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  1. #1

    LG Mini split LA090HSV2 fan runs all the time

    I have a LG Art Cool Mirror 1 ton. I just turned it on for the season. The fan never stops running I notice but the compressor does.

    This was installed last year to cool a large upstairs room. The room has 2 AC vents from the Central Unit but in Texas during summer the upstairs needs help. It's a pretty big room. I don't mind the fan running per-se' because the LG unit is on the opposite end of the the room from the vents and the stairwell. So it pulls air across the room when cold air from the vents would tend to just drop down the stairwell.

    Still... is it supposed to operate that way? The manual for these units are not very good. Or is the fan supposed to turn off when the compressor does like my central unit does.

    This compressor has the inverter technology which I think means the compressor operates at multi speeds. Maybe the running fan is part of that?


    Thank you for your help.

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
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    34,084
    Can't say about LG for sure but most minis do run the fan constantly.

    Sent from my HTC VLE_U using Tapatalk 2

  3. #3
    Quote Originally Posted by BaldLoonie View Post
    Can't say about LG for sure but most minis do run the fan constantly.

    Sent from my HTC VLE_U using Tapatalk 2
    Thanks BaldLoonie. I wish the manual was a bit better about explaining how these things work.

    The mini splits are new in my neck of the woods. My long time AC man knew nothing about them and I think I was the first for my contractor.

  4. #4
    Join Date
    Dec 2007
    Posts
    4,698
    which fan are you talking about, inside or outside?

    how do you know the compressor is off?
    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

  5. #5
    Join Date
    Dec 2002
    Location
    Arizona
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    4,366
    Quote Originally Posted by BaldLoonie View Post
    Can't say about LG for sure but most minis do run the fan constantly.

    Sent from my HTC VLE_U using Tapatalk 2
    As does LG!
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  6. #6
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    I don't know LG that well, but most mini splits can be set to only run when cooling or heating is needed, but the default setting is virtually always for the fan to be running.

    The air temperature sensor they use for control is in the air handler, so if you have it set so the fan turns off, it can/will affect the temperature swing in the room, and the cycling of the unit.
    If more government is the answer, then it's a really stupid question.

  7. #7
    Quote Originally Posted by pacnw View Post
    which fan are you talking about, inside or outside?

    how do you know the compressor is off?
    The inside fan. I went out and checked the compressor. I didn't see any movement or feel any vibration.

  8. #8
    Thanks JimJ and Mark. Appreciate it.

    I will have to replace my main carrier SR 22 unit in the near future. It is 5 tons. Hopefully, I will downsize that a bit with a separate unit upstairs. Rough estimate on sq footage says maybe 3.5 tons although my ceilings are 10 ft instead of 8.
    Last edited by CallmeTexas; 05-22-2013 at 01:06 AM. Reason: Duplicate

  9. #9
    Join Date
    Jun 2010
    Posts
    27
    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread.

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    Last edited by jpsmith1cm; 07-12-2013 at 05:47 AM. Reason: non AOP Pro member

  10. #10
    Join Date
    Sep 2008
    Location
    Western PA
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    25,567
    peanut2004

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread.

    You can find the rules for posting and qualifications here.

    Additional infractions may result in loss of posting privileges.

  11. #11
    Join Date
    Jun 2010
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    27
    Quote Originally Posted by jpsmith1cm View Post
    peanut2004

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread.

    You can find the rules for posting and qualifications here.

    Additional infractions may result in loss of posting privileges.
    Done, Sorry and Thanks

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