Kenmore AC Model 25370156000 keeps shutting off and on by itself

If you have just installed this unit in your window for the season, you may want to wait a day or so, for everything in the unit to settle, and try again. You make have shaken it up a bit too much. If not.....sounds to me like it is kicking out on high head pressure. This happens when refrigerant gets too low, or there is air in the refrigerant system. There is nothing you can do to solve this problem, except take it to a repair shop. If I am correct what happens is you turn the unit on, and the fan and compressor start simultaneously, then after a few seconds (maybe up to a minute) the compressor kicks off, and the air gets warm, then the compressor kicks on for a few seconds, and we repeat. This is actually a safety mechanism for the compressor motor so it does not run without refrigerant. (That would destroy the pump.)