Results 1 to 8 of 8
  1. #1
    Join Date
    Jul 2011
    Posts
    20

    mini split cutting off and on

    i have 14k mr. slim and it keeps cutting off and on. it stays on for 5 mins and than back on for 5 mins. is this normal? also the condenser fan speed starts out slow and picks up to high speed befour shutting off. and there is some ice buildup on the small line where the connections come togeter were the foam was cut. is that normal also?

  2. #2
    Join Date
    Sep 2007
    Location
    Boise, ID
    Posts
    4,362
    No it's not normal. Turn it off and call someone before damage to equipment occurs.
    If a nation expects to be ignorant and free, in a state of civilization, it expects what will never be. (Thomas Jefferson 1816)

  3. #3
    Join Date
    Jul 2011
    Location
    Conroe, Tx
    Posts
    2

    Cool

    Sounds like the condenser is cycling on low pressure, the ice could be an indicator of low freon

  4. #4
    Join Date
    Jul 2011
    Posts
    20
    the temp coming out of the indoor unit is 80F when the condenser is running.

  5. #5
    Join Date
    Mar 2003
    Location
    Virgin Islands
    Posts
    19
    No, that is not normal, you are probably getting a flashing green light at the indoor unit. Turn it off and call the installer if he is also a tech. The ice is indicative of a low charge or clog. The best way to determine if it is a low charge is to recover the refrigerant and determine it's weight. Just putting on a set of gauges will tell if it is low pressure but not what is causing it. Your AC tech needs to weigh in the charge, Mitsubishi units use a critical charge. Mitsubishi requires that the system pass a 600 psi pressure test, if it doesn't pass then it has a leak.

    Mitsubishi Dealer in the Virgin Islands

  6. #6
    Join Date
    Jul 2011
    Posts
    20
    there are no flashing green lights.

  7. #7
    Join Date
    Jul 2011
    Posts
    20
    i found a leak. its the small suction line that connects to the indoor evap. i tried to tighten it down with line wrenches but it started leaking even more so i backed down and the leak slowed down. theres not enough extra line to cut and reflare.

  8. #8
    Join Date
    May 2000
    Location
    Rochester, NY, USA
    Posts
    14,414
    Quote Originally Posted by srryan1 View Post
    i found a leak. its the small suction line that connects to the indoor evap. i tried to tighten it down with line wrenches but it started leaking even more so i backed down and the leak slowed down. theres not enough extra line to cut and reflare.
    your going to have to recover the r-22 and add a short section of line and re-flare the tube. Thats your only fix at this point
    LOVE has four letters

    So does BEER, DEER,GUNS AND FISH

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