中文
含义
颗粒物传感器故障。净化器显示PM2.5数值异常(持续为0、显示”---“或数值剧烈跳动无规律)。
常见原因
- 颗粒物传感器进风口被灰尘堵塞导致光路受阻
- 传感器内部激光二极管老化或损坏
- 传感器风扇(如有)停转导致气流无法进入检测腔
- 传感器排线松动或插头氧化接触不良
- 高湿度环境导致传感器内部结露影响光学测量
自助排查
- 使用软毛刷或压缩空气清洁颗粒物传感器进出风口
- 将净化器置于清洁环境中运行30分钟,观察数值是否恢复
- 检查传感器模块连接排线是否插紧
- 在干燥环境中运行——相对湿度超过85%时传感器可能暂时异常
- 若清洁后仍无读数,需更换颗粒物传感器模块
English
Meaning
Particle sensor failure. The purifier displays abnormal PM2.5 readings — stuck at zero, showing ”---”, or fluctuating wildly without correlation to actual air quality.
Common Causes
- Dust-clogged intake of the particle sensor obstructing the laser optical path
- Aging or failed laser diode inside the sensor module
- Internal sensor fan (if present) stopped, preventing airflow through the detection chamber
- Loose or oxidized sensor ribbon cable connector
- Condensation inside the sensor due to high humidity affecting optical measurements
Self-Check Steps
- Clean the particle sensor’s inlet and outlet openings using a soft brush or compressed air
- Run the purifier in a clean environment for 30 minutes and observe if readings stabilize
- Check that the sensor module connector is fully seated on the main board
- Operate in a drier environment — relative humidity above 85% can cause temporary sensor anomalies
- If cleaning does not restore readings, replace the particle sensor module