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
- 导风板步进电机接线松动或脱落。
- 步进电机线圈烧损或短路。
- 导风板机械机构卡死。
- 内机控制板导风板驱动电路损坏。
自助排查
- 拔掉电源，手动尝试转动导风板，确认是否被卡住。
- 检查导风板上是否有异物阻磍运动，清理并再试。
- 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
- Blade fan (louver) step motor connector loose or disconnected.
- Step motor winding burnt or short-circuited.
- Blade mechanism physically jammed or stuck.
- Indoor unit PCB blade motor drive circuit failed.
Self-Check Steps
- Unplug the AC and manually try to move the louver blades to confirm they are not physically jammed.
- Inspect the louver mechanism for obstructions, clean it, and retry.
- If the error persists, contact a professional technician to replace the step motor.