中文
含义
压缩机排气温度传感器故障。检测压缩机排气管温度的热敏电阻失效，可能导致压缩机排气高温保护失效或误报，严重时可能损坏压缩机。
常见原因
- 排气温度传感器开路或短路
- 传感器安装位置偏移，未接触排气管壁
- 排气管高温导致传感器特性老化或损坏
- 传感器线束耐热层破损短路
- 主板检测电路滤波电容漏电导致采样偏移
自助排查
- 断电后测量排气温度传感器阻值，常温下通常在50kΩ左右，高温时阻值下降
- 检查传感器探头是否紧贴排气管且固定良好
- 检查线束外皮有无高温熔融痕迹
- 更换同型号排气温度传感器
English
Meaning
Compressor discharge temperature sensor failure. The thermistor on the compressor discharge pipe has failed, potentially disabling or falsely triggering high-discharge-temperature protection, which may damage the compressor.
Common Causes
- Open or shorted discharge temperature sensor
- Sensor probe misaligned — not contacting the discharge pipe wall
- Sensor element degraded by prolonged exposure to discharge-pipe heat
- Sensor wire insulation melted or shorted by high pipe temperature
- Leaking filter capacitor on the main board’s sampling circuit causing reading drift
Self-Check Steps
- Power off and measure the discharge sensor resistance — typically ~50kΩ at room temperature, decreasing at higher temperatures
- Verify the sensor probe contacts the discharge pipe surface and is securely clamped
- Inspect the wiring for melted insulation near the pipe
- Replace with the exact discharge temperature sensor model specified for your unit