What to Check First
- If the odor level still does not change after testing, the unit may need an inspection by a qualified service technician.
- 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.
- 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.
- 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.
- Inside the front filter case, on the upper right side.
- Bottom center on the rear side.
- Inside the front filter case.
- This guide was created for all models, so the images or content may be different from your product.
Why This Can Happen
Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.
Safety and Model-Specific Guidance
Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.
Frequently Asked Questions
What should I check first for Why doesn’t the odor level change even when the air purifier smells??
If the odor level still does not change after testing, the unit may need an inspection by a qualified service technician.
When should I stop troubleshooting and contact LG?
Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.
Does this guidance apply to every LG model?
Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.
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