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  1. #1
    Join Date
    Sep 2008
    Location
    dania,fl
    Posts
    73
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    Mcquay aws280 low discharge superheat

    Both ctks running in low discharge superheat and won't stay loaded
    Verified all sensors and transducer accurate

  2. #2
    Join Date
    Mar 2007
    Posts
    3,617
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    Have you checked chilled water flow?
    The key to happiness is lower expectations.

    Don't pick the fly crap out of the pepper.

  3. #3
    Join Date
    Sep 2008
    Location
    dania,fl
    Posts
    73
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    Pressure drop 4
    Don't know design

  4. #4
    Join Date
    Mar 2007
    Posts
    3,617
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    That doesn't seem too bad, but you should probably call the local Daikin office or talk to the customer to see if you can get the design data. Or you can plot the pump's flow with a pump curve. You can usually get those with relative ease from the manufacturer's website. If you run the circuits independently with the other one locked out, does it seem to get better?
    The key to happiness is lower expectations.

    Don't pick the fly crap out of the pepper.

  5. #5
    Join Date
    Apr 2013
    Posts
    54
    Post Likes
    Check calibration of discharge transducer and discharge temp sensor also check oil level if it has a subcooler make sure it's not flooding

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