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  1. #1
    Join Date
    Feb 2006
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    Phoenix,AZ
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    Wide open txv failures

    Anybody else running into this more frequently. A locked up valve is a no brainer. But, one stuck wide open on a multi evap system sucks! Replaced 2 valves today and both systems contained dye. Could that be contributing to these type of failures?

  2. #2
    Join Date
    Jan 2006
    Location
    DFW Metroplex
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    4,910
    I had one stuck wide open on a new WIF evap coil during a remodel about a year ago. I think it's the first and only time I've ran into a valve stuck wide open like that.

    I'm not a fan of leak dye, but I'm not convinced it would cause a TXV to stick....FWIW
    "The problem is the average person isnt tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and its not in the movies they watch, and its not in the few books that they buy, they dont get it" - Jack Canfield

  3. #3
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,217
    Yep only seen one stuck wide open.... You must be lucky

    Only seen 2 systems with dye though. Would never use the crap myself

  4. #4
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
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    2,895
    Yeah, it is rare. I think the two last week was only my fourth or fifth time seeing it in the 11 or 12 years i've been in the trade!

  5. #5
    Join Date
    Jan 2010
    Posts
    6,838
    So needless to say you had some low superheat or flood back ?
    Oh....and dye sucks. I hate getting that crap in my gauges.

  6. #6
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
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    2,895
    Quote Originally Posted by VTP99 View Post
    So needless to say you had some low superheat or flood back ?
    Oh....and dye sucks. I hate getting that crap in my gauges.
    Yeah, floodback. Even after cranking the stem all the way closed.

  7. #7
    Join Date
    Jan 2010
    Posts
    6,838
    I know that make them with manual lift stems but I never heard of a manual close stem.

  8. #8
    Join Date
    Sep 2012
    Location
    Central Florida
    Posts
    892
    I have seen lots of wide open failures. They are typically caused by someone not wet ragging it cause they are in a hurry and cooking it. Stupid pipers.

  9. #9
    Join Date
    Jan 2005
    Location
    where it's nice and warm
    Posts
    276
    Maybe someone just strip the threads on the valve stem.

  10. #10
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
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    2,895
    Quote Originally Posted by Elfshadow View Post
    I have seen lots of wide open failures. They are typically caused by someone not wet ragging it cause they are in a hurry and cooking it. Stupid pipers.

    Would that show up immediately? Or several years later?

  11. #11
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
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    2,895
    Quote Originally Posted by ararams View Post
    Maybe someone just strip the threads on the valve stem.
    If that was the case. I wouldn't have been able to thread it in until it stopped!

  12. #12
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
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    Probably ice or dirt. Or in Rheems (alco?) case a manufacturing defect!

  13. #13
    Join Date
    Oct 2012
    Location
    Wisconsin
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    4,439
    Quote Originally Posted by Elfshadow View Post
    I have seen lots of wide open failures. They are typically caused by someone not wet ragging it cause they are in a hurry and cooking it. Stupid pipers.
    Quote Originally Posted by KB Cool View Post
    Would that show up immediately? Or several years later?
    Back when I first started I had a turbotorch, and I changed a couple txv's and overheated them pretty bad. Both worked for at least a year and then they both stuck open.

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