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pmlevine
Massachusetts
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With both lp tanks full, and performing bubble leak tests on the outside hose connections and regulator (none detected), I have an issue with our Atwood lp stove in our TT. I replaced the lp tank regulator but this did not resolve our issue: The burner flame starts fine right away, ignites high, I can regulate the flame down to a good blue cooking flame, but after about 5 minutes the flame diminishes and turns yellow. Happens on all the burners. Any ideas?
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jkwilson
Indiana
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There is a regulator in the stove as well.
John & Kathy
2014 Grand Design Reflection 303RLS
2014 F250 SBCC 6.2L 3.73
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StirCrazy
Kamloops, BC, Canada
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pmlevine wrote:With both lp tanks full, and performing bubble leak tests on the outside hose connections and regulator (none detected), I have an issue with our Atwood lp stove in our TT. I replaced the lp tank regulator but this did not resolve our issue: The burner flame starts fine right away, ignites high, I can regulate the flame down to a good blue cooking flame, but after about 5 minutes the flame diminishes and turns yellow. Happens on all the burners. Any ideas?
how old is the camper/trailer/5th wheel
could be lots of things and some of them age/brand plays into.
2014 F350 6.7 Platinum
2016 Cougar 330RBK
1991 Slumberqueen WS100
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JBarca
Radnor, Ohio, USA
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Hi,
Snip...
pmlevine wrote:With both lp tanks full, and performing bubble leak tests on the outside hose connections and regulator (none detected), Happens on all the burners. Any ideas?
We really need more info, year, model of the camper, and model of the stove helps too, but here are some big picture things.
You said, a bubble leak on the outside hose connections; some of the newer campers are using rubber hoses as the main gas lines under the camper. Meaning many and lots of hoses, not just a single hose from the outlet of the regulator to the main 1/2" sch 40 hard pipe gas line with flexible copper tubing runs to the appliances or years ago. Does your camper have long runs the length of the camper with a rubber hose?
Over time, LP gas brings oil out of the rubber hose, and that oil can start clogging things up. I have this exact issue on a 6 ft long rubber hose from a portable 5 lb tank to my BBQ grill and outside stove. BUT, it does take years to create that much oil.
As was stated by the other poster, there is a 11" WC step-down to 10" WC stove regulator in the stove itself to help create even burner gas flow when other appliances start and stop. Not knowing how old your camper is, Atwood had different brands of stove regulators over the years. And for the newer ones, since Dometic took over, I have little faith they will regulate at all. You really need a LP gas gauge or manometer to test the one you have rather than just changing it. The old one may be working and the problem is elsewhere.
What elevation above sea level is the camper at when this problem acts up? There have been several issues reported on the Dometic/Atwood stoves that the burners will not work above 4,500 to 5,000 ft. And Dometic tells them they won't work.
Give us some more to go on to help better.
John
John & Cindy
2005 Ford F350 Super Duty, 4x4; 6.8L V10 with 4.10
CC, SB, Lariat & FX4 package
21,000 GCWR, 11,000 GVWR
Ford Tow Command
1,700# Reese HP hitch & HP Dual Cam
2 1/2" Towbeast Receiver
2004 Sunline Solaris T310SR
(I wish we were camping!)
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pmlevine
Massachusetts
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Guys, the TT in question is a 2016 Winnebago Micro Minnie. The stove is a Dometic/Atwood model RV-1735 BBP. Looks like it is a rubber hose running about 15 feet under the TT.
I can do a leak test on the stove regulator, but don’t have the gear to check regulator pressure. Looks like I can buy another regulator (#51062), and install/seal the connections.
I think the oil particulate from the lp/rubber hose sounds like this may have impacted the regulator…
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Matt_Colie
Southeast Michigan
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Pmlevine.
It is pretty clear that the fuel pressure is dropping.
You can measure the pressure. All you need is a yardstick, some clear tubing and some elastic bands. Size the tuning so it can be pushed onto one of the burner jets. Use the rubber bands to hold the tubing to the yard stick. Put water in the tubing. You have just made a Manometer. A very common engineering tool.
Now, turn the gas on. The yardstick will make figuring the difference between the levels real simple. It should be 11". (Anybody that works with this will call that 11"WC - Water Column.)
Does it start out there? Yes is good.
Does it stay at that level with a burner going? No is bad.
Now you just need to find out why it isn't staying at 11". Crud in the regulator is a common issue, but seldom with anything so new. Regulators are typically not serviceable, but the are cheap to buy and replace.
Matt
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.
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pmlevine
Massachusetts
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I will try to fabricate a tubing/water/manometer, if this indicates the stove regulator is the issue, finding available replacement stock may be an issue. Looks like the regulator (Dometic 51062) is out of stock everywhere. Used regulators on eBay don't sound like a good option.
Any suggestions on where to purchase this regulator?
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JBarca
Radnor, Ohio, USA
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I keep finding the Atwood 51062 as "no longer available" where I normally buy them from. Not sure if that means those sellers cannot obtain them or if Dometic discontinued that part number.
Suburban uses (or used to) the same Seventh Generation R-60 regulator, and RVUpgrades here in Ohio has 10 in stock. Suburban calls it out as "SUBURBAN 161140 RV RANGE STOVE REGULATOR". Check your numbers to compare the Seventh Generation numbers in that link's picture. Atwood did change brands over the years, but the part number stayed the same. I am not sure your stove has the Seventh Generation regulator.
https://www.rvupgradestore.com/Suburban-161140-Propane-Regulator-p/41-1021.htm
I bought from RVUpgrades many times before and had a positive experience. You can also try to hit on the Suburban part number for places closer to you or an RV dealer.
That is what you requested, but I will add this comment. I have little faith that those R-60 regulators will work correctly unless they solve their problems in manufacturing. I bought 6 of them in 2019 to have on hand, and none regulate; they pass the upstream pressure downstream, and Dometic would not help. See this post of mine from 2019. https://www.rv.net/forum/index.cfm/fusea........d/tid/29878042/srt/pa/pging/1/page/1.cfm
I would make your manometer and test the old one in place; the test will tell you if the problem if the regulator is not passing gas. It is a normally open regulator, and the pressure starts closing it. You hook up on the orifice of the burner near the control knob. Take the burner tube off. If you have electric ignition on the burners, pull the fuse on that circuit, so the igniter does not fire during your test.
Your location states Massachusetts, well below the 4,500 to 5,000 ft elevation issues unless you are out west now trying to fix this.
I hope this helps, and let us know how you make out.
John
PS. If you have a friend or a local gas appliance repair place, they will have all the test equipment you need.
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John Burke
North Dakota
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Try your furnace. That way you can get a better idea if it is the stove or a supply issue, propane bottles or regulators
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pmlevine
Massachusetts
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To continue this thread regarding the diminishing flame on a lp stove Dometic/Atwood model RV-1735 BBP (flame starts high and blue, diminishes to a yellow flame after 5 minutes)...
The refrigerator and furnace work fine, I believe the stove issue is part 51062, the stove regulator ($50 item). Part replacement seems problematic: out of stock or has quality control issues.
I brought my RV in for service today, providing the above info.
If a $50 replacement part is not an option, what options might I have? Replace the top assembly of the stove for $$$ ?
I will report back on this thread after hearing from the RV service center, hoping a part replacement resolves the issue.
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