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  1. #40
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    Dec 2019
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    Quote Originally Posted by BNME8EZ View Post
    It sounds like you have a 2 stg regulator set up. Usually the primary (red) regulator at the tank is non adjustable and drops the pressure to about 5 lb then the one at the house will drop it to working pressure for the house. If the primary does not maintain pressure then the secondary will be wrong also.

    What all do you have on LP? Furnace, range, maybe a water heater? I would try turning the stove on then turn on one of the other appliances preferably not the furnace as it will only try for 4 seconds which isn't much time. Anyway watch the flame on the stove. If it seems to shrink that would indicate one or both of the regulators is not functioning properly as the drop in pressure would cause the flame to shrink. If you observe this you have proof for the LP company that their regulator(s) are bad.
    You are correct - the red regulator is on the tank and the secondary green one outside the house. We have the furnace, on-demand water heater and the stove on propane. The burners seem to flicker and shrink slightly when I turn on the hot water, but not dramatically. Lately, our Wolf stove burners aren't producing large flames even at the highest setting. I now realize this started about the time the furnace was having problems but did not make a connection between the two at the time.

  2. #41
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    Is there another propane provider company that you could switch over to, or at least use as leverage to get the current company to replace their first stage regulator?
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  3. #42
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    Sep 2008
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    VA
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    Quote Originally Posted by Ang2277 View Post
    You are correct - the red regulator is on the tank and the secondary green one outside the house. We have the furnace, on-demand water heater and the stove on propane. The burners seem to flicker and shrink slightly when I turn on the hot water, but not dramatically. Lately, our Wolf stove burners aren't producing large flames even at the highest setting. I now realize this started about the time the furnace was having problems but did not make a connection between the two at the time.
    Wow! I would assume that a gas company would check gas service pressure first, and ensure that's correct without any major fluctuation with other appliances operating.
    "The only true wisdom is in knowing you know nothing" Socrates

  4. #43
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    Aug 2002
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    Southold, NY
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    How long have you had the water heater?

    On demand water heaters use a large amount of gas. With the other appliances running the regulator may not be able to handle the required flow.

    You need the LP supplier to test that regulator as well as the secondary. Along with all supply piping sizes!

  5. #44
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    Dec 2019
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    Quote Originally Posted by timebuilder View Post
    Is there another propane provider company that you could switch over to, or at least use as leverage to get the current company to replace their first stage regulator?
    It's like the mafia over here, lol. We plan on switching during the summer but I hear that switching could be akin to hostage negotiations and they are known to refuse to remove their tanks promptly and also charge a lot for the removal. They said they will be sending someone over to check their regulator but I am deeply suspicious of all their actions now.

  6. #45
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    Dec 2019
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    Quote Originally Posted by pecmsg View Post
    How long have you had the water heater?

    On demand water heaters use a large amount of gas. With the other appliances running the regulator may not be able to handle the required flow.

    You need the LP supplier to test that regulator as well as the secondary. Along with all supply piping sizes!
    We've had the on demand water heater installed same time as the furnace and the propane service. Everything worked well for the first 10 years with no issues at all so I assume either there's a leak in the gas tank or the regulator needs replacing...

  7. #46
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    Dec 2019
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    UPDATE: After replacing both the first and second stage regulators and seeing very little difference, we did a lot more research into our model and at last found the root of the problem! Our burners had been cleaned by three different techs within the last year but apparently not taken out and thoroughly cleaned as they needed to be. We took them out of our furnace after researching AS/Trane burner issues and saw that the burners were pretty rusty and the crossover channels were especially blocked at a few points. Once they were cleaned very thoroughly and opened up, the furnace fired up very smoothly first time, every time. We also ordered brand new stainless steel burners that should help prevent the same issue. Expensive lesson learned - in the end, a lot of research and elbow grease did the job but it's all 20/20 hindsight.

    Thank you everyone who replied to this thread and helped with my education. And HAPPY NEW YEAR!

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  9. #47
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    Aug 2002
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    Thank You for the update.
    Sad that these are the service providers you've gotten, I would still make attempts to find someone qualified. We do come in handy from time to time. Stainless burners are nice but still need maintenance.

    Invest a few hundred in a Low Level CO Detector, not the cheap useless UL approved models but Low Level!

  10. #48
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    Dec 2019
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    Quote Originally Posted by pecmsg View Post
    Thank You for the update.
    Sad that these are the service providers you've gotten, I would still make attempts to find someone qualified. We do come in handy from time to time. Stainless burners are nice but still need maintenance.

    Invest a few hundred in a Low Level CO Detector, not the cheap useless UL approved models but Low Level!
    The tech we hired to get a second opinion about the heat exchanger was great - the only reason he did not examine the burners thoroughly is because the other techs had written they had cleaned them, and the furnace was firing up ok the whole time he was there. He said the furnace itself seemed fine, discouraged us from merely "replacing parts" but said he did not feel he could properly diagnose its strange issue until it actually stopped working. I would definitely trust him for our future needs. And he was the only one who took readings and measured everything.

    If we had hired him in the very first place we probably would have avoided all the subsequent visits and costs. Now we know the difference.

  11. #49
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    Aug 2002
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    Any fuel burning appliance requires a Combustion Analyses with a print out left on the unit. Few tech have the proper tools / knowledge to do this.

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