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  1. #1
    Join Date
    Jan 2008
    Location
    Hidalgo TX
    Posts
    31
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    Carrier EXV Board 32GB500-422

    A time ago we get some carrier exv boards 32gb500-422 we know that boards comes un programmed


    We send 2 boards to carrier service and they can`t program , we do this in one of the boards we take of the IC mini controller and put in the board an used IC from other exv board . The board worked.


    What else would happend 1 the ic don`t works or the IC don`t come programmed .


    What we can do for this ?

    Thanks for your help

  2. #2
    Join Date
    Apr 2007
    Location
    uk
    Posts
    262
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    Find it hard to believe Carrier Service could not download software to both EXV boards.
    Gibbo

  3. #3
    Join Date
    Apr 2007
    Location
    uk
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    Which chiller are they for.

  4. #4
    Join Date
    Jan 2008
    Location
    Hidalgo TX
    Posts
    31
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    Thread Starter
    Quote Originally Posted by Gibbo View Post
    Which chiller are they for.
    Good morning Gibbo
    The chiller model is 30RB09054-5
    The problem of the board is this IC 257-01 ( hd64f3644h)


  5. #5
    Join Date
    Apr 2007
    Location
    uk
    Posts
    262
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    It should be ok, when you say it works what makes you think so. Only when the chiller is running and the EXV' are controlling the superheat at 5c will you really know. You may want to check that the dip switches just below the IC numbered 8 to 1 are correct this gives the board it's address for communicating
    Check as follows 1 = on. 0 = off

    8 7 6 5 4. 3 2 1

    1 0 1 1 1 1 1 1 address = 65

    Gibbo

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