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BruceMc's avatar
BruceMc
Explorer III
Oct 07, 2018

Odd propane behavior - starts out ok, then gets weak...

My son purchased a new No Boundaries 16.5 trailer a couple of weeks ago. He's been puttering on it, including spending a few nights to get familiar with it.

A couple of days ago, he noted the space heater was making odd noises., like it was sputtering.

In testing today (where the outside temperatures are around 60) we can look through the vents at a peep hole to watch the flame. Initially, the flame is bright blue and runs 5 minutes or so, but then starts turning yellow/orange, which coincides with the odd sound.
We found not only the heater would do this, but the cooktop and water heater. In fact, it takes only 5-10 seconds for the water heater to sputter out & go into fault for lack of propane.

His unit has a 20lb propane bottle, which has a bit less than a 1/4 remaining. We swapped tanks for a 30lb of mine which is 1/3 full.
Same behavior.

Suspecting the regulator, I pulled mine out of my motorhome, and swapped it out.
Same behavior.

The lines are fairly large so there's lots of capacity. All tees are visible, where the lead in connects to an aluminum pass-thorugh tee with two taps, then carries on to the next pass-through tee with two taps.

The next test will be to fill the bottle to ensure it's not a case of a low bottle. (I have two more for the grill which need filling, so it's a good time to go get gas...)

In my experience, I've never had issues like this with a low bottle - when there's liquid gas, there's sufficient vapor. When the liquid is gone, there's no more gas.

He'll call & make an appointment for service, but in the mean time, I'm turning to the RV community to ask if anyone else has experienced such an issue.

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