Propane Issue?

D.E.Bishop wrote:

Old-Biscuit wrote:
"I had my 2014 Fleetwood Storm Class A RV out this past weekend ...."


Water heater did exactly what it was designed to do.....relight on flame failure.
It will do this 3 times and then 'fault' (no more attempts and light will come on at ON/OFF panel).

Oven pilot flame......

Both have same issue.
Lack of propane flow due to lack of use.

Propane system needed flow established and a demand placed on regulator (folks say that need to purge line of air...no air in system just no flow)

After a period of non-use fire off the stove top burners on high. This will 'purge' the lines (establish flow and place demand on regulator)
Remember propane system is less than .5 psi.

Okay Old-Biscuit, if there isn't any air in the line, what is it that is blowing against the flame from the little propane fire lighter I use? The flow of something out of the burners does move the lighter flame and will blow out a match but it doesn't burn. It must be some type of gas, there's no liquid coming out.

Just what is FLOWING out of the burners?

Very low flowing propane until demand is placed on regulator.....regulator opens, fills line that now has been depleted and catches up with flow demand.

Just think about it....how would air get in a pressurized system ?
If there were leaks propane would flow out not air in cause regulator would continue to supply propane.

Turning on stove top burners (or letting water heater, or fridge or furnace make several attempts) places a flow demand on regulator which is closed due to lack of any demand. Then due to demand.reg opens up and more propane flows.

LP regulator does 2 things......controls/maintains line pressure AND provides adequate flow based on demand by appliance(s).

Until adequate flow is established the amount of propane flowing out initially after period of non-use is minimal and not fuel rich enough to light/maintain flame----fuel/air ratio (too air rich at first due to surrounding air....not air thru propane line)