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Thread: hot gas bypass

  1. #1
    Join Date
    Mar 2004
    Location
    long island n.y.
    Posts
    26
    Post Likes
    Sporlin sdr-4 hot gas by pass, dumps in just after txv valve into evap. Valve is still opening and closing even after temp. control board has stopped sending signel. Pid control, valve & board have all been replaced still no luck, maybe getting a backfeed? Any help thanks. P.s. unit is 30ton process chiller

  2. #2
    Join Date
    Apr 2001
    Posts
    2,089
    Post Likes
    is it possible that your board is use like a interface and be control from an external controller, ?
    Don't interrupt me while i'm talking to myself

  3. #3
    Join Date
    Mar 2010
    Location
    Northen Ca
    Posts
    1
    Post Likes

    TCB Bypass

    Is the jumper on the tcb board in the right position or is logic inverted?
    DenisL
    Lowtemp enviormental chambers

  4. #4
    Join Date
    Mar 2005
    Location
    N.J.
    Posts
    149
    Post Likes
    More info. please. Pressures, temps, etc. Try isolating valve and watch your suction ,valve may be doing its job due to low charge or starving evap. from improper metering. Again a little more info please.

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