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  1. #14
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    Quote Originally Posted by Olivero View Post
    What you posted is not a defrost mechanism.

    Some walk in's rely on "turning off" as a defrost, that's how a lot of what I work on are.

    But if the issue is that it's freezing up all the time, you will need a technician.

    Based on the iceberg on the side of your picture, i'd say you need a technician.

    I can't help myself, one easy question, Is the evaporator fan spinning?
    The right direction?

  2. #15
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    Apr 2010
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    [QUOTE=ajcamp;25744155]
    Can you tell me what this mechanism is? And how it works?



    The device appears to be a (DBV), "discharge bypass valve", to help dial in capacity control.

  3. #16
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    It looks more like a TXV to me.

    PHM
    --------


    [QUOTE=lzenglish;25745583]
    Quote Originally Posted by ajcamp View Post
    Can you tell me what this mechanism is? And how it works?



    The device appears to be a (DBV), "discharge bypass valve", to help dial in capacity control.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  4. #17
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    [QUOTE=Poodle Head Mikey;25745731]It looks more like a TXV to me.

    PHM
    --------
    \

    I agree that it is a TXV myself, 100%. I'm talking about the "Rusty Valve" with copper line attached to the TXV body. This is what the OP is asking i do believe, but i may be wrong. ?

  5. #18
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    Oct 2011
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    Methinks if the coil is freezing on a cooler, the "defrost mechanism" in question is not the issue
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  6. #19
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    Quote Originally Posted by 2sac View Post
    Methinks if the coil is freezing on a cooler, the "defrost mechanism" in question is not the issue
    Who said it was a defrost mechanism? Not I. I said it MAY be a discharge bypass valve, for evap coil load control, which sporlan did make> But not sure?.It has to be some type of load control, imo, much like an epr valve or desuperheating valve, or other, just guessing tho? PS: If i did have the unit model number, it would not take long to find out for sure ! Lol

  7. #20
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    Quote Originally Posted by lzenglish View Post
    Who said it was a defrost mechanism? Not I. I said it MAY be a discharge bypass valve, for evap coil load control, which sporlan did make> But not sure?.It has to be some type of load control, imo, much like an epr valve or desuperheating valve, or other, just guessing tho?
    The OP called it a defrost mechanism
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  8. #21
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    Sep 2002
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    I believe that is a replaceable inlet screen housing.

    PHM
    --------



    [QUOTE=lzenglish;25745775]
    Quote Originally Posted by Poodle Head Mikey View Post
    It looks more like a TXV to me.

    PHM
    --------
    \

    I agree that it is a TXV myself, 100%. I'm talking about the "Rusty Valve" with copper line attached to the TXV body. This is what the OP is asking i do believe, but i may be wrong. ?
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  9. #22
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    Quote Originally Posted by 2sac View Post
    The OP called it a defrost mechanism
    Ok 2sac, i see that now, and remember reading it, but "I Don't Think So" !

  10. #23
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    [QUOTE=Poodle Head Mikey;25745799]I believe that is a replaceable inlet screen housing.

    PHM
    --------



    Ok, maybe i'm turned around here. I see one txv inlet, one txv outlet to distribution, and one 1/2 inch copper line off the rusty valve in question going to places unknown,or back to main discharge line, to me anyway? yes no or other?

  11. #24
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    Jun 2006
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    External equalizer line. Required by presence of distributer.

  12. #25
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    Quote Originally Posted by stat View Post
    External equalizer line. Required by presence of distributer.
    Ok, I buy that, Thanks! And mikey was correct on the screen then as well. PS: A clear cut case of over thinking it for me, and bypassing the obvious.

  13. #26
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    Guru

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