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  1. #1
    Join Date
    Jul 2006
    Posts
    1
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    Hmm

    today a package unit that had a fan motor not turning the capacitor was out it tried to run for hrs probly with no condenser fan motor it was steaming hot my lowside gage pegged out after i got everything running the lowside never pulled down. the suction line was cool how come it didnt pull down. the high side was 290 -300 psi it has r22 freon and was about 100 degrees outside the compressor was making a loud hissing sound is this a bad lowside valve

  2. #2
    Join Date
    Jul 2006
    Location
    Lancaster,Ohio
    Posts
    483
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    Sounds to me like you have your blue and red valve open on your gage manifold set.
    IcyFlame

  3. #3
    Join Date
    Jul 2006
    Posts
    1,091
    Post Likes
    the compressor has a pressure by pass. Compressor is running, but the pressure is equalized. Turn the unit off and the valve reset.

  4. #4
    Join Date
    May 2006
    Location
    east central indiana
    Posts
    1,117
    Post Likes
    Occasionally those pressure bypass valves can stick.

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