Suddenly no LP gas at stove top

[Don N.]

Suddenly one day there is no gas at the stove top burners. I have gas for hot water and the refrigerator. Both LP gas tanks are full. I wanted to replace the LP gas regulator but there are absolutely no regulators locally. Everywhere I asked told me that all regulators have been recalled. Keystone informed me that there is no recall for my LP gas regulator. I welcome any suggestions where I should start looking.

[chuckster57]

Regulator recall is for a particular brand, not ALL regulators. Did you just fill your tanks? If so then you may need to bleed the air. If you turn on a burner can you hear anything like air or propane coming out.

[sourdough]

Like Chuck, you need to forget the regulator for the moment until you find out where the LP flow went. If your water heater and LP for the fridge work you need to look into the stove part first and see what's up with that. You may well need a regulator someday but first, what exactly happened or was going on when the gas "suddenly" stopped at the stove top but nowhere else?

[BookPaul74]

If the refrigerator and hot water heater is working then it’s not the regulator. The stove top burners don’t light? Have you tried the oven, if you have one. Do you use a gas match to light the burners? Hold a match or gas match and open the burner, you should see the flame flicker even if it doesn’t light. The air coming out of the line. Do you smell a gas leak?

[JRTJH]

There is a "second regulator" on the stove. It regulates gas pressure from 11" WC to 8"WC. That regulator does occasionally fail, but not very often.

If you remove the stovetop porcelain cover, you'll see the manifold along the front inside edge with all 3 burner control valves in it. Follow it to the left and it will make a turn along the side of the stovetop and end with a "small square box" (the regulator) and a brass fitting to which the copper gas line from the trailer is attached.

If you "loosen the copper gas line into the regulator, you should smell propane. If you do, and there is no gas flow at any of the burner tops, then that regulator is probably bad. Continue to rule out other "gas flow issues" in the manifold, but if there is gas into the regulator and no gas out of the regulator, chances are it's the regulator...

They are "very difficult to find" and most RV parts stores won't even try to order one for you. There are some available on EBay that are listed as "new" but in reality, are "parts from damaged stoves that were disassembled so the parts could be recycled.

MAKE SURE IT'S THE STOVE REGULATOR BEFORE TRYING TO ORDER ONE !!!!!

[Essvar]

That is really good information, thank you John. I never knew the stove had a second regulator.

[chuckster57]

I was told By Tiffen that they set the stove regulator to 5” WC, so during a PDI if I used a burner for Mano test, I had to bleed down to 4”.

[Don N.]

The burners worked fine for supper one day, and no gas the next morning for breakfast. I do not hear gas or air coming from any of the burners when turned on. I have not tried the oven pilot light..that's next. Thank you for the info on the stove regulator. How do you "bleed the air"?

[chuckster57]

Have you disconnected the gas line at the stove?

[Don N.]

I found the stove regulator and attempted to disconnect the LP line...it is secured VERY tight. I tried disconnecting but couldn't budge the fitting. I am somewhat "gun shy" on using too much force in fear of damaging the brass connection fitting. While pondering my problem I accidently discovered that if I put my refrigerator on gas mode, wait a few minutes after it is lit, I have gas to the stove top!! Are there any other "regulators" I should check?

[chuckster57]

You may have had a big air bubble. You can still take the line loose at the stove regulator. Just do what we do and use 2 wrenches. One to hold the fitting and the other to turn the flare nut.

Just for giggles, I would turn the fridge off, if you lose LP flow, post back as the line should not be regulated other than the one at the cylinders.

[sourdough]

Don I'm kinda leaning toward the air that Chuck mentioned but - it worked fine for supper one night then nothing come breakfast?? With your new finding on the fridge and stove correlation, did you make any changes to the fridge the morning you tried to cook breakfast? Change from LP to electric that night or in the AM?

The fridge shouldn't control the stove obviously and the only problem I would think it would present would be too low LP pressure if both were on....not push more fuel to the stovetop? Which goes back to air in the line?

[chuckster57]

You can measure LP pressure at the cylinder regulator, refer valve, stove burner and W/H gas valve. It requires a Manometer and I will admit in all my years, I’ve only seen low pressure once. There was one unit that the furnace wouldn’t burn right, turned out there was styrofoam in the LP line. I doubt you have that in your stove line but if you take the line loose as I described using 2 wrenches you’ll be able to eliminate any obstructions.

[BookPaul74]

Please keep trying, I’m curious what it is and might be handy to know if I ever have the problem.

[jasin1]

Wasn’t there a post recently about a flexible gas line being kinked when the slide was closed? Maybe the hose has a become permanently kinked and will not unkink when a slide is open…. Just a shot in the dark

[Don N.]

Just a quick question before I start disconnecting the LP gas line from the stove regulator, It's still "lefty loosy".."righty tighty" at the connection, right?

[chuckster57]

Originally Posted by Don N.

Just a quick question before I start disconnecting the LP gas line from the stove regulator, It's still "lefty loosy".."righty tighty" at the connection, right?

Correct, don’t over tighten it when you put it back together and since it’s a flare fitting no thread sealant.

[Don N.]

No changes were made to frig from the nightly supper to the next day breakfast. We were plugged into electric during our entire stay at the RV park.

[Don N.]

Before I attempt to strong arm loosen the LP gas line to the stove regulator, this is the situation:
1. Trailer plugged in, frig on auto, hot water off: No gas to stove top
2.Trailer plugged in, frig manually turned to gas, hot water off: gas to stove top after a few minutes of frig "lighting up".
3. Trailer plugged in, frig on auto, hot water turned on to gas: gas to stove top after a few minutes of hot water "lighting up".
4. When there is gas is to the stove top, and I turn off all burners, wait about a minute, then relight, only a very small flame from each burner when on High. After two minutes, no gas to stove top burners.

Will loosening or disconnecting the LP gas line to the stove regulator solve any of this?

[jasin1]

Originally Posted by Don N.

Before I attempt to strong arm loosen the LP gas line to the stove regulator, this is the situation:
1. Trailer plugged in, frig on auto, hot water off: No gas to stove top
2.Trailer plugged in, frig manually turned to gas, hot water off: gas to stove top after a few minutes of frig "lighting up".
3. Trailer plugged in, frig on auto, hot water turned on to gas: gas to stove top after a few minutes of hot water "lighting up".
4. When there is gas is to the stove top, and I turn off all burners, wait about a minute, then relight, only a very small flame from each burner when on High. After two minutes, no gas to stove top burners.

Will loosening or disconnecting the LP gas line to the stove regulator solve any of this?

I would check at a T fitting near the refrigerator…maybe some debris at the T fitting and when you turn on the refrigerator gas it is getting pushed into the refrigerator side of the T….when the gas isn’t flowing to the fridge it blocks off the stove…just a wild thought