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  1. By the way, according to Lennox, use approach...

    By the way, according to Lennox, use approach when ambient is warm above 65 degrees; use sub cool during cool weather belie 65 degrees AND also artificially raise the head pressure above 105...
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    I thought NO DIY site

    I thought NO DIY site
  3. You are correct. Today Lennox systems, you will...

    You are correct. Today Lennox systems, you will see that they don't have much of an subcool. Sometimes, it will surprise you.
    But, think about it a little bit. These system run at lower saturated...
  4. You don't need to have llsv on your setup. In...

    You don't need to have llsv on your setup. In facts, it is not good to gave them since it create more issues than help.

    Run the system at lower cfm than 400 since you bring in OSA.

    Try not yo...
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    If you open the wall up, have same contractor out...

    If you open the wall up, have same contractor out to fix the kink cause it is not good to have it.
    $$$ is between you and your contractor.
  6. With my experience dealing with these trane...

    With my experience dealing with these trane climatuff, you MUST use trane start components. I don't know why but other start kit won't work well with it.
    2nd run your system in a/c mode normally for...
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    90% of the time, it is the duct works in the...

    90% of the time, it is the duct works in the attic not properly sealed. Especially, when it is 130 degrees up there. I am sure the installers want to get the heck out of there QUICK.
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    Small panel next to the LEDs located on the short...

    Small panel next to the LEDs located on the short side where the water manifolds/pipes connections are.
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    And the oil keeps disappear? Or the level is...

    And the oil keeps disappear? Or the level is still 1/2 way like you added and it still tripping?
  10. If it served you well for 20 years, then why...

    If it served you well for 20 years, then why change something different?

    Upgrade to higher SEER if you can afford.
    Stay with the technologies.
    Last, stay with Lennox.
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    Your problem is at outdoor. Trane normally uses...

    Your problem is at outdoor.
    Trane normally uses x-valve on both inside and outside next to the txv. Hopefully you did not remove the old x-valve when you changed the old txv.

    By the way one-way...
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    It depends on the leakage rate VS the vacuum pump...

    It depends on the leakage rate VS the vacuum pump CFM rate.

    That's why we MUST turn the pump off when it reaches the (magic number or I call it BS number) and wait for 15 to 20 minutes. If the...
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    You diagnosed correctly.

    You diagnosed correctly.
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    I think you meant start winding like those old...

    I think you meant start winding like those old Trane did in the early 80's.
  15. All old version ECM (motor with 16 pins) have a...

    All old version ECM (motor with 16 pins) have a PWM on pin 10 like you said. BUT, today ECM motor no longer use PWM. They are communicating with 1 and 0.

    You may wanna scratch your idea with ECM....
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    Large is good. Just look out for 2 things: 1-...

    Large is good. Just look out for 2 things:
    1- noise since the hole is larger for the blower noise to travel (especially if you have gas heater in the closet).
    2- if you use 1" filter, the filter...
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    Low DT = make sure heat strips not running

    Low DT = make sure heat strips not running
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    If there is no piston, do you think the OP would...

    If there is no piston, do you think the OP would have such data?

    Think dude!

    That why i said "huh"

    Think man! Think!
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    The OP said "8 DT on indoor coil". If it is lack...

    The OP said "8 DT on indoor coil". If it is lack of air flow, then we should have high DT. Common guys.




    Oh yeah baby! Adding more freon will solve all problems relating to A/C.


    To the...
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    Huh! That is the best...

    Huh!





    That is the best question/advice so far.
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    Is that the TXV that has a nut fitting on the TXV...

    Is that the TXV that has a nut fitting on the TXV outlet, the external line has a 1/4" flare nut, BUT the liquid inlet end of the TXV is solder ????

    If it is then that is DUMBEST design I've seen....
  22. Ask your contractor to set the CFM for 600.

    Ask your contractor to set the CFM for 600.
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    Turn you ac on cool. Go outside for 30 minutes...

    Turn you ac on cool. Go outside for 30 minutes and close all doors. Crack Open you frnt door . If you feel strong cool air hitting your face while opening the door , you have bad installation of...
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    So your dewpoint in the crawl space is 69 to 70...

    So your dewpoint in the crawl space is 69 to 70 degrees. This means if any surface or object is cool at 70 degrees, you will see sweat.

    Bring a bottle of beer that is 69 degrees and put in this...
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    Wonder what is your temperature and your humidity...

    Wonder what is your temperature and your humidity level in the craw space.

    It is all about dewpoint.

    http://en.wikipedia.org/wiki/Dew_point
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