E1 - 长虹 空调

中文

含义

长虹空调室内机检测到室温传感器异常，显示屏出现 E1 故障代码。E1 表示室内环境温度传感器电路故障，空调无法获取准确的室内温度读数，导致无法进行正常的制冷或制热温度调节。故障通常表现为空调频繁启停、温度设定与实际体感不符，或空调拒绝启动。

常见原因

1. 室温传感器（NTC 热敏电阻）自身老化、阻值漂移或内部断路/短路。
2. 室温传感器与室内机主板的连接插头松动、氧化或插针弯曲导致接触不良。
3. 传感器连接线缆被老鼠咬断或因长期震动导致内部铜芯断裂。
4. 室内机主板传感器信号检测电路元件损坏（如上拉电阻开路、ADC 通道故障）。
5. 室内机进风口过滤网严重积灰，传感器探头上覆盖灰尘，导致感温不准。
6. 传感器在极端潮湿或高温环境中长期运行，加速了热敏电阻的老化。

自助排查

1. 用遥控器关机后断开空调电源（拔掉插头或关掉空气开关），等待 3 分钟后重新通电开机，观察 E1 代码是否消失。偶发性干扰可能导致误报。
2. 打开室内机前面板，取出空气过滤网，用清水冲洗干净、晾干后装回。同时检查室温传感器（通常为室内机右侧进风口附近的一个黑色小探头）是否被灰尘覆盖，如有则用软布轻轻擦拭干净。
3. 观察室内机显示屏上 E1 是否闪烁——闪烁通常指向传感器连接不良，常亮则可能是传感器本身已损坏。
4. 检查空调在 E1 状态下能否启动制冷/制热：如果完全无法启动，传感器可能已开路或短路，必须更换。
5. 室温传感器故障不建议用户自行拆卸更换，请拨打长虹空调售后服务热线，由专业技师携带替换传感器上门检测并更换。更换后一般可立即恢复正常。

English

Meaning

The Changhong air conditioner indoor unit has detected a room temperature sensor abnormality, displaying the E1 error code. E1 indicates a room temperature sensor (ambient thermistor) circuit fault. The air conditioner cannot obtain an accurate indoor temperature reading and therefore cannot perform normal cooling or heating temperature regulation. The fault typically manifests as frequent cycling, discrepancy between set temperature and actual feel, or the unit refusing to start.

Common Causes

1. The room temperature sensor (NTC thermistor) has aged, drifted in resistance value, or has an internal open/short circuit.
2. The sensor connector to the indoor unit main board is loose, oxidized, or has bent pins causing poor contact.
3. The sensor’s connecting wire has been chewed through by rodents or has internal copper core breakage due to prolonged vibration.
4. Components in the indoor unit main board’s sensor signal detection circuit are damaged (e.g., pull-up resistor open, ADC channel failure).
5. The indoor unit intake filter is heavily clogged with dust, and the sensor probe is covered in dust, leading to inaccurate temperature sensing.
6. The sensor has been operating in extremely humid or high-temperature conditions for a prolonged period, accelerating thermistor aging.

Self-Check Steps

1. Turn off the AC with the remote, disconnect power (unplug or switch off the circuit breaker), wait 3 minutes, then reconnect power and turn on. Observe whether the E1 code clears — occasional interference can cause false triggers.
2. Open the indoor unit’s front panel, remove the air filter, rinse it clean with water, dry it thoroughly, and reinstall. Also check whether the room temperature sensor (usually a small black probe near the right side of the indoor unit intake) is covered in dust — if so, gently wipe it clean with a soft cloth.
3. Observe whether the E1 display on the indoor unit is flashing — flashing usually indicates a poor sensor connection, while a steady display likely means the sensor itself is damaged.
4. Check whether the AC can start cooling or heating in the E1 state: if it cannot start at all, the sensor may have an open or short circuit and must be replaced.
5. Room temperature sensor faults are not recommended for user DIY replacement. Call the Changhong air conditioner after-sales hotline for a professional technician to bring a replacement sensor and perform diagnosis and replacement on-site. Normal operation typically resumes immediately after replacement.