? If so, you could be correct. Deteriorating rubber hoses could also release debris into the lines.

Low pressure is another. Stove and refrig burners would be more tolerant of low pressure.

12 volts to two appliances partially missing could be cause. Lose ground or neutral wire somewhere. This is not likely since the two appliances probably have separate 12 volt circuits.

Two valves or valve controllers failed coincidentally at the same time. (grasping at straws here)

Other?