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Mini split

Discussion in 'Hvacbay' started by Veloci_lobster, Jun 16, 2017.

  1. Texas-Tech

    Texas-Tech Official Geezer*

    Messages:
    17,734
    Location:
    duhh
    Is it a stepper type valve? We have had issues with the connection, pins in the plug having corrosion, not connecting properly
     
  2. Veloci_lobster

    Veloci_lobster New Member

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    25
    Location:
    Minnesota
    I'm not sure. I'll have to check on that when I get back to work.

    Sent from my XT1565 using Tapatalk
     
  3. jamesyarbrough

    jamesyarbrough Amateur Gynecologist

    Messages:
    3,738
    Location:
    Denison TX

    Yep. Im thinking airflow
     
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  4. Chuck

    Chuck SSP

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    7,914
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    LAX
    You need to check superheat, if it's high then you have a refrigerant restriction or LEV not opening. If it's low then you have a plugged blower inside or some other airflow problem.

    Was suction line frosting? Or warm?
     
  5. Veloci_lobster

    Veloci_lobster New Member

    Messages:
    25
    Location:
    Minnesota
    Not frosting but sweating.

    Sent from my XT1565 using Tapatalk
     
  6. Chuck

    Chuck SSP

    Messages:
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    Location:
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    I would lean toward a restriction. Most of them have a cap tube in addition to the LEV. And usually a bullet strainer before the cap tube that can plug.

    What about the small line, was it frosting?

    How certain are you on your gauge accuracy?
     
  7. Veloci_lobster

    Veloci_lobster New Member

    Messages:
    25
    Location:
    Minnesota
    Actually come to think of it. I think the suction line was sweating and cold at first, then the liquid line began sweating and the suction line got warmer, this happened pretty quickly after charging. If memory serves correctly. Seems like it could be a restriction.

    Sent from my XT1565 using Tapatalk
     
  8. crackertech

    crackertech assholiness *

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    It's broken and can't be fixed you need a new one.:D
     
  9. Chuck

    Chuck SSP

    Messages:
    7,914
    Location:
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    Open up the outdoor unit and watch it run. You will definitely see frosting at the restriction with only 40 psi suction pressure
     
  10. Veloci_lobster

    Veloci_lobster New Member

    Messages:
    25
    Location:
    Minnesota
    I'll try that once we can get back to it

    Sent from my XT1565 using Tapatalk
     
  11. jamesyarbrough

    jamesyarbrough Amateur Gynecologist

    Messages:
    3,738
    Location:
    Denison TX


    Its not a liquid line. Its saturated vapor because the metering device is outside. Thats why you insulate both lines on mini splits
     
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  12. tuna

    tuna New Member

    Messages:
    2,915
    I'd say the little line is a liquid line. Cold saturated liquid.
     
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  13. jamesyarbrough

    jamesyarbrough Amateur Gynecologist

    Messages:
    3,738
    Location:
    Denison TX
    Point being its s mix of liquid and flashing gas that has already went threw the metering device. Not a subcooled liquid
     
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  14. knave

    knave Undeterred

    Messages:
    8,193
    Location:
    Out for a rip
    I know "nothing" about mini splits.
     
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