CH04 - lg Air Conditioner

中文

含义

CH04 表示外机管温传感器故障，传感器读数异常或传感器开路/短路。

常见原因

1. 外机管温传感器接线束脱落或松动。
2. 传感器元件老化导致开路或短路。
3. 传感器线被小动物或环境因素损坏。
4. 主控制板传感器接口电路损坏。

自助排查

1. 拔掉空调电源，等待5分钟后重新启动。
2. 检查外机管温传感器接线束是否嵌紧。
3. 如仍报错，需联系专业人员检查更换传感器或控制板。

English

Meaning

CH04 indicates a fault in the outdoor unit coil pipe temperature sensor. The sensor reading is out of range or the sensor is open/short-circuited.

Common Causes

1. Outdoor coil pipe temperature sensor harness disconnected or loose.
2. Sensor element open-circuit or short-circuit due to aging.
3. Sensor wire damaged by animals or environmental factors.
4. Main PCB sensor input circuit failed.

Self-Check Steps

1. Turn off the AC power, wait 5 minutes, and restart.
2. Inspect the outdoor coil pipe temperature sensor connector to ensure it is securely attached.
3. If the error persists, contact a professional technician to replace the sensor or control board.