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E1：压缩机高压保护。 ﹑冷凝 器前有障碍物 ﹑室外环境温度高于43度时开始制冷 ﹑控制回路异常 4﹑高压管压力过大使高压开关动作
E1: Compressor high pressure protection. When there are obstacles in front of the condenser, the outdoor ambient temperature is higher than 43 degrees, the refrigeration begins, the control circuit is abnormal 4, the pressure of the high-voltage tube is too high to make the high-voltage switch operate.
E2：蒸发器防冻结保护。室内风机不转或风口堵住 。室内环境温度低于18度 。管温感温头折断 。管温感温头插头没插好。控制回路异常 。
E2: Anti-freezing protection of evaporator. Indoor fan does not turn or tuyere is blocked. Indoor ambient temperature is below 18 degrees. The temperature sensor of the tube is broken. The plug of the tube temperature sensor is not plugged in properly. The control loop is abnormal.
E3：压缩机低压保护 。 冷媒不足。 膨胀阀半堵，电磁阀故障。 过滤器半堵。
E3: Compressor low pressure protection. Insufficient refrigerant. Expansion valve half blocked, solenoid valve failure. The filter is half blocked.
E4：压缩机排气温度过高保护。 系统堵塞。 压缩机老化。 外机散热不好。
E4: Compressor exhaust temperature protection. The system is blocked. Compressor aging. External heat dissipation is not good.
E5：过电流（低电压保护）。
E5: Overcurrent (low voltage protection).
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