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  1. #1
    Join Date
    Aug 2010
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    York YLAA0100 plate heat exchanger

    Has anyone experienced failures of the plate type heat exchangers in York YLAA 100 ton chillers with under 5 years of service? I have a new customer with multiple chillers that have had these heat exchangers develop leaks allowing freon into the chilled water side.

  2. #2
    Join Date
    Nov 2019
    Location
    Dc
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    Seen it a few times but I’m the heat recovery side. Never saw the evaporator heat exchanger fail.

  3. #3
    Join Date
    Aug 2019
    Location
    LA
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    23
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    Yes. Usually on variable flow systems. TXV or EEV? There has been some valve replacements to correct issue. New valves are sporlan.

  4. #4
    Join Date
    Aug 2006
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    Mixing oil and fire with a big spoon.
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    There are some flow switch changes as well. If you have the Danfoss EEVs there is a software upgrade. There is also a processor software upgrade. If your unit was affected, it should have been upgraded by the local office for free (upgraded txvs are not included).

    if your unit isn’t covered, then I would recommend looking into the Sporlan EEV upgrade and having your flow issues investigated.
    "Right" is not the same as "Wise".

    Don't step on my favorite part of the Constitution just to point out your favorite part.

  5. #5
    Join Date
    Nov 2011
    Location
    East Side
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    They had software and EXV controller issues with a large run of units....hundreds. Your serial number should have been included in the service repair bulletin, and corrected under warranty.

  6. #6
    Join Date
    Aug 2010
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    Thread Starter
    thanks for that information. Is there a place online I can run this serial number to see if this unit is in the group with software and EXV controller issues?

  7. #7
    Join Date
    Aug 2006
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    Quote Originally Posted by my2nd40 View Post
    thanks for that information. Is there a place online I can run this serial number to see if this unit is in the group with software and EXV controller issues?
    Not that I am aware of. PM me your serial number.
    "Right" is not the same as "Wise".

    Don't step on my favorite part of the Constitution just to point out your favorite part.

  8. #8
    Join Date
    Sep 2008
    Location
    dania,fl
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    Was the upgrade related to the service bulletin on low pressure trips

  9. #9
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
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    Quote Originally Posted by the wizard View Post
    Was the upgrade related to the service bulletin on low pressure trips
    there were low pressure trip issues, but the main fault was heat exchanger failures.
    "Right" is not the same as "Wise".

    Don't step on my favorite part of the Constitution just to point out your favorite part.

  10. #10
    Join Date
    Aug 2010
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    3
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    Thread Starter
    Quote Originally Posted by jayguy View Post
    Not that I am aware of. PM me your serial number.
    I can't pm you can you email me so I can send the serial #
    tomsforty@gmail.com

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