中文
含义
过电流保护故障。压缩机运行电流超过额定值，系统触发保护停机。可能表明电源电压异常、压缩机负载过重或制冷系统故障。
常见原因
- 电源电压过低或过高超出压缩机正常工作范围
- 压缩机电容容量下降导致启动电流过大
- 压缩机内部机械卡缸或绕组短路
- 制冷系统高压侧堵塞或制冷剂过量导致负载增大
- 过流检测电路CT互感器或采样电阻漂移
自助排查
- 用万用表测量电源电压是否在额定电压±10%范围内
- 检查压缩机启动/运行电容是否鼓包或标称容量下降
- 检查室外机周围散热环境，排除散热不良导致的电流升高
- 如上述正常，可能压缩机本身故障，需专业人员检测
English
Meaning
Overcurrent protection fault. The compressor running current exceeds its rated value, triggering protective shutdown. This may indicate abnormal supply voltage, excessive compressor load, or refrigeration system issues.
Common Causes
- Supply voltage too low or too high, outside the compressor’s normal operating range
- Degraded compressor capacitor causing excessive starting current draw
- Mechanically seized compressor or shorted winding inside the compressor motor
- Blocked high-pressure side or overcharged refrigerant increasing compressor workload
- Drifted current transformer (CT) or sampling resistor in the overcurrent detection circuit
Self-Check Steps
- Measure the supply voltage — it should be within ±10% of the rated voltage
- Check the compressor start/run capacitor for bulging or reduced capacitance
- Ensure the outdoor unit has adequate ventilation and clean condenser coils
- If all above check out, a compressor fault is likely — professional service required