LG U9CV2B Owners Manual - Page 36
Troubleshooting
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TROUBLESHOOTING EN Before Calling for Service Please check the following before you contact the service center. If the problem persists, contact your local service center. Symptom Cause Remedy It does not operate at all. Is the power cord unplugged from the outlet? •• Insert it into the socket correctly. The amount of wind is small and there is a noise. Did dust accumulate in the •• Clean the ultra fine filter ultra fine filter? thoroughly. Did dust accumulate in the True HEPA filter? •• Replace the filter. Is the indoor pollution severe? •• Ventilate the indoors before using the product. Did dust accumulate in the •• Clean the ultra fine filter ultra fine filter? thoroughly. The air inside is not purified well enough. Did dust accumulate in the True HEPA filter? Are you using it in a place that is too spacious or too open? •• Replace the filter. •• Use a product that suits the size of the room. •• Avoid well-ventilated places such as doors, windows, etc. Is there any obstacle nearby? •• Remove the obstacle. Is the product installed at a corner? •• Move the product and install it again. The overall air quality color is still in red. The buttons on the control panel do not work. Does the color not change even if it is moved to a clean room? Did you use a spray near the product? •• Remove the power cord from the outlet and reconnect after 1 minute. •• Do not use a spray near the product. Is displayed on the status display? •• To unlock, press the Mode button on the control panel for 3 seconds. 36