LG PS-K450 Series Owner's Manual page 28

Confirming Items Before Reporting Defect
Symptom
Air outlet has
abnormal smell.
Sensor indicator
has problem.
28
Confirmation
Whether use at smoky, odor places or not?
Whether use at place with food odor or not?
Whether complete dry washable filter or not?
Dust sensor keeps high level always.
Odor sensor level goes up?
Procedures
Use at smoky, odor places may cause weaken air purifing
function.
Food odor may penetrate into filter, use after enough air
circulation.
Wet washable filter may cause odor, please use after
complete dry.
Clean dust sensor or filter.
LG air purifier is designed to detect polluted air, therefore
odor sensor may not react to food odors.
But odor removing filter will remove odor. Steam particle
from cooking or boiling water may cause odor sensor
level goes up.
Air Purifier