中文
含义
温度传感器故障。微波炉腔体内或排风口附近的温度传感器（热敏电阻）信号异常，可能导致微波炉无法进入或退出加热模式，或错误触发过热保护。
常见原因
- 温度传感器插头接触不良或插反
- 传感器在高温环境下老化，阻值漂移
- 传感器引线被夹断或绝缘破损
- 传感器安装位置偏移，未能准确感知腔体温度
- 主控板上传感器检测电路的分压电阻虚焊
自助排查
- 拔下传感器插头，检查插针有无氧化或变形
- 用万用表测量传感器在室温下的阻值（通常10-100kΩ）
- 可用吹风机加热传感器探头观察阻值是否相应变化（NTC负温度系数）
- 若阻值不变或异常，需更换温度传感器
English
Meaning
Temperature sensor fault. The thermistor inside the microwave cavity or near the exhaust vent has abnormal signal output. The microwave may be unable to enter or exit heating mode, or may falsely trigger overheat protection.
Common Causes
- Loose or reverse-connected temperature sensor connector
- Aged sensor with resistance drift from prolonged high-temperature exposure
- Pinched or damaged sensor lead wires
- Sensor mounting position shifted, not accurately sensing cavity temperature
- Cold solder joint on the voltage-divider resistor for the sensor circuit on the main board
Self-Check Steps
- Disconnect the sensor connector and check the pins for oxidation or deformation
- Measure sensor resistance at room temperature with a multimeter (typically 10-100kΩ)
- Apply heat to the sensor probe with a hair dryer and observe whether resistance decreases (NTC characteristic)
- If resistance does not change or is out of range, replace the temperature sensor