Originally Posted by jondrew55
Glad you figured out the problem. Bad contactors can also end up with your compressor running with nothing else powered up. Since the subject is home AC, Iíd like to throw in another common cause of no cooling. If your AC wonít work, check the drain line to make sure itís not plugged up. If it gets blocked up, a float switch near the inside unit will shut the system down so the condensed water does not run into your home. Itís always a good idea to run a cup of white vinegar thru the lines once a month to keep the mold and fungus from building up. Tons of YouTubes on this i case you are not familiar with the components of your AC.
Thanks jondrew, this is good info. As I stated in my original post, the indoor unit was replaced the night before I left for the summer and I noticed the new emergency drain line had a weird looking contraption with a wire running to it and I asked myself what the heck that was, now I know.
Having basic knowledge of appliances etc can save you a bunch of money on unnecessary repair calls.
Thanks again for all the valuable info on this site.