中文
含义
过电流/过负荷保护。压缩机运行电流持续超过额定值的保护阈值，系统判定压缩机处于过负荷状态并停机保护。
常见原因
- 空调在超出运行温度范围的高温环境下长时间满负荷运行
- 室外机安装位置通风不良或阳光直射严重
- 系统内制冷剂充注量过多，压缩机负荷增大
- 蒸发器或冷凝器严重脏堵，换热效率降低
- 压缩机冷冻油不足，内部摩擦增大
自助排查
- 检查室外机安装位置——确保四周有足够的通风空间
- 清洗室外机冷凝器和室内机滤网
- 检查制冷系统的高低压值，判断制冷剂是否过多
- 若频繁出现过载保护，需专业检测压缩机运行电流和工作状态
English
Meaning
Overcurrent/overload protection. The compressor operating current has continuously exceeded the rated protection threshold. The system determines the compressor is overloaded and stops for protection.
Common Causes
- Prolonged full-load operation in ambient temperatures exceeding the unit’s rated operating range
- Poor outdoor unit ventilation or direct sunlight exposure
- Excessive refrigerant charge in the system increasing compressor load
- Heavily fouled evaporator or condenser coils reducing heat exchange efficiency
- Insufficient compressor oil causing increased internal friction
Self-Check Steps
- Check outdoor unit placement — ensure adequate clearance on all sides for airflow
- Clean the outdoor condenser coils and indoor unit air filter
- Check system high and low side pressures to evaluate refrigerant charge level
- If overload protection occurs frequently, have a technician measure compressor operating current and assess running condition