LG PH-U451WN User Guide

*  The user cannot set to the specific level of humidity the user wants. 

When the humidifier operates, the mist may not be visible as it is humidified in fine particles.

* The fan speed can be set in 3 levels for the humidifier function. 

•  If the water tank is empty, the no water lamp will be turned on and the buzzer will go off, 

but the operation will not stop. 

•  If the no water lamp is turned on during the operation, always turn off the power, separate 

the water tank, fill up the water tank and then assemble the water again for operation. 

•  Depending on the size and condition of the room where the air purifier is installed, the 

humidity may not be controlled at the appropriate level and kept higher. 
Humidity level is not appropriate - Operate at higher fan speed.
Humidity level is higher than appropriate - Turn off the humidifier operation.

Room temperature

Appropriate humidity level

~18°C

65%

18°C~24°C

60%

24°C~

55%