中文
含义
E3 为室内风机故障（风机锁死或转速异常）。室内风机电机或驱动电路异常导致风机不转或转速过低，影响换热效率。
常见原因
- 室内风机电机绕组短路或断路
- 风机启动电容损坏
- 风机轴承卡死
- 风机控制电路或驱动板故障
- 风机霍尔反馈信号异常
自助排查
- 断电后手动转动室内风机叶轮，检查是否卡死
- 检查风机插头是否连接牢固
- 用万用表测量风机电机绕组阻值
- 检查启动电容是否鼓包或漏液
- 如风机及电容正常，可能为控制板故障，联系售后
English
Meaning
Indoor fan fault (fan locked or abnormal speed). The indoor fan motor or drive circuit malfunction causes the fan to stop or run at low speed.
Common Causes
- Fan motor winding short or open circuit
- Fan start capacitor failed
- Fan bearing seized
- Fan control circuit or driver board fault
- Fan Hall feedback signal abnormal
Self-Check Steps
- Power off and manually rotate the indoor fan wheel to check for binding
- Check fan connector is securely plugged in
- Measure fan motor winding resistance with multimeter
- Check start capacitor for bulging or leakage
- If fan and capacitor are normal, control board may be faulty; contact service