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  1. #1

    OK fellas, what's going on here

    **Lennox 15 y/0 gas-fired furnace (not NG)

    **Ran dirty and sooty for years until (finally) got tech back to clean and install the device that introduces gas into the thing-been running fine this heating season

    **Fairly new MERV 12 filter (been running these for years w/o a prob.

    **Just whalago (while a go here in Dixie) the motor took 2-3x longer than usual to get up to speed. Sounded sorta like an older car w/the battery down or starter beginning to go.

    **I have THOUGHT here recently that it was taking longer, but hadn't really listened for it.

    Thoughts and opinions are appreciated and noted.
    AG
    North Miss.

  2. #2
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,874

  3. #3

    JUST WANT AN OPINION

    Quote Originally Posted by the dangling wrangler View Post
    I wouldn't dare try to repair anything like this, JUST OPINIONS

  4. #4
    Join Date
    Nov 2008
    Posts
    1,673

    not in order of likelihood

    The motor capacitor changed value or failed.
    A high resistance (loose or corroded connection or bad relay contacts) upstream of the motor.
    An abnormally high load on the motor.
    Motor bearing failure.
    Bad mojo or bad juju in which case you hire these guys
    http://www.youtube.com/watch?v=Ewu1laA2nmI

    Good relay contacts have 30mV or less at rated current, bad ones have more than 100mV.

  5. #5

    Gratis

    Quote Originally Posted by WhoIsThat? View Post
    The motor capacitor changed value or failed.
    A high resistance (loose or corroded connection or bad relay contacts) upstream of the motor.
    An abnormally high load on the motor.
    Motor bearing failure.
    Bad mojo or bad juju in which case you hire these guys
    http://www.youtube.com/watch?v=Ewu1laA2nmI

    Good relay contacts have 30mV or less at rated current, bad ones have more than 100mV.
    That's all I needed

  6. #6
    Join Date
    Apr 2008
    Location
    Alberta Canada
    Posts
    2,246

    My Opinion is

    Quote Originally Posted by AvantGarde View Post
    I wouldn't dare try to repair anything like this, JUST OPINIONS


    It is almost impossible to troubleshoot from here, you should call a professional.
    Do it right the first time.

  7. #7
    Join Date
    Sep 2002
    Location
    Northeast Ohio
    Posts
    4,846
    What ever the cause, the symptoms are not good and the prognosis is it will need professional help soon.
    A good HVAC tech knows how, an educated HVAC tech knows why!

    DEM


  8. #8
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    15 years old. Start thinking about a replacement upgrade.
    How tall are you Private???!!!!

  9. #9
    Join Date
    Jan 2002
    Location
    Ft.Worth,Tx
    Posts
    4,584
    Quote Originally Posted by WhoIsThat? View Post
    The motor capacitor changed value or failed.
    A high resistance (loose or corroded connection or bad relay contacts) upstream of the motor.
    An abnormally high load on the motor.
    Motor bearing failure.
    Bad mojo or bad juju in which case you hire these guys
    http://www.youtube.com/watch?v=Ewu1laA2nmI

    Good relay contacts have 30mV or less at rated current, bad ones have more than 100mV.
    If he's in the south must be the MoJo , the juju is north of the Mason Dixon Line.
    "Everyday above ground, is a good day".
    "But everyday that you have made a difference in someones life, may insure you stay above ground a little longer".<aircooled>

  10. #10
    Join Date
    Nov 2008
    Posts
    1,673
    Quote Originally Posted by aircooled53 View Post
    If he's in the south must be the MoJo , the juju is north of the Mason Dixon Line.
    I would ask how you know that, but I have to work some chicken bones against a troublesome neighbor.
    Or maybe I'll just make a little doll and stick pins in it.

  11. #11

    Snarl

    Quote Originally Posted by Gunnery Sergeant Hartman View Post
    15 years old. Start thinking about a replacement upgrade.
    Snarl again

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