HHome Appliance Help
Home › Appliance Help › [LG Air Conditioner Air Purification] Air purification function is failed

[LG Air Conditioner Air Purification] Air purification function is

In case of the product with the air purification function added to it, if the filter cover is not assembled properly, the quick buzzer sounds will be heard 7 times, thus failing operation of the air purification function. Assemble the filter cover accurately one more time.

Product images are temporarily unavailable. Check LG USA for the latest official images.
TroubleshootingAir Conditioners

What to Check First

  1. If you hear the quick buzzer sounds 7 times, it means that the filter cover is not assembled properly.
  2. Air purification function is not installed.
  3. ➔ Check the filter cover assembly status.
  4. In case of the product with the air purification function added to it, if the filter cover is not assembled properly, the quick buzzer sounds will be heard 7 times, thus failing operation of the air purification function. Assemble the filter cover accurately one more time.
  5. ➔ The air purification function for the ceiling mounted type air conditioner is an optional function that can be additionally purchased when you purchase the product for the first time.
  6. Wireless or wired remote controller is manufactured for the common use among different products, thus even if there is the air purification button, it might not work depending on the model. If the air purification option is not added, then even if you activate the function, it will have no effect of air purification.
  7. ※ Air purification function is mounted as default option for those models named LRD-N***CA or those whose names end with E, so if you want to additionally mount the air purification filter option on other models, then you must submit a request to the ceiling mounted type air conditioner shop or installation store.
  8. 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 [LG Air Conditioner Air Purification] Air purification function is failed?

If you hear the quick buzzer sounds 7 times, it means that the filter cover is not assembled properly.

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.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

Buying Guides for This Product Type

Efficiency & running costAir Conditioner Efficiency, Energy & Running-Cost GuideHousehold use caseAir Conditioner Family & High-Use Household GuideFeatures & valueAir Conditioner Features Worth Paying For — Value GuideFit & installationAir Conditioner Fit, Installation & Delivery Planning

Related Help Articles

Repair[LG Air Conditioner Cleaning] If the filter is covered with dusts, is cooling performance degraded?Troubleshooting[LG AC Filter] [Window/Potable] How do I clean and replace the filter?Repair[LG Air Conditioner Cleaning] [All-in-One] How can I clean the inside of the air conditioner?

Read the Official LG Guide