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  1. #14
    Join Date
    Jun 2008
    Location
    Wisconsin, USA
    Posts
    64
    Not enough data... Besides the condensing coil being clean, type of condensing coil (fintube or spinfin), size of condensing coil, heat load on dwelling (system properly sized), Correct system charge... There are so many variables that the question cannot be answered as asked.

  2. #15
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    124* is damn close to flashing in the liq line.

  3. #16
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,174
    Quote Originally Posted by tonydykes55 View Post
    if a filter dryer is clogged would the line be hotter coming from the condenser and colder on the evap side and would it cause high head pressure?
    No, the condenser wouldn't be hotter, but the LLFD generally would be cooler on the evap side, And wouldn't raise head pressure that it would be overly high, unless the total charge was more then the condenser can hold, or the unit was over charged.
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  4. #17
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Quote Originally Posted by beenthere View Post
    No, the condenser wouldn't be hotter, but the LLFD generally would be cooler on the evap side, And wouldn't raise head pressure that it would be overly high, unless the total charge was more then the condenser can hold, or the unit was over charged.
    Beg to differ Beenthere.If a restriction exists it could be severe enough to cause volume of suction gas returning to cool comp to be reduced.
    This can cause a superheated condition in condenser on a high load and ambient conditio.

  5. #18
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,174
    That would cause the compressor discharge gas to be hotter. But the refrigerant exisiting the condenser coil would not be.
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  6. #19
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Quote Originally Posted by beenthere View Post
    That would cause the compressor discharge gas to be hotter. But the refrigerant exisiting the condenser coil would not be.
    It can. Been on both residental and commercial jobs with press over 325psig

    and the gas can't be de-super heated so the condenser is blazing.

  7. #20
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,174
    Was the cause of the high pressure a clogged LLFD.
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  8. #21
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Quote Originally Posted by beenthere View Post
    Was the cause of the high pressure a clogged LLFD.
    Filter or bad txv jammmed partialy shut.

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