To change the displayed temperature from Fahrenheit to Celsius, or vice versa, perform these steps:

1. Power off your air conditioner and then unplug the AC unit from the wall plug for at least 30 seconds.
2. Reinsert the plug and press the Power button if the AC does not automatically power on
3. Set the AC to Cooling mode.
4. Set the temperature to 30 degrees Celsius or 86 degrees Fahrenheit.
5. Set the fan speed to Medium.
6. Press and release the SLEEP button on the remote 8 times.   This must be done within 8 seconds.
7. After 4 to 7 seconds the display should switch over.

If the mode does not change start over at step one and try again.   The entire process must be done within the first 3 minutes of powering on the AC unit.