1. Press the ON/OFF button. The unit will start automatically: For cooling only model: AC-10100E R.T. (room temperature) ≥ 75oF → the unit will work in cooling mode R.T. < 75oF → the unit will work in fan mode For cooling & heating model: AC-10100H R.T. (room temperature) ≥ 75oF → the unit will work in cooling mode 68 oF ≤ R.T. < 75oF → the unit will work in fan mode R.T.
