An LG PuriCare purifier moves room air through a filter stack – typically a washable pre-filter ahead of a HEPA or combination filter – and adds an air-quality sensor that adjusts fan speed automatically along with, on some models, Wi-Fi control through an app. With few moving parts, the fan motor, the control board and the sensor are essentially the whole list of things that can fail.
We start with filter fit, the model-specific reset procedure and sensor cleaning, since those account for most of the complaints we see, and only move to testing the fan motor and control board once those have been ruled out. Where a repair would cost close to what a similar unit sells for new, we say so before any parts are ordered.
Common Air Purifiers Problems
Filter indicator staying on after a new filter has been fitted
Unit not turning on at all
Noticeably weaker airflow on every fan speed
Grinding, rattling or squealing fan noise
Air-quality indicator stuck on one reading regardless of the room
Wi-Fi or app connection not responding
Popular LG Air Purifiers Models
LG AS401VSA0
Model # AS401VSA0
LG AS401WWA1
Model # AS401WWA1
LG UD701KOG3
Model # UD701KOG3
LG AP151MBA1
Model # AP151MBA1
LG AS301GG10
Model # AS301GG10
LG AS330DWR0
Model # AS330DWR0
Why Trust Us With Your LG Air Purifiers
- Trained on LG air purifiers control systems and diagnostics.
- Genuine OEM parts stocked for the most common failures.
- Upfront flat-rate pricing, approved by you before we start.
- 30-day workmanship warranty on every repair. Parts may carry the manufacturer's warranty where applicable.

