As a air purifier, the AP151MBA1 shares its core mechanism with the rest of LG’s air purifier lineup. The most common service call on this unit is: new rattling or grinding noise from the fan assembly at higher speeds. LG’s own US product page flags this exact model discontinued (read 24 September 2026); it is out of production but not out of the field, and it is exactly the kind of model that has nowhere else to turn for support.
Service calls on this air purifier most often trace to one of a short list: new rattling or grinding noise from the fan assembly at higher speeds, fan running while the air-quality indicator stays fixed on one reading, or filter-change light staying lit after a genuine replacement filter is fitted. We confirm which one applies against the model and serial number before ordering a part.
Key Features
- Filter-change indicator light
- Multi-stage filtration ahead of the fan assembly
- Air purifier
Most Common Issues on This Model
New rattling or grinding noise from the fan assembly at higher speeds
Fan running while the air-quality indicator stays fixed on one reading
Filter-change light staying lit after a genuine replacement filter is fitted