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Author Topic: LP / Propane  (Read 267 times)

ctjahn

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LP / Propane
« on: October 16, 2017, 12:08:11 PM »
Again a 1996 American Eagle.

Now trying to get the propane to work.  Valve is on and the most basic thing should work?  I tried to light the stovetop but not smelling any gas.  Auto-ignite is flashing.   Furnace isn't working (Well the fan is).  Fridge isn't working on LP either. 

Seems like the regulator?  In the past I was able to turn the burners on to bleed the system.  I cant hear any propane flowing if I turn them on...  I double checked and the tank is on.  Only about 1/4 full though.  I didn't pull the cover off the regulator of pursue further research until I got some pointers..

Prior owner said tank was replaced but not sure if it was used after that.  So, does someone have some tips on troubleshooting and/or a reference?   

Thanks in advance!  ctjahn@courtneyjahn.com -

cj

Sun2Retire

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Re: LP / Propane
« Reply #1 on: October 16, 2017, 12:17:05 PM »
The simplest answer could be that the tank is empty and the (notoriously inaccurate) gauge is wrong
Scott
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ctjahn

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Re: LP / Propane
« Reply #2 on: October 16, 2017, 02:44:42 PM »
Good Guess, but I figured if I could open the vent and it blows, there is a bit in there?  I guess the next step is to fill it up.

Gary RV_Wizard

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Re: LP / Propane
« Reply #3 on: October 16, 2017, 03:07:13 PM »
Is there a solenoid-controlled valve in the line, activated by an older-type LP gas detector? 1996 vintage coaches were equipped with them, and perhaps it is still there. The gas/fire code no longer requires them in RVs, so replacements are hard to find and very expensive, so most owners have removed them by now. If the detector is turned off, or has signaled an alarm, or has simply failed, the gas solenoid will be closed and no LP can flow anywhere.
Gary
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Summers: Black Mountain, NC
Home: Ocala National Forest, FL

Kevin Means

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Re: LP / Propane
« Reply #4 on: October 16, 2017, 03:09:55 PM »
Modern propane tanks have a safety valve that stops the flow of propane if the tank is jarred sharply (like during an accident.) That safety valve can also close if the twist-valve is opened too quickly. If you're sure there's propane in the tank, close the valve, wait a few seconds, then slowly open it to the full-open posion. Then try lighting your appliances again.

Kev
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Towing a Jeep Rubicon Unlimited LJ or an Acura MDX
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Lakeside, California

ctjahn

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Re: LP / Propane
« Reply #5 on: October 16, 2017, 03:15:35 PM »
Thanks Gary,  There is a two wire device after what I believe is the regulator.  That could be it.
Thanks Kevin, I did try turning on and off a few times but will try slower!



Gary RV_Wizard

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Re: LP / Propane
« Reply #6 on: October 16, 2017, 03:16:01 PM »
Loosen the line after the regulator to check for flow through it.  It's only about 0.5 psi downstream from the regulator, so don't expect a loud hiss or a rush of gas. If Ok there, check again at the stove inlet.
Gary
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Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

Gary RV_Wizard

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Re: LP / Propane
« Reply #7 on: October 16, 2017, 03:18:06 PM »
Quote
There is a two wire device after what I believe is the regulator.  That could be it.

Yeap, that's it. Just remove it and connect the lines together. Then get a new LP detector for the galley area, since the original is long past its useful life and probably worthless as a gas safety alarm.

You should be able to get brass fittings that will couple the ends of the tubing once the valve is removed. A flare double male [union] fitting might be sufficient if the gas valve has flare fittings. It's been so long since I looked at one, I've forgotten how they were plumbed.

Male flare union:
https://www.grainger.com/product/46M525
« Last Edit: October 16, 2017, 03:23:10 PM by Gary RV_Wizard »
Gary
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ctjahn

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Re: LP / Propane
« Reply #8 on: October 16, 2017, 03:28:11 PM »
Thanks again!  I will see if its on or not.  (the detector).  And regardless I would like a couple new detectors for safety.  I see too many of these in savage yards burned up when looking for parts.  Not sure I can remove the part entirely without adding a splice but will take a look.  I would prefer to add two old school tanks opposed to the onboard.  Easier to deal with.

