中文
含义
压缩机排气温度过高保护。排气管温度超过保护阈值（通常115-125℃），系统停机冷却。反复出现可能造成压缩机冷冻油劣化甚至压缩机损坏。
常见原因
- 制冷系统缺氟或泄漏，导致回气冷却不足
- 膨胀阀堵塞或开度过小，制冷剂流量不足
- 室内/室外风机转速异常导致换热不良
- 冷凝器翅片严重脏堵
- 压缩机回气管路堵塞或过滤器脏堵
自助排查
- 检查室内外风机是否正常运行，风量是否充足
- 清洁冷凝器翅片和室内机滤网
- 检查管路有无明显油渍（泄漏痕迹）
- 如频繁报此故障，需专业人员检测系统压力、补充制冷剂
English
Meaning
Compressor discharge temperature too high. The discharge pipe temperature has exceeded the protection threshold (typically 115-125°C), forcing system shutdown. Repeated occurrences can degrade compressor oil and potentially damage the compressor.
Common Causes
- Refrigerant undercharge or leak, reducing suction gas cooling effect
- Clogged expansion valve or insufficient valve opening, restricting refrigerant flow
- Abnormal indoor/outdoor fan speed reducing heat exchange efficiency
- Severely blocked condenser coil fins
- Restricted compressor suction line or clogged filter drier
Self-Check Steps
- Verify both indoor and outdoor fans are running at proper speed with adequate airflow
- Clean the condenser fins and indoor unit air filter
- Inspect refrigerant lines for visible oil stains indicating leaks
- If the fault recurs frequently, a professional must check system pressures and top up refrigerant