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  1. Replies
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    Mason, thx for the note. I'll have to check with...

    Mason, thx for the note. I'll have to check with the tech if he remembers what he said the RA temp was..
    That said, your attic temps are probably 20 deg lower than mine although I never measured it...
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    Your logic is faultless, however in my case,...

    Your logic is faultless, however in my case, house was fine with previous old 2t unit.. And now it isn't... Nothing has changed in the house, other than I keep my ground floor unit at even lower temp...
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    Great question! and exactly what I'd like to know...

    Great question! and exactly what I'd like to know myself..

    What I find baffling is that during the peak of the day (outside 102-103) the delta-t is more around 23 sometimes 24 deg. BUT when the...
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    Thanks Dogboy, I think you are saying what my...

    Thanks Dogboy, I think you are saying what my tech was saying... but still sometimes the system cannot achieve even 20 deg. below outdoor temperature for whatever reason... See post above for today's...
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    It is the Carrier warranty. Really? My...

    It is the Carrier warranty. Really? My understanding was that the other dealer can choose whether to pick up your warranty or not, basically they are not obliged to. Not sure if that means like "take...
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    Thanks for your offer, but as I bought >1y ago...

    Thanks for your offer, but as I bought >1y ago from these guys and got a 10y extended Labor and Parts warranty.. I'll have to stick to them. I am sure they will make things right sooner or later. I...
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    great advise! So normally my system should be...

    great advise!

    So normally my system should be able to hold 74-95 if outside temp is in the upper 90s?

    Today's temps (external-internal)
    14:00 98-78
    15:00 99-79
    16:00 103-79
    19:00...
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    I am with you... but I am no pro either, and I...

    I am with you... but I am no pro either, and I let the tech do his work..

    What's the implication of increasing CFM to 800 if the high setting is actually 660?? Will it do any good, or more damage...
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    Sorry copied wrong data: Compressor is...

    Sorry copied wrong data:
    Compressor is 24APA724A ! My bad
    Furnace is correct
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    That's correct. Under the direction of Carrier...

    That's correct. Under the direction of Carrier support, he changed a switch. He told me that the controller will override that switch anyway, but doing that seemed to "unstuck" the system from the...
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    24ANA124A003 CSPHP2412ATA 58CVA070-1-12

    24ANA124A003

    CSPHP2412ATA

    58CVA070-1-12
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    Tedkidd after buying that unit, not much $$ left!...

    Tedkidd after buying that unit, not much $$ left!
    And I don't understand why my 11y old Trane XE1200 2 ton was doing just fine!

    Update at midnight: outside temp at 83 and stat still not going...
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    Appreciate your opinion. Don't worry about...

    Appreciate your opinion.
    Don't worry about muddying water up, I just want to be able to speak intelligently and ask the right questions to my contractor. Tech will take care of the situation, no...
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    Thanks. So a fairly low total ESP with filters...

    Thanks.

    So a fairly low total ESP with filters in place can mean not enough air flow?
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    I am interested in your comment: how about if...

    I am interested in your comment: how about if supply static is low instead?
    How do I deduce the breakdown if I only have the figure my Carrier Infinity stat shows?
  16. I had the same unit (4 ton and 2 ton): I replaced...

    I had the same unit (4 ton and 2 ton): I replaced the 2 ton with Carrier Performance and although tech is still in debugging mode, the unit has performed marvelously on humidity control and ok on...
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    I thought my 12y old XE1200 was noisy.. but when...

    I thought my 12y old XE1200 was noisy.. but when I switched to a Carrier Performance, I got just a marginal improvement on the noise side.
    Don't know about Trane, but I know that the Carrier top of...
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    In the first example, what would be the Sensible...

    In the first example, what would be the Sensible BTU if instead of 20 deg. you had 25 across coil? and what about if you had 700 CFM instead of 800 CFM?
  19. What does your stat show for CFM, Static...

    What does your stat show for CFM, Static pressure, and coil temperature?
  20. If it's any consolation, you are not the only...

    If it's any consolation, you are not the only one! I've got a Performance too (24APA7 2 tons, on 3 ton furnace) and I've got almost exactly the same problem as yours. Check out my thread for more...
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    1/ I think he did verify the compressor is...

    1/ I think he did verify the compressor is operating high stage by looking at the Infinity controller.. Not sure if any other way of checking that he could have checked..
    He did check the...
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    I think it was 90. I mean, when the shoved his...

    I think it was 90. I mean, when the shoved his thermometer inside the return insulation in the attic...

    Indoor temp at the t-stat was 79 or there about.
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    Point well taken on the BTU, I didn't know that....

    Point well taken on the BTU, I didn't know that. I thought 2 ton is 2 ton.
    That said, Manual J said that this system should work but obviously it isn't...

    Sorry, did you say set the system to...
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    Will ask him to check temp at all grilles, vs....

    Will ask him to check temp at all grilles, vs. temp at furnace level.
    I remember that when he installed the system he had said that temp at the grilles was not representative of real temp or temp...
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    by the way, last I checked the ducts were all...

    by the way, last I checked the ducts were all sealed very well and there was no apparent leak AT ALL, in the attic. I think they did a pretty professional job on that front... Can check again if...
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