You need to calibrate the sensors correctly. At the very tip of the black end (the one away from the threads), there is a little plastic bump. If you have long enough fingernails, you canjust pop the little plastic top off. Otherwise, get some pliers or something, and pop it off. It might feel like you're gona break it, but you won't. After that comes off, there is a little screw/bolt thingy that you can turn to adjust the sensor.
Or, you can not bother with all of that, and make a "magic number", which is basically X amount of cycles that the system waits after the switch is tripped. It layman's terms, the swtich trips, and then so mnay cycles later, the compressor shuts off. That's the way I made mine, mostly because i was too lazy to calibrate the switch.
