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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
    17,838
    This should be in the pros forum.
    "Politicians are the lowest form of life on Earth. Liberal Democrats are the lowest form of politician"

    - General George S. Patton

  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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