中文
含义
压缩机相电流过流保护。F1 表示变频驱动系统检测到压缩机任意一相或多相运行电流超过设定的过流保护阈值。持续过流可能导致压缩机绕组过热烧毁或 IPM 模块损坏。
常见原因
- 压缩机电机绕组匝间短路或对地绝缘下降，运行电流异常增大。
- 系统制冷剂充注过量，压缩机负载过大导致电流升高。
- 系统管路堵塞（如毛细管堵或过滤器堵），压缩机排气压力异常升高。
- 压缩机机械卡滞（轴承磨损、阀片损坏），转子转动阻力大。
- 电源电压异常（过高或过低）导致压缩机电流异常。
- IPM 电流采样电路故障（采样电阻或运放电路），误报过流。
自助排查
- 完全断电 5 分钟后重新上电，观察 F1 是否消除。若偶发出现，可能为电网波动导致。
- 用钳形电流表测量压缩机运行时各相电流——正常运行时各相电流应平衡且在额定范围内。
- 测量压缩机绕组间电阻和绕组对地绝缘电阻——三相绕组阻值应基本平衡，对地绝缘应>10MΩ。
- 检查室外机冷凝器是否脏堵影响散热。
- 压缩机过流排查和维修需要专业工具（制冷压力表、钳形表、兆欧表），联系 TCL 售后由专业技师进行系统诊断。
English
Meaning
Compressor phase overcurrent protection. F1 indicates the variable-frequency drive system has detected that any one or more compressor phase currents exceed the set overcurrent protection threshold. Sustained overcurrent may cause compressor winding burnout or IPM module damage.
Common Causes
- Compressor motor winding inter-turn short circuit or degraded insulation-to-ground, causing abnormally increased running current.
- Excessive system refrigerant charge, overloading the compressor and raising current.
- System pipe blockage (e.g., capillary tube blockage or filter blockage), causing abnormally high compressor discharge pressure.
- Compressor mechanical binding (bearing wear, valve plate damage), causing high rotor rotational resistance.
- Abnormal supply voltage (too high or too low) causing abnormal compressor current.
- IPM current sampling circuit fault (sampling resistor or op-amp circuit), falsely reporting overcurrent.
Self-Check Steps
- Power off completely for 5 minutes, then reconnect power and check if F1 clears. If it occurs occasionally, grid voltage fluctuation may be the cause.
- Use a clamp meter to measure each phase current during compressor operation — the currents should be balanced across phases and within rated range.
- Measure compressor winding resistance between phases and insulation resistance to ground — phase-to-phase resistances should be roughly balanced; insulation to ground should be >10MΩ.
- Check whether the outdoor condenser is dirty or clogged, affecting heat dissipation.
- Compressor overcurrent diagnostics and repair require professional tools (refrigeration manifold gauge, clamp meter, megohmmeter). Contact TCL after-sales for a professional technician to perform system diagnostics.