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  1. #1
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,094

    So the problem is....

    System has 20° split, indoor temp 73°, supply air temp 53°, outdoor temp 80° ambient.

    Anyone else see a problem here?
    Would you catch this problem if you were not reading Sub Cooling and Superheat temps? A little blurry SH on left and SC on right.

    John

    Outdoor unit
    Lennox
    HS26-060
    R-22 system
    Indoor coil
    ADP
    LC42/60Y2CP

    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  2. #2
    Join Date
    Jul 2013
    Location
    Harrisburg, PA
    Posts
    281
    So you have an evap temp of 38, which means your suction line is 95. Condensing temp is ~98, and liquid line is ~74. Bad compressor valves I'd suspect because of the really close suction and condensing temps.

  3. #3
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,008
    Restricted drier between expansion valve.

  4. #4
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,094
    Quote Originally Posted by SBKold View Post
    Restricted drier between expansion valve.
    Bingo SBKold. I should have said this coil has a TXV valve. She is getting a new filter drier and TXV valve next week. I don't really care witch one is causing this I am just going to replace both items so it gets solved. My suspicions are the TXV valve is bad. I might as well replace the filter drier if were opening her up. We can pump down outdoor unit and save most of this refrigerant. Some of it will have to be recovered because someone has added to much.

    John
    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  5. #5
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,008
    Ive done about half a dozen of these Jkopp on these older HS26 s. I think You will find the drier is very hard to blow through. I have good luck throwing a piercing valve between the outdoor expansion valve and the drier to verify the pressure drop.

    Its more than likely the txv is ok. But I undrerstand how you might as well throw a fresh valve on too.

    I Kinda think the core on the driers they chose had a significant PD new and slowly get worse over time.

  6. #6
    Join Date
    Jul 2013
    Location
    Harrisburg, PA
    Posts
    281
    Bad filter drier should have a temperature difference between inlet and outlet.

  7. #7
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,094
    SBKold That sounds like a good idea, I think we will do that just to know. The drier was field installed next to the TXV and was not factory installed in the outdoor unit. One does not always get a temp drop on a drier not fully restricted like this one.
    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  8. #8
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,008
    Quote Originally Posted by CoolShowers View Post
    Bad filter drier should have a temperature difference between inlet and outlet.
    This is true but sometimes its only 2-5deg due to the overcharged and high SC. The SC is even higher before the restriction. You can make the temp drop more significant by recovering some juice.

    JKOPP - that would be an awesome test if you had the time day of repair to put your smans clamps before and after drier initially and then recover until SC is close to nil and see if drop is more noticeable.

  9. #9
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,008
    Quote Originally Posted by JKopp View Post
    SBKold That sounds like a good idea, I think we will do that just to know. The drier was field installed next to the TXV and was not factory installed in the outdoor unit. One does not always get a temp drop on a drier not fully restricted like this one.
    I'm sorry forgot that I'm used to HP26 s . There is no factory drier on a straight cool?

  10. #10
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,094
    Some of the earlier ones had a factory drier installed but not on this one. We field installed. This is better because it gives me a pressure tap before the drier and if I do your little trick I will have a pressure tap after it.
    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  11. #11
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,094
    SBKold, I see your in Florida. Sales of my product are mostly going to Florida. Any chance your company would be interested? If your selling Lennox, Nordyne or Rheem it works quite well for the installers. I have links listed below.

    John
    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  12. #12
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,008
    Quote Originally Posted by JKopp View Post
    SBKold, I see your in Florida. Sales of my product are mostly going to Florida. Any chance your company would be interested? If your selling Lennox, Nordyne or Rheem it works quite well for the installers. I have links listed below.

    John
    I really think its quite innovative John. We are a two man operation. Just me and dad. Well actually just dad right now because a month and a half ago I had an accident and broke my back and had to have surgery. We sell York and goodmana does it work with them?

    If there is anything I could do to get the word out to our local supply houses let me know

  13. #13
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    20,909
    Quote Originally Posted by SBKold View Post
    I really think its quite innovative John. We are a two man operation. Just me and dad. Well actually just dad right now because a month and a half ago I had an accident and broke my back and had to have surgery. We sell York and goodmana does it work with them?

    If there is anything I could do to get the word out to our local supply houses let me know
    Sorry your back is messed up... I have been tending disc issues for over 30 years. HVAC-R work is tuff on the bodies.

    Neat product. I use a slightly different approach... helpers and install crews...
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

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