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  1. #1
    Join Date
    May 2009
    Location
    Antioch,il
    Posts
    36

    loud flutter in burners and rollout pops

    l.an intertherm g6ra045c-08,80% in horizontal position in an attic.when first fires up all sounds fine.cant be certiain if its when the blower comes on or when its just heating up,but there is a loud fluttering noise after a minute or two from the burners.do not see any movement in the flames when blower comes on.disconnecting blower does not seem to stop noise.no rollout present at all.gas is at 3.42 i/w and no sign of co in the supply airstream.dont come across many of these intertherms.bad heat exchanger? it is the top rollout switch that keep popping./thanks mick

  2. #2
    Join Date
    Dec 2009
    Location
    Dayton Ohio
    Posts
    22
    You may have crack heatexchanger when rollout pop when blow comes on.
    Last edited by beenthere; 12-19-2009 at 08:24 PM. Reason: Removed bad DIY advise

  3. #3
    Join Date
    Dec 2007
    Posts
    4,770
    WOW!!!!

    why would you leave a potential to kill someone running?

    here mister drunk person take my car, hope you don't kill someone while driving.

  4. #4
    Join Date
    May 2009
    Location
    Antioch,il
    Posts
    36
    furnace was valved OFF and switched OFF also!they have 2.i didnt leave running and never would

  5. #5
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,803
    When in doubt. Do a visual inspection of the heat exchanger.

    Probably is cracked.
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    How many times must one fix something before it is fixed?

  6. #6
    Join Date
    Dec 2007
    Posts
    4,770
    Quote Originally Posted by oldnfuelish View Post
    furnace was valved OFF and switched OFF also!they have 2.i didnt leave running and never would
    my comment was NOT intended for you, but the post before mine.

    it was edited by the moderator, thanks!!!

  7. #7
    Join Date
    Jan 2004
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    PA
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    Quote Originally Posted by pacnw View Post
    my comment was NOT intended for you, but the post before mine.

    it was edited by the moderator, thanks!!!
    Dang moderators.
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  8. #8
    Join Date
    May 2009
    Location
    Antioch,il
    Posts
    36
    thanks

  9. #9
    Join Date
    Dec 2007
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    4,770
    Quote Originally Posted by beenthere View Post
    Dang moderators.

    good moderators!!!

    just did not know how to alert one to the post!!

  10. #10
    Join Date
    Mar 2004
    Location
    Illinois
    Posts
    6,959
    Quote Originally Posted by pacnw View Post
    good moderators!!!

    just did not know how to alert one to the post!!
    The little white triangle with the red border, top right.

  11. #11
    Join Date
    Dec 2007
    Posts
    4,770
    Quote Originally Posted by Senior Tech View Post
    The little white triangle with the red border, top right.
    thanks

  12. #12
    Join Date
    Apr 2009
    Posts
    523
    You'll need to examine the heat exchanger very carefully. You should have pretty good access once you pull the blower motor since its an 80%. Check through the limit at where the heat exchanger starts too.

    If there is nothing and you are sure of that you have a DAM problem (dirt, air, mechanical)...

    Check the manifold pressure and the speed of which the pressure comes on. Check/clean the rust and such from all the burners. Clean out all the orifices. Pull the inducer off and inspect it and the area its covering.

    Being in an attic I could look carefully for insulation that could have been sucked into the heat exchanger. If you pull off the inducer and see a little burnt insulation its most likely issue...

    Heat exchanger first though regardless if the blower effects it. The loss of pressure via a crack/hole can do weird things sometimes...

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