Four years ago this happened. Took it to the store where I bought it. They said it was a bad thermostat and I had them fix it. ( Ithink it cost about $225 with tax.). This time, I got on YouTube to search for the cure. Watched a video that showed how to test the thermostat by unhooking the electrical leads, insert a jumper, and then plug it back in. When I did this the compressor started up and cooled quickly. From this, I knew it was a failed thermostat. After an Internet search I found you website with a fair price, quick delivery and a good reputation. Got the part in a couple of days.
I unplugged the power, removed the front bottom grill, and unscrewed the thermostat. I then removed the back cover for access to the sensor coil. Next, I unscrewed the cooling panel inside, pulled it out a couple of inches and removed the old sensor. One thing that I did that was not on the YouTube video was to tie a heavy string to the old sensor. That way when I "snaked out" the old sensor wire and the thermostat it left me a "pull cord" to make it easier to guide the new sensor underneath and through the unit to the back for installing. The entire operation took less than thirty minutes.
The unit is now running and the temperature has dropped 13 degrees F in about 30 minutes. Problem solved. I only hope that it lasts more than the four years that the one installed in 2012 did. Thanks for the good service.
Weldon Johnson