中文
含义
F1 为智能功率模块（IPM）保护触发。IPM 是变频空调的核心驱动元件，内部集成了 IGBT 及保护电路。IPM 保护通常意味着严重的电控故障。
常见原因
- IPM 过流保护（压缩机启动电流过大或卡缸）
- IPM 过热（散热不良或风扇故障）
- IPM 内部短路
- 直流母线电压异常过高
- 压缩机启动电流过大导致 IPM 保护
自助排查
- 立即断电，不要反复尝试开机，避免故障扩大。
- 检查室外机散热是否良好，IPM 散热片是否有足够风量。
- 用万用表测量压缩机三相绕组阻值是否平衡，判断压缩机是否卡缸。
- IPM 保护通常需要专业设备检测，不建议用户自行检修。
- 联系海信售后服务中心，由专业人员检测变频驱动板及压缩机。
English
Meaning
Intelligent Power Module (IPM) protection triggered. The IPM is the core drive component of inverter air conditioners, integrating IGBTs and protection circuits. IPM protection usually indicates a serious fault.
Common Causes
- IPM overcurrent (compressor startup current too high or locked rotor)
- IPM overheating (poor heat dissipation or fan failure)
- IPM internal short circuit
- DC bus voltage surge abnormally high
- Compressor startup current excessive
Self-Check Steps
- Immediately power off; do not repeatedly try to restart to avoid worsening the fault.
- Check whether the outdoor unit has adequate ventilation and the IPM heatsink receives sufficient airflow.
- Use a multimeter to measure compressor three-phase winding balance and determine if the compressor is locked.
- IPM protection typically requires specialized equipment for diagnosis; do not attempt DIY repair.
- Contact Hisense after-sales service for professional inspection of the inverter drive board and compressor.