When the air conditioner is turned on again after a power failure, this function restores the previous settings.
Open the front panel.
Lift up both sides of the panel slightly.
Press the ON/OFF button and hold it for 6 seconds, then the unit will beep twice and the lamp will blink twice 4 times.
To re-enable the function, press the ON/OFF button and hold it for 6 seconds. The unit will beep twice and the lamp will blink 4 times.
The feature may be changed according to the type of model.
If you press and hold the ON/OFF button for 3 – 5 seconds, instead of 6 seconds, the unit will switch to the test operation. In the test operation, the unit blows out strong cooling air for 18 minutes and then returns to factory default settings.