中文
含义
气体泄漏检测——与H26类似但针对不同的传感器位置或检测机制。系统通过压力或温度参数的变化率判断存在制冷剂泄漏风险，并发出预警。
常见原因
- 室内机或室外机管路接头处的O型密封圈老化
- 截止阀阀杆密封处渗漏
- 连接铜管在包扎保温层内有极微小的裂缝
- 制冷系统存在缓慢泄漏，日泄漏率约几克
- 维修后充注口阀芯密封不严
自助排查
- 用电子检漏仪重点检查室内机管路接头和室外机截止阀
- 观察空调运行一段时间后的制冷效果是否逐渐变差
- 测量压缩机运行电流是否随使用时间逐渐下降（表示制冷剂逐渐流失）
- 确认泄漏后需专业人员进行保压检漏、修复并重新充注制冷剂
English
Meaning
Gas leakage detection — similar to H26 but for a different sensor location or detection mechanism. The system assesses the rate of change in pressure or temperature parameters to determine refrigerant leakage risk and issues a warning.
Common Causes
- Aged O-ring seal at indoor or outdoor unit pipe joints
- Valve stem seal leak on the service valve
- Microscopic crack in the copper pipe concealed under the insulation wrap
- Slow refrigerant leak with a daily loss rate of several grams
- Loose valve core seal at the service port after maintenance
Self-Check Steps
- Use an electronic leak detector to inspect indoor pipe joints and the outdoor service valves
- Observe whether cooling performance gradually degrades over time during operation
- Measure compressor operating current — a gradual decline over weeks suggests progressive refrigerant loss
- If a leak is confirmed, have a professional pressure-test the system, repair the leak, and recharge the refrigerant