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Thread: RTAC noise

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  1. #1
    Join Date
    Oct 2003
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    tidewater, va
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    2,144

    RTAC noise

    Wa testing a small RTAC today and noticed after shutdown a tapping noise coming from both discharge lines. Machine is an 03 model...could my check valves be cutting up?


    r404a

  2. #2
    Join Date
    Mar 2007
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    State of Confusion
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    I thought that was normal for the check valves to make noise..lol

    lots of them do it. I don't think anything is wrong..besides its a trane..

  3. #3
    Join Date
    Mar 2004
    Location
    ottawa canada
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    2,081
    That loud slap you hear after shutdown is the checkvalve(s) closing . Its normal .
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  4. #4
    Join Date
    Oct 2003
    Location
    tidewater, va
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    2,144
    thanks guys

    trouble is, it was not a single slap, it was a continuos tapping for the remainder of the day. strange


    r404a

  5. #5
    Join Date
    Jul 2009
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    In a mechanical room....
    Posts
    1,888
    Sounds like the stepper motor in the carrier EXV'S sounded like that when they indexed.

  6. #6
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,081
    Did you have water flow while it continued to make noise ??? If so it could be that the different temperature of water was causing refrigerant migration making the check valves flutter????
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

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