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  1. #1
    Join Date
    Jun 2013
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    Icp inducer motor running non stop

    Hello, l just replaced a pressure switch on a gas furnace
    Fire kicked on but now the inducer motor won’t stop running
    And l get 6 flashes which is pressure switch problems
    That’s not real it’s opening and closing good
    Any ideas already tested the circuit board is good


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  2. #2
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    26,298
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    Time to break out the meter and the wiring diagram!

  3. #3
    Join Date
    Jul 2011
    Location
    DFW, TX.
    Posts
    1,482
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    What code was it showing before you replaced the ps?

    Sent from my LG-G710 using Tapatalk

  4. #4
    Join Date
    Jun 2012
    Location
    Northern NV
    Posts
    2,007
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    Board wants to see PS in open every time it has a call for heat..... Which necessitates the inducer shutting down.

  5. #5
    Join Date
    Jun 2013
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    53
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    Thread Starter
    Quote Originally Posted by Juan Madera View Post
    Board wants to see PS in open every time it has a call for heat..... Which necessitates the inducer shutting down.




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  6. #6
    Join Date
    Jun 2013
    Posts
    53
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    Thread Starter
    Board relay works, it cuts one leg
    Inducer keeps running I think is grounded


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  7. #7
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    26,298
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    Dude

    Stop guessing

    Get a meter and troubleshoot or call someone for service!

  8. #8
    Join Date
    Sep 2002
    Posts
    27,246
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    Power the venter motor through a 120V DPDT relay's contacts. Power the relay coil from the former output voltage to the venter motor.

    Grounded? Does the control board break the power or the neutral to the venter motor? <g>

    PHM
    -------




    Quote Originally Posted by ARIOSTO1 View Post
    Board relay works, it cuts one leg
    Inducer keeps running I think is grounded


    Sent from my iPhone using Tapatalk
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  9. Likes CEAS-AC-TECH liked this post.
  10. #9
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    545
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    Still say you have a bad board.If the relay is opening, why is the fan still running.where is the hot leg coming from to keep the Inducer running?Maybe board has a short in it.So.i still say the board is bad,But it would be much easier to say,If I was on the job site!!!!

  11. #10
    Join Date
    Jun 2013
    Posts
    53
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    Thread Starter
    I see but the board opens one leg l checked that, so only one L2 stays on waiting for the relay to close L1
    So the motor runs on 120 when is a 240
    And l check windings to ground and l have continuity so yes is short
    Thanks for the approach


    Sent from my iPhone using Tapatalk

  12. #11
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    26,298
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    Quote Originally Posted by ARIOSTO1 View Post
    I see but the board opens one leg l checked that, so only one L2 stays on waiting for the relay to close L1
    So the motor runs on 120 when is a 240
    And l check windings to ground and l have continuity so yes is short
    Thanks for the approach


    Sent from my iPhone using Tapatalk
    you really need a more qualified tech on site!

  13. #12
    Join Date
    Jun 2013
    Posts
    53
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    Thread Starter
    Why where’s a loose end here?


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  14. #13
    Join Date
    Jun 2013
    Posts
    53
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    Thread Starter
    Why where’s a loose end here?



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