If you notice an odor from the air purifier but the odor level indicator
does not change, it may be due to certain substances the sensor cannot
detect.
Test the odor sensor to make sure it is working properly.
Important
- If the odor level still does not change after testing, the unit may need an inspection by a qualified service technician.
Why doesn’t the odor level change even when the odor sensor is working properly?
The human nose can detect hundreds of thousands of odors, but the odor
sensor only responds to specific gases like carbon monoxide, propane,
and ammonia.
As a result, the odor sensor may not detect certain substances that do
not react with oxygen, such as food odors, so the odor level on the
indicator may not change.
How can I check if the odor sensor is working properly?
- 1. Apply a small amount of perfume, vinegar, or air freshener to a tissue and hold it near the odor sensor.
- 2. If the odor level indicator on the control panel changes color, the sensor is working properly.
1. Wall‑mounted air purifier (Wall-Fit model)
Inside the front filter case, on the upper right side.
2. LG PuriCare™ AeroTower
Inside the rear filter case
3. Mont Blanc P model
Inside the rear filter case
4. Mont Blanc S model
Upper rear side
5. PuriCare 360 (Mont Blanc D)
Inside the rear filter case
6. PuriCare Mini (Mont Blanc M)
Bottom center on the rear side
7. LG SIGNATURE
Inside the rear filter tray
8. Objet Collection (gas/humidity sensor, dust sensor)
Upper left on the rear side
9. Mont Blanc B model
Inside the front filter case
Frequently Asked Questions (FAQ)
- Q. Can I clean the odor sensor?
- A. Gently wipe the sensor surface with a slightly damp cotton swab.
- Q. The odor level changes too frequently.
- A. The sensor is highly sensitive and may react to changes in surrounding gas levels, perfumes, or air fresheners.
This guide was created for all models, so the images or content may be different from your product.
