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Thread: 90 PLUS carrier

  1. #1
    Join Date
    Jan 2002
    Posts
    12
    I'm having trouble getting this furnace fired up. The led indicates pressure switch not closing. I checked the pressure switch and it seems to be Ok. I also checked all hoses and seals around inducer housing.I REMOVED intake and exhaust pvc piping. model 58mxa040 serial 1597a00971

  2. #2
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Did you trace out where the voltage drops off?

  3. #3
    Join Date
    Jan 2002
    Posts
    12
    no can you explain that.
    by the way I forgot to mention I found water in inducer housing

  4. #4
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Uhhh.. that's normal for a ninety plus. At least a little bit.
    How far did you get with the contol voltage before it stopped reading?

    Is this your furnace?

  5. #5
    Join Date
    Jan 2002
    Posts
    12
    It had a good amount of water enough to spill out to the floor. actually I didn't do a thorough control voltage check.When I started the unit it went threw ignition trial and then I checked the code on the board.

  6. #6
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    17,906
    This should be in the pros forum.
    " Kill a Commie for Mommy! "

    - Colonel David Hackworth (1930-2005), Korean War Vet

  7. #7
    Join Date
    Jan 2006
    Location
    Hamilton Ontario Canada
    Posts
    1,406
    Check your condensate drain to make sure it is not blocked. To much water will cause that problem.

  8. #8
    Join Date
    Jan 2002
    Posts
    12
    Drain is clear

  9. #9
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Where did you check for drain blockage?


  10. #10
    Join Date
    Jan 2002
    Posts
    12
    trap

  11. #11
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Time to do a diagnostic check on the rest of the system.
    I still need to know if this is your furnace or not.
    There are things you can do with private property that you can't on a service call.

  12. #12
    Join Date
    Jan 2002
    Posts
    12
    This is private property

  13. #13
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    HMMMMMmmmm....

    Why aren't you doing a diagnostic? Your profile says you are a cotractor.

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