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  1. #14
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    450
    Quote Originally Posted by ed-man View Post
    I'm sure he knows how to expansion valve works he took the head off of it as I said previously and we put it back together thought we may have had it I have worked with him on this chiller for 3 months. Off And. On I think very highly of him. He is just so busy. And. He don't work on chillers every day. I'm just. Thing to help. Him. Cause we will be trying again. Next week
    As you have found out there is not much to look at when you take apart this type of EXV. It is very unlikely that the push rod is hanging up. As for the power head you will need to leave that to your imagination. The actuator either works or it does not. It only takes at most 30 minute to trouble shoot, that's it. This is where ohms law applies.

    An EXV has to be told what to do, If I were you I would not look at it for more than 30 minute in your last effort and final test. Its very clear that your problem lies elsewhere.

    This is so basic that on average it should take no more than two hours for a true diagnosis. A decade box would help for sure.
    _________________________
    Understand the symptoms and you will and you will find a solution.

  2. #15
    Join Date
    Aug 2012
    Posts
    9
    sorry on response times computer difficulties

  3. #16
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,457
    Quote Originally Posted by supertek65 View Post
    EEV

    electronic expansion valve.

    TEV

    thermal expansion valve

    TXV

    slang for thermal expansion valve
    AEV

    Automatic Expansion Valve
    How to make the perfect "Half-Hitch" knot or any other boyscout knot in 3 easy steps...

    1. Remove your meter leads from the meter and very carefully return them to their storage case or bag.
    2. Wait 2 seconds
    3. Very carefully remove your meter leads from their storage place and enjoy your new knot!

  4. #17
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by alcomech View Post
    As you have found out there is not much to look at when you take apart this type of EXV. It is very unlikely that the push rod is hanging up. As for the power head you will need to leave that to your imagination. The actuator either works or it does not. It only takes at most 30 minute to trouble shoot, that's it. This is where ohms law applies.

    An EXV has to be told what to do, If I were you I would not look at it for more than 30 minute in your last effort and final test. Its very clear that your problem lies elsewhere.

    This is so basic that on average it should take no more than two hours for a true diagnosis. A decade box would help for sure.
    _________________________
    Understand the symptoms and you will and you will find a solution.
    The trouble shooting methods Trane spells out in their Addendum are pretty straight forward. Keep a stop watch or a stop watch app handy and go into the test submenu.

    That and ohming out the windings and checking the integrity of the cable.

  5. #18
    Join Date
    Mar 2005
    Location
    Indiana
    Posts
    159
    I have three EXVs that I changed out 2 months ago if you still need one.

  6. #19
    Join Date
    Aug 2012
    Posts
    9
    Sure do how much do you want and do you have the part numbers

  7. #20
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,833
    show off!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



    Quote Originally Posted by jayguy View Post
    AEV

    Automatic Expansion Valve
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  8. #21
    Join Date
    Jul 2012
    Location
    Southwest
    Posts
    114
    I am not claiming to be a chiller tech, but whats your temp difference across your drier, the shell looking thing before your EXV. Or your air cooled or water cooled unit is seeing freezing cold temperatures... Grab your clamp on, check the temp out of the condenser, then check it before the EXV, is it the same temp, if no, why not?

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