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Low suction

Discussion in 'Residential' started by jamesyarbrough, Sep 22, 2017.

  1. jpb2

    jpb2 Dog Tard *

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    Blind squirrel finds a nut now and again
     
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  2. jamesyarbrough

    jamesyarbrough Amateur Gynecologist

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    someone had cut out the txv previously. I suspect because it was freezing up.
     
  3. Chuck

    Chuck SSP

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    IF your thermometer is accurate and IF you got a good average of the supply temps, I think the only thing that fits is a mixed refrigerant issue, or possibly air bypassing the evaporator.

    Low airflow should give a much higher than 15 split so it must not be low airflow.

    One other thing is a bypass around the evaporator, this would be consistent with your measurements.
     
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  4. jamesyarbrough

    jamesyarbrough Amateur Gynecologist

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    It was replaced today with a high quality bryant system. :D

    Problem solved....if not it won't be MY problem anyway. :lachen:
     
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  5. Rather B Riding

    Rather B Riding Behind bars

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    That will fix it. :beer:
     
  6. MarkusOreallyis-CMS

    MarkusOreallyis-CMS New Member

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    2000 BTU's wouldn't make the system inoperable, or not cool, the suction would rise slightly & the Head would drop slightly, without a piston change, but a drastic change that prevents cooling,
    I would've like to know what the Air temp entering the A/H AT THE ENTERING SIDE OF THE COIL, and the supply temp, Vs the Air Temp entering the RA Filter or RA Grill, I often find leakage at the Air handler's themselves, Whether the Plenum drops off, or a lousy tape job peels, or someone caused damage to the RA Ductwork or Plenum,
    If the system was still in operation I would have asked you if anyone had checked to see if the Aux Heat was energized somehow, either by a miswired Stat, or internally miswired during a previous repair, It's amazing how often I come a cross this issue,
    Anything but the 2000BTUH difference in the new compressor
     
  7. doc havoc

    doc havoc A cunning linguist

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  8. crackertech

    crackertech assholiness *

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    Poof :D
     
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  9. crackertech

    crackertech assholiness *

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    Sorry you can’t follow the rules
     
  10. doc havoc

    doc havoc A cunning linguist

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    That's quite magical how that "poof" works.
     
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  11. Zman

    Zman Hanging by a Thread

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    If-thou-art-pained-by-any.jpg