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  1. #14
    Join Date
    Feb 2013
    Posts
    10
    The tech told me from the start that he's never seen a unit set up like that in 25 years.
    The flame sensor is on the right side next to the gas inlet and the ignitor is on the left side by the last burner.

    NCstate- Can someone confirm that this set up is right? Do you have access to a diagram?

    He will be back today to install a OEM ignitor

    I do know that the tech replaced the ignitor per the location of the bad one. So I'm guessing there is only 1 location that it could go.

  2. #15
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,573
    Quote Originally Posted by aco2451 View Post
    The tech told me from the start that he's never seen a unit set up like that in 25 years.
    The flame sensor is on the right side next to the gas inlet and the ignitor is on the left side by the last burner.

    NCstate- Can someone confirm that this set up is right? Do you have access to a diagram?

    He will be back today to install a OEM ignitor

    I do know that the tech replaced the ignitor per the location of the bad one. So I'm guessing there is only 1 location that it could go.
    IMO you are on a good track there... Here is a suggestion:
    Give the tech access to your computer... he probably can find the info he needs.

    If indeed the flame sensor and ignitor have been switched... that would account for the pop at ignition.
    Tuff to diagnose things like this without being there or at least looking at a picture.
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  3. #16
    Join Date
    Sep 2002
    Location
    Northeast Ohio
    Posts
    4,855
    Most likely the OEM ignitor will fix the issue.
    A good HVAC tech knows how, an educated HVAC tech knows why!

    DEM


  4. #17
    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary, or ask questions of the OP here. Please apply to the AOPC today, thank you.

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    Last edited by beenthere; 02-12-2013 at 07:04 PM. Reason: Non Pro * Member

  5. #18
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,990
    +1 for ignitor not positioned properly. I encounter that regularly when installing a universal ignitor. Once the position is right the problem is solved.

    I am curious about the sensor and ignitor location. All that I have seen are set up with the ignitor by the first burner and the sensor at the opposite end. However don't all burners get gas at the same time? How would reversing the parts change it.

  6. #19
    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary, or ask questions of the OP here. Please apply to the AOPC today, thank you.

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    Last edited by beenthere; 02-12-2013 at 07:08 PM. Reason: Non Pro * Member

  7. #20
    Join Date
    Feb 2013
    Posts
    10
    One thing I have noticed that all 4 burners ignite a the same time. not one at a time.

    The tech looked over the burners and said that they looked good.

    I tried to take a video of what it's doing. http://<a href="http://youtu.be/NFmw...Fmw2FycMLQ</a>

    *note the video was taken after the first ignitor was installed and intake pipe still intact.

  8. #21
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,990
    Quote Originally Posted by aco2451 View Post
    One thing I have noticed that all 4 burners ignite a the same time. not one at a time.

    The tech looked over the burners and said that they looked good.

    I tried to take a video of what it's doing. http://<a href="http://youtu.be/NFmw...Fmw2FycMLQ</a>

    *note the video was taken after the first ignitor was installed and intake pipe still intact.
    The link does not work.

  9. #22
    Join Date
    Feb 2013
    Posts
    10
    Try this.


  10. #23
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,990
    I can view the video now. And it just sunk in for me that this is a sealed, two-pipe system. The tech needs to check draft, gas pressure and put a combustion analyzer on the system.
    What is the Btu input of the furnace and what size are the PVC vent pipes?

    You need a THOROUGH technician, not just a parts changer.

  11. #24
    Join Date
    Feb 2013
    Posts
    10
    Gas Pressure was adjusted to 3.5, was at 2.1 when he first check it out thinking the pressure was too high.

    I'm not sure on the BTU input I can check that when I get home.

    the PVC pipes are I would guess 4" ID

  12. #25
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,594
    n.e.techjim, this is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary or ask questions of the OP here. Please apply to the AOPC today, thank you.

    You can find the rules for posting and qualifications here.

    Your post has been deleted.
    Further infractions may result in loss of posting privileges.
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  13. #26
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,594
    May have only started for after they changed out the HSI/ignitor. But it was having problems before you bought the house. Thats why the gas pressure was turned down to just over 2".
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