Question about LG LS-K2430HL Heat Cool Mini Split Air Conditioner

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Compressor keeps shutting off after 30mins or so

Hi, I have a LG split A/C and whenever the temperature is above 40 celcius i've noticed that the compressor keeps turning off after every 30 mins or so and then comes back ON after sometime. The indoor unit shows that the compressor is ON but the air coming is not cold at all. I have also noticed that this happens more during the day than at night.
I have already got it checked and even the capacitor had been changed but still the problem persists. Please help me cause i really don't know what to do?

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  • abhishek_ban May 19, 2009

    Hi, thanks for your reply. but i have another A/c by Haier also Split and it works fine in the same temperature so how could this LG A/C be getting overheated? Is the compressor faulty??

  • abhishek_ban May 20, 2009

    Hi, just to follow up yesterday the temperature dropped a bit to around 30-35 celcius and the AC was working fine and kept cooling without giving any trouble. But couple of days before that when the ambient temp was between 40-45 celcius i faced the problem which i mentioned above. Does this not show that the AC compressor is overheating when the ambient temperature is higher than 40?



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The system may be going into cool down mode or thermal over load if the temperature is 104 degrees fahrenheit or above since the compressor will shut down if the internal temperature reaches 165 degrees.This could also be from low oil in the compressor.

Posted on May 19, 2009

  • Randy Hough
    Randy Hough May 19, 2009

    Thermal overload is due to the internal temperature as has nothing to do with outside temperature,There are multiple causes for this to occur.

  • Randy Hough
    Randy Hough May 20, 2009

    That is exactly what I would expect,If the internal temperature on the compressor is near thermal overload,The higher the ambient temperature,The faster it will over heat and the lower the ambient temperature the longer it takes.If the ambient is low enough to dissipate the heat effectively,the unit can operate perfectly. You can help with the heat dissipation by making sure the coils and filter are clean, the return vents are free from obstruction, the unit is properly charged with oil and refrigerant,and there is nothing close to the outside unit that would limit air flow(the unit should have at least 2 feet of free space around at least 3 sides for proper air flow)



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