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  1. #1
    Join Date
    Oct 2004
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    I had a American Standard (Trane) compressor today that was bypassing because of high head. I cleaned the coil, got the head pressure down, but the compressor is still bypassing a little. It's not doing it as much as before, but it's just enough to make the system not cool enough. If the internal bypass doesn't seat all the way, is the compressor junk?

  2. #2
    Join Date
    May 2004
    Los Angeles, CA
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    Dear Mmmbuffalowings,

    If the compressor is a semi-hermetic or open compressor then the high side internal bypass can be field replaced, if it’s not a screw machine.

    If it’s a screw machine, the factory has to perform the work.

    If the compressor is a hermetic one, you have to replace it.

    Respectfully Submitted,
    John J. Dalton

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