中文
含义
E1表示空调室内环温传感器（室温NTC热敏电阻）出现开路、短路或读数异常。该传感器安装在室内机进风口处，用于检测室内环境温度，是空调温度控制的基础参数。
常见原因
- 传感器引线断裂或插头松动脱落。
- 传感器NTC热敏电阻老化，阻值漂移超出允许范围。
- 传感器表面被灰尘覆盖，影响感温精度。
- 传感器连接线束被老鼠咬断或磨损。
- 主控板上温度检测电路元件损坏。
自助排查
- 关闭空调电源，拔掉插头等待5分钟后重新上电，观察故障是否消除。
- 打开室内机面板（挂机掀开面板，柜机拆下进风格栅），找到室温传感器（通常位于进风口附近）。
- 检查传感器插头是否插紧，重新插拔。
- 用万用表测量传感器阻值（25℃约5-15kΩ），与标准值对比。
- 若传感器损坏，需更换同规格NTC传感器，联系售后处理。
English
Meaning
E1 indicates an indoor ambient temperature sensor (room NTC thermistor) fault — open circuit, short circuit, or abnormal reading. This sensor is mounted at the indoor unit air intake and detects the room temperature, forming the basis for the A/C temperature control system.
Common Causes
- The sensor lead wire is broken or the connector is loose/disconnected.
- The NTC thermistor has aged and its resistance has drifted outside the acceptable range.
- The sensor surface is covered with dust, affecting temperature sensing accuracy.
- The sensor wiring harness has been chewed by rodents or worn through.
- The temperature detection circuit on the main control board is damaged.
Self-Check Steps
- Turn off the A/C power, unplug it for 5 minutes, then restart and check if the code clears.
- Open the indoor unit panel (lift the panel for wall units, remove the intake grille for floor units) and locate the room temperature sensor (usually near the air intake).
- Check that the sensor connector is firmly seated — reseat it.
- Use a multimeter to measure the sensor resistance (25°C: about 5-15kΩ) and compare with the standard value.
- If the sensor is faulty, replace it with a matching NTC sensor — contact service.