中文
含义
E4 为室内风机锁死保护。室内风机电机或驱动异常导致风机转速为零或过低。
常见原因
- 风机电机绕组损坏
- 风机启动电容失效
- 风机轴承卡死
- 风机驱动电路故障
自助排查
- 手动转动风机叶轮检查卡死
- 检查风机电容
- 测量电机绕组阻值
English
Meaning
Indoor fan lock protection. Fan motor or drive fault resulting in zero or extremely low fan speed.
Common Causes
- Fan motor winding damaged
- Fan start capacitor failed
- Fan bearing seized
- Fan drive circuit fault
Self-Check Steps
- Manually rotate fan wheel to check binding
- Check fan capacitor
- Measure motor winding resistance