Results 1 to 9 of 9
  1. #1
    Join Date
    Aug 2007
    Location
    Atlanta, Ga
    Posts
    213

    hissing TXV- continued

    No, I'm not a tech...if the hissing is normal, then so be it...system cools fine, but if hissing is not normal, then I need to call a tech to check it out....I have never noticed it before....please do not close threads so quickly....

  2. #2
    Join Date
    May 2008
    Location
    newnan,ga
    Posts
    57
    A undercharged system prevents the TEV from feeding properly and results in high superheat.The situation is signaled by a hissing sound at the valve,low suction pressure and low head pressure. Call hvac company to come look at it!

  3. #3
    Join Date
    Dec 2002
    Location
    Toledo, Ohio, United States
    Posts
    12,910
    Twilli says these mods are a mean bunch
    No Heat No Cool You need Action Fast

  4. #4
    Join Date
    Dec 2002
    Location
    Toledo, Ohio, United States
    Posts
    12,910
    If you would buy Twilli's latest book

    "Unawswered questions about Expansions Valves"

    you wouldn't have to get humiliated by that mean mod HeyBob
    No Heat No Cool You need Action Fast

  5. #5
    Join Date
    May 2008
    Location
    Lehigh,FL
    Posts
    3

    Confused TXV making a hissing sound

    I have this question on a test I'm taking now and am having a hard time finding the answer??

    A technician hears a thermostatic valve (TXV) making a hissing sound while a refrigeration system is running. What condition in the system would cause this sound?
    A. Excessive head pressure C. Liquid line restriction
    B. Insufficient refrigerant charge D. Vapor line restriction

  6. #6
    Join Date
    Apr 2008
    Location
    Louisville, KY
    Posts
    37
    Or E: Call HVAC person

  7. #7
    Join Date
    Mar 2008
    Location
    round rock
    Posts
    25
    all of the above.

  8. #8
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,913
    Have it checked.

    May or may not be a problem that can be fixed easily.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  9. #9
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,176
    You need to call a service technician. Threads are closed on an as needed basis. Your original thread was giving too much technical information as this one may end up doing also.

    So, like everyone has said, have your system serviced by a professional.


    *******************THREAD CLOSED***************************

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