CH18 - lg Air Conditioner

中文

含义

CH18 表示内机导风板（横摆/竖摋）电机故障，风向控制机构无法正常工作。

常见原因

1. 导风板步进电机接线松动或脱落。
2. 步进电机线圈烧损或短路。
3. 导风板机械机构卡死。
4. 内机控制板导风板驱动电路损坏。

自助排查

1. 拔掉电源，手动尝试转动导风板，确认是否被卡住。
2. 检查导风板上是否有异物阻磍运动，清理并再试。
3. 如仍报错，需联系专业人员检查更换步进电机。

English

Meaning

CH18 indicates a fault in the vertical or horizontal blade fan (louver) motor. The air direction control mechanism is not functioning.

Common Causes

1. Blade fan (louver) step motor connector loose or disconnected.
2. Step motor winding burnt or short-circuited.
3. Blade mechanism physically jammed or stuck.
4. Indoor unit PCB blade motor drive circuit failed.

Self-Check Steps

1. Unplug the AC and manually try to move the louver blades to confirm they are not physically jammed.
2. Inspect the louver mechanism for obstructions, clean it, and retry.
3. If the error persists, contact a professional technician to replace the step motor.