I just bought a Haeir in wall unit airconditioner, and it works good, but when the compressor shuts off, the fan continues to run and won't stop. I can't figure out how to set it to turn off and on at the temperature I want. I've tried several things, but none of them seem to work. Anyone having the same problems or know about this?

Read your owners manual OR post the owners manual here so we can all see what it says. Fan control is in the manual.