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Thread: RTAC noise

  1. #1
    Join Date
    Oct 2003
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    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
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    Mar 2007
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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
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    Mar 2004
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    That loud slap you hear after shutdown is the checkvalve(s) closing . Its normal .
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the garage , greasin', oilin' . tweakin' n shinin' Roll on spring 2015 !!

  4. #4
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    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
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    Sounds like the stepper motor in the carrier EXV'S sounded like that when they indexed.

  6. #6
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    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 toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the garage , greasin', oilin' . tweakin' n shinin' Roll on spring 2015 !!

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