PRODUCT UPDATE:
Update as of 26 AUG 2024
When the unit is plugged in, all lights will flash for a couple of seconds but will immediately turn off.
Then, the power button light will continue to flash, indicating that it is on standby mode.
If the fan speed levels are changed, the power button light will stay on and the fan speed lights become bright, depending on which level the fan is set.
Then, when the unit is set to sleep mode, all lights will be turned off, except for the sleep icon light, which will be dim.
When all functions are turned off, only the power icon light will be lit up, indicating that it is on standby mode until it is unplugged.
If the unit is set on sleep mode, only the sleep indicator icon will light up.
The rest are turned off.