I can light them, but they are weak and will burn out. -propane fridge happy-bled tank thinking overfill-all three burners same problem-tried the spare 20lb tank (known good, was used previous to this prob)-hot water heater ok, strongIt seems to be pointing to the range, or the feed to the range?

Lift stove top and check burner tube connections to manifold......that is where the 'orifices' are.They could be clogged, burner tubes cloggedOR stove top/oven LP Reg has failed.It maintains 10"WC for stove & Oven burners provided Main LP System is maintained at 11"WC

I would visually inspect as much of the line from the main distribution manufold to the burners as I could. IF the other propane powered stuff is happy. most of the suggestions I have go poofYou have propane (NOTE Overfill won't bother it)The REgulator is workingIf you have a solnoid valve controlled by a gas detector it's openMain tank valve is openSince you have 3 burners (most stoves) the odds of all THREE valves failing at once approach snowball in a blast furnace (Though I was going elsewhere didn't you.. Same heat). That leaves the orifices (Gas jets) spider webbed or a pinched gas line.

have you done any repairs in this area? seems real strange for three to go bad.

Thanks for the info..I am not there but I had the wife text me pics.So it appears as if there is a pressure regulator present. If you lift the range top, you can see the copper propane line entering. It goes first to the regulator, then the regulator feeds a LP service bar/pipe that includes all of the knobs for the range and the oven.I will be trying to light the oven when I get home. I didn't think to try this before. We have been having troubles keeping the oven lit lately.........I was thinking the oven problem was the pilot heat sensor getting a blanket of carbon on it, so I have been wire brushing it before the oven is used.Maybe its the regulator..

I seem to remember when my main outside regulator failed...I think it was the furnace that was the tip off. It wasn't getting enough propane? The light users were all happy if I recall.Is it the heavy users that first show problems when the regulator fails?

Suddenly, rangetop burners not getting propane..

dougrainer
Nomad
May 12, 2020
groundhogy wrote:
The main regulator is 3-4 years old.
It switches between the two 30lb tanks.

The "MAIN" regulator and the Auto Switch over are the same part. You should replace both as a set for best results. Almost ALL replacements are the set, not the regulator and then the Auto switchover valve. A BAD Water Heater Flame will still heat the water but takes a long time. Your Oven/Range has its OWN regulator and that reduces the Pressure from 11.5 down to 10 which is what the Oven runs at. You NEED a Pressure test to make sure you have 11.5 inches pressure. OIL in the LP lines can also cause your problem, but usually affects all LP appliances. Not having a pressure test, you are just left replacing various parts. Doug
enblethen
Nomad
May 12, 2020
What you call the main regulator is the one you should have changed out!
groundhogy
Explorer
May 12, 2020
The main regulator is 3-4 years old.
It switches between the two 30lb tanks.
groundhogy
Explorer
May 12, 2020
There is propane coming in.

The burners are weak.
The oven burner runs but wife says it was stronger.

Refrigerator running (but isnt that like a very small flame?)
Hot water heater makes hot water
Harvard
Explorer
May 12, 2020
groundhogy wrote:
I swapped out the regulator and NOTHING.
Still the same.

What now?

Do a "Soap Bubble" test for gas flow/pressure at input to the regulator in question.

If no bubbles then troubleshoot "why no pressure".

Has this stove ever worked properly in the past history?
groundhogy
Explorer
May 12, 2020
I swapped out the regulator and NOTHING.
Still the same.

What now?
groundhogy
Explorer
May 04, 2020
I think it’s looking pretty stong that its the 10” pressure regulator.
I’m going to buy one and try it.
Matt_Colie
Explorer II
May 04, 2020
When you get through with the above, lift the cook top and see if there is either a valve or a regulator under there.

If there is a valve, check that it is open and clear.

If it is a regulator, check with the manufacturer to find what the burner pressure is supposed to be and how they advise that you check it.

Matt
Dusty_R
Explorer
May 04, 2020
What happens if you light one burner at a time, and let it burn for a minute then a second one, then third? Watch to see if the first burner fades when next burner is lit.
Carl_n_Susan
Nomad II
May 04, 2020
You didn't say what RV you have, but if the stove is in a slide out, check for a kink in the flexible line under the slide.

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