LG CordZero R9Dust fullDust full — cause and how to fix it
Error code: Dust full
The R9 can falsely report a 'Dust Full' error if the internal airflow path is clogged or the pressure sensor is faulty.
How to fix CordZero R9 Dust full
- 1
Check the intake path under the brush for blockages and ensure the filter is completely dry and clean.
- 2
If it persists, the pressure sensor module may be defective; contact LG support at 1544-7777 or find a replacement sensor module online for roughly $30-40.
What this repair uses
LG CordZero R9 pressure sensor
Take it out, clean it, and seat it again before you replace it. If the error stays, this is the part to change.
Frequently asked questions
What does LG CordZero R9 Dust full mean?
The R9 can falsely report a 'Dust Full' error if the internal airflow path is clogged or the pressure sensor is faulty.
Is this a hard repair to do myself?
Most of the steps above take 20-40 minutes with basic tools like a screwdriver. If you'd rather not open the unit yourself, contact the official support line below instead.
What part do I need?
You'll need a LG CordZero R9 pressure sensor. Compatible aftermarket parts are widely available on AliExpress and typically cost $8-60 depending on the part.
How do I contact LG support?
LG has 400+ service centers across Korea. Book via the LG ThinQ app for door-to-door repair service without an appointment. Phone: 1544-7777
Official support
LG has 400+ service centers across Korea. Book via the LG ThinQ app for door-to-door repair service without an appointment.
Online support
Open support page →