海尔变频空调因型号不同,E1的含义也不一样,因氟压力过低则显示E1，多数是内机环境温度传感器,也有可能是模块，
以下代码适用于海尔KFR-48LW/BPJXF、KFR-48LW/BPF、KFR-50LW/BPJXF、KFR-51LW/BPJXF、KFR-51LW/BPJF、KFR-51LW/NBPF、KFR-51LW/TBPJXF、KFR-51LW/BPJXF、KFR-52LW/BPJXF、KFR-52LW/BPJF、KFR-52LW/EBPJXF、KFR-52LW/NBPJXF、KFR-58LW/TBPJXF、KFR-58LW/BPF、KFR-58LW/BPJXF、KFR-60LW/BPJXF、KFR-58LW/BPJXF、KFR-58LW/EBPJXF、KFR-58LW/NBPJXF、KFR-58LW/NBPF、KFR-60LW/BPJF、KFR-60LW/BPXF、KFR-60LW/EBPJXF、KFR-68LW/BPJXF、KFR-68LW/EBPJXF、KFR-68LW/BPJXF等空调。
故障代码     故障原因
E1          功率模块过热、过流、短路
E2          电流传感器感应电流太小
E4          制热时压机温度传感器温度超过120℃
E5          过电流保护
E6          室外温度传感器故障
E7          室外盘管传感器故障
Ea          电源超欠压
Ec          制冷时室外热交传感器温度超过70℃保护
Ee          单片机读入EEPROM数据有错误
F1          室温传感器故障
F2          室内盘管传感器故障
F4          制热时室内盘管传感器超过72℃保护
F5          制冷时室内盘管温度传感器低于0℃以下保护
F7          室内主板与控制面板通讯故障