For those who haven't followed the story....This unit was either hit by lightning or multiple malfunctions, or plugged into a improperly wired outlet. (Sold as fully functional at auction)  I have made a lot of progress but still struggling with stuff.  Both TV's were shot and removed them this past weekend and ordered cheap small replacements (Flat screen) with mounts. Found a few more fuses blown and as a result fixed the outdoor speakers.  Rewired the cigarette lighter (edit) so now I can have my phone plugged in for GPS.  Rewired the HDMI and cable connections and got that working (I think).  Making progress one day at a time one project at a time but soon I may be 80% functional!  The help is greatly appreciated.

Now if I can find some Dometic RM7732 (side by side) fridge doors I would be doing well... or a complete replacement. It works but someone must have driven it with the doors open and both hinges are damaged.

Thx again
Cj
« Last Edit: October 17, 2017, 06:28:01 AM by ctjahn »

Gary RV_Wizard

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Re: LP / Propane
« Reply #9 on: October 16, 2017, 04:07:03 PM »
If the detector and the solenoid are still working, just turn the detector on and it should open the solenoid.  The solenoid uses a low voltage pulse, though, so you can't just jumper it with 12v to force it open.
Gary
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Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

ctjahn

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Re: LP / Propane
« Reply #10 on: October 16, 2017, 06:32:14 PM »

Took a look after work (Mind you I work 12-16 per day)

Redflag 1 No power to the detector..... - unscrewed the detector off the wall and it was unplugged.  Plugged it back in and green. (not sure if there is another one I am missing)

 Redflag two... pulled the thermostat off the wall and big black mark on the printed ckt board.  Prob need two thermostats... but still no gas.   Switched polarity on the solenoid (knowing they replaced the tank).  and tried turning on the valve more slowly.

Still no gas.  Next is to test the output post solenoid... out of time..

Thx!
Cj

AStravelers

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Re: LP / Propane
« Reply #11 on: October 16, 2017, 06:38:32 PM »
At the propane tank fill connection there is a small 3/8 inch diameter knob that always gets opened to let some gas to escape when the tank is filled.  Open it and see if gas comes out.  That vent is goes directly to the tank.
Al & Sharon
2006 Winnebago Sightseer 29R
2009 Chevy Colorado 4X4

http://downtheroadaroundthebend.blogspot.com/

Gary RV_Wizard

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Re: LP / Propane
« Reply #12 on: October 16, 2017, 07:11:38 PM »
Quote
Redflag two... pulled the thermostat off the wall and big black mark on the printed ckt board.  Prob need two thermostats... but still no gas.   Switched polarity on the solenoid (knowing they replaced the tank).  and tried turning on the valve more slowly.

Thermostat? What thermostat?  Not sure what a thermostat has to do with getting LP to flow to the stove...

Gary
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Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

ctjahn

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Re: LP / Propane
« Reply #13 on: October 17, 2017, 02:59:01 AM »

Hi Gary - Was testing any gas flow so I turned the heat on to see if I could get it flowing to the furnace... Stove shouldn't need anything to flow.. most simple appliance but was trying to clear the lines if there was any air in them


Hi AStravelers - if I open the vent on the onboard tank propane comes out.

THx!
Cj

Rene T

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Re: LP / Propane
« Reply #14 on: October 17, 2017, 04:22:45 AM »
Rewired the smoke detector so now I can have my phone plugged in for GPS. 

Not sure what you meant by this statement.
Rene & Lucille & co-pilot Buddy
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ctjahn

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Re: LP / Propane
« Reply #15 on: October 17, 2017, 06:26:55 AM »
HA!  Maybe I shouldn't be multi-tasking while working...

Rewired the 12 volt cigarette lighter to use GPS on my phone...  Was blowing fuses due to a wiring nightmare.  Removed all the excess junk and connections and works fine now.

AStravelers

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Re: LP / Propane
« Reply #16 on: October 17, 2017, 06:28:06 AM »
It is possible that there is a lot air in the line and it just needs to bleed.  With a rig this old and that the propane tank was replaced at some time, it would be good to do a leak test.  It wouldn't hurt to call a mobile RV repair person that has the tools to do a leak test. 
Al & Sharon
2006 Winnebago Sightseer 29R
2009 Chevy Colorado 4X4

http://downtheroadaroundthebend.blogspot.com/

 

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