Results 1 to 7 of 7
  1. #1
    Join Date
    Mar 2005
    Posts
    65
    just replaced condensing unit with suction line filter.At service valves head pressure 180,suction pressure 90.Air-flow in evap coil fine in and out.In 78 out 74,outside ambient 85.Humidity 50%.Superheat almost non-existent.Suction line at outside unit very cold to touch and sweating profusely.Fixed oriface metering device.New house construction.Last outside unit lasted one month and had a severe burn-out.Fosgene gas in the extreme while replacing.Double checked my gauges and ok.Is this a metering device issue-oversized?-or could it be an inproperly charged issue?I'm new and I can't figure why I have such a low temp split along with abnormal low/high pressure readings.No temp diff across suction filter.

  2. #2
    Join Date
    May 2004
    Posts
    12,143

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,311
    Are you putting in the same brand and size condenser as you removed.

    Pump the unit down and check the piston, to see if it is the right size.
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    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    May 2004
    Posts
    12,143
    Are you still doing paper work?

  5. #5
    0 degrees superheat, high suction, low head. looks like
    oversized orfice or oversized coil with overcharge. next time give us subcooling.
    remember subcooling superheat and pressures = correct answere.

  6. #6
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,619
    maybe no orfice
    Aire Serv of SW Connecticut- Gas heat, dual fuel and central a/c systems installed and serviced

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,311
    Originally posted by lusker
    Are you still doing paper work?
    I took a break, got some to do today.

    Thinking about going to camden, to the aquarium.
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    How-to-apply-for-Professional

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

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