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  1. #27
    Join Date
    Sep 2002
    Posts
    13,215

    I'm sick of getting my hands slapped

    Apparently there is a razor thin shadow-line between helping and aiding & abetting that I cannot discern accurately.

    Where is it in a case like this?

    For example: can I detail what the numbers mean but not how to obtain them?
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  2. #28
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,566
    I have no idea.
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    How many times must one fix something before it is fixed?

  3. #29
    Join Date
    Sep 2002
    Posts
    13,215

    Yeah; well tanks a lot for nuthin!

    <g>
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  4. #30
    Join Date
    Apr 2007
    Posts
    6,285
    lol

    They tell me his report is incomplete.

  5. #31
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,566
    Quote Originally Posted by Poodle Head Mikey View Post
    <g>
    Your welcome.

    Chicken.
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    How many times must one fix something before it is fixed?

  6. #32
    Join Date
    Sep 2002
    Posts
    13,215

    mbarizona -

    I am not from AZ - which I suspect you are - with a 109 degree outdoor temperature.

    BTW: Can I take that "t-indoors" number to mean: The temperature difference between room temperature to supply air temperature?

    None of those numbers alone seems to indicate anything bad about the unit's operation.

    Ask the tech / service company for some more test numbers:

    The difference between outdoor temperature and the air going into the outdoor unit. And the difference between what is going in the sides and what is coming out the top. That's three separate numbers I want.

    Ask them what happens to the SH number when the SC number is varied by them.

    What does the air filter, blower wheel, blower housing, and indoor cooling coil look like? How dirty or clean are they?

    Are any air returns or registers closed or blocked off?

    PHM
    ------------


    Quote Originally Posted by mbarizona View Post
    I have a Goodman 12 seer, 5 ton unit in a 2100 sq ft house with 9 ft. ceilings; house was built in 2000.


    Disch Press: 325
    Suct Press: 75
    Super: 8* F
    Sub-Cool: 13* F
    T-Indoor: 20
    Ambient: 109

    What exactly do these tell me?
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  7. #33
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,566
    Ithought you were going to tell her what teh SC, and SH mean.
    And that she's just a little low on charge.
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  8. #34
    Join Date
    Jul 2008
    Posts
    25
    I would like to know what those numbers mean and how you obtain them, but for personal knowledge, not to try and fix it - fixing it will be left to a professional (unless the 3A car fuse in the blower burns out).

    I am trying to get further information for future dumb***es that come out here and tell me it is working fine. I want to be able to say "if the SH is _, and the SC is _, shouldn't that say that there is a restriction somewhere?" or something to those lines.

  9. #35
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,566
    Obtaing them requires guages and temp probes.

    Learning what they mean, takes a few years of doing the work.

    Your vapor pressure is a bit low for your operating conditions.

    Your head pressure is about right.

    Your SC is ok.

    But your SH is a tad high.(unless you have high humidity in your house )
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  10. #36
    Join Date
    Apr 2007
    Posts
    6,285
    Quote Originally Posted by mbarizona View Post
    Thanks.

    Superheat is 8* and Sub-Cool is 13*. Don't know what those mean to me, but that is what is written down.
    Has anything changed by chance?

    Any tall shading trees removed?

    Anybody do any work up in the attic that may have damaged duct work?

    Anything at all that would change the heat load on the home?

    And beenthere as usual is dead on with slight undercharge and low suction pressure for the return air temp that was stated earlier....however I am reluctant to say that because there is no form of air flow verification or return air temps just a delta T. You are in a dry climate so I could see a 20* drop from a properly operating system though.

  11. #37
    Join Date
    Jul 2008
    Posts
    25
    Quote Originally Posted by Poodle Head Mikey View Post
    I am not from AZ - which I suspect you are - with a 109 degree outdoor temperature.

    BTW: Can I take that "t-indoors" number to mean: The temperature difference between room temperature to supply air temperature?

    None of those numbers alone seems to indicate anything bad about the unit's operation.

    Ask the tech / service company for some more test numbers:

    The difference between outdoor temperature and the air going into the outdoor unit. And the difference between what is going in the sides and what is coming out the top. That's three separate numbers I want.

    Ask them what happens to the SH number when the SC number is varied by them.

    What does the air filter, blower wheel, blower housing, and indoor cooling coil look like? How dirty or clean are they?

    Are any air returns or registers closed or blocked off?

    PHM
    ------------
    No returns or registers are closed or blocked off. All doors in the house are opened. I installed in cieling speakers a while ago, only had to cross over 1 duct, but did not touch it and it blows air just like the others. I also recently went back up and examined for a tear or crack and felt around it to see if I could feel any air coming out of it.

    The air filter is changed every 30 days religiously. The blower wheel housing and coil look like they are 6 months old...barley dirty. I have seen one that is dirty, at my old house.

  12. #38
    Join Date
    Jul 2008
    Posts
    25
    Quote Originally Posted by BigJon3475 View Post
    Has anything changed by chance?

    Any tall shading trees removed?

    Anybody do any work up in the attic that may have damaged duct work?

    Anything at all that would change the heat load on the home?

    And beenthere as usual is dead on with slight undercharge and low suction pressure for the return air temp that was stated earlier....however I am reluctant to say that because there is no form of air flow verification or return air temps just a delta T. You are in a dry climate so I could see a 20* drop from a properly operating system though.
    Nothing has changed besides air filters and in cieling speakers. No trees removed, sun screens are on and clean.

    I did have a hot water heater replaced, but it is on the opposite side of the house and in the garage. No duct work goes by it, no nothing.

  13. #39
    Join Date
    Apr 2007
    Posts
    6,285
    How many speakers and how large?

    What filter did you change to?

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