Question about LG LSC091PMA Split System Air Conditioner

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Thermal shutdown I have had three servicemen work on my A/C. They say it just gets too hot and shuts off. That it is supposed to do that. Do you have any suggestions

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Its getting hot for a reason and its not suppose to do that. Sounds like they are saying the compressor is getting thermally hot and shutting down? hAVE YOU CLEAN THE CONDESNOR COIL ON THE OUTSIDE? yOU CAN TAKE A HAIR BRUSH AND GO UP AND DOWN ON THE COIL TO CLEAN IT AND USE A WATER HOSE TO WASH OUT THE DIRT. tHEN ON YOUR AIRHANDLER IN THE HOUSE CHECK YOUR EVAPARTOR COIL AND SEE IF IT DIRTY AND CLEAN IT WITH THE BRUSH AND GO UP AND DOWN ON THE COIL AND CLEAN IT YOU CAN USE A SQURT BOTTLE OF WATER TO CLEAN IT. nEXT CHECK YOUR BLOWER FAN THE SQUIRREL CAGE TO MAKE SURE ITS CLEAN. AND IF NOT CLEAN IT. iF THIS DOES NOT CURE IT THEN IT IS A PRESSURE PROBLEM WTH THE FREON.

Posted on Jul 04, 2010

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Posted on Jan 02, 2017

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It is either running hot or you have a virus or infection.

Sounds like it might be running hot. If it is running hot it shuts off to keep from damaging the motherboard.

If it is running hot it will boot up to windows and let you do things as long as it is cool, but when it gets hot it will shut off and not boot up again until it cools off. That's a sign that it is running hot.

Three things that will cause it to run hot.
1) Dust. Dust in the vents, inside the computer, clogging the fans and dust around the cpu and heatsink.
2) A fan that has stopped working.
3) The Thermal Paste around the CPU and Heatsink has dried up or is too thin to keep the unit cool.

To fix either of the three would require taking the laptop apart. However you could buy a can of compressed air and blow out the vents, but this just pushes the dust inside the computer, but it might work.

If it is not running hot then you have a virus or infection that is shutting it down. Download and install MalwareBytes and run a Quick Scan.
Go to www.google.com and in the search box type:"Download cnet Malwarebytes" (without the quotes). Download andinstall malwarebytes from the sites download.cnet/malwarebytes. When the site opens up click on the Green Download button on the left. Do not click the Red Download button, that's junk. When it finishes installing the Gui Interface will open up with an offer to Accept a Trial Version or Decline. CLICK DECLINE you want the totally free version. Run a QUICK SCAN. As it scans, if it finds infections the number will be in red. When it finishes scanning, click SHOW RESULTS. A notepad text document will open up showing you the results. You can close the text document and go back to the Gui Interface where you will click REMOVE SELECTED RESULTS. The objects will already be selected for you. When it finishes removing the objects click ok and it will sometimes reboot your machine.

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Have a Technics SAAX720 that shuts off fifteen minutes turning on power. Gets very hot quickly


Heat = power or FAULT, in your case I assume you have checked the vents are clear.
If its getting too hot the thermal shutdown will operate to protect the unit and the area around it. These things have the ability to cause fires as they have big power supplies inside, thats one of the reasons why they have thermal protection. Also exposure to heat damages equipment over time.

Maybe try this take it out give it lots of airspace, make sure the connections are all good and try it on low level, if it shuts down again you need to take it for repair. These items are very complicated and require specialist attention.


Hope this helps
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