E8 - aux Air Conditioner

中文

含义

E8 为 IPM 功率模块保护。智能功率模块检测到过流、过热或短路等异常时触发保护。

常见原因

1. 压缩机负载过大或堵转
2. IPM 模块散热不良
3. 直流母线电压异常
4. IPM 模块本身损坏
5. 变频控制板驱动信号异常

自助排查

1. 断电后等待 10 分钟让 IPM 冷却
2. 检查压缩机绕组阻值是否正常，排除压缩机短路
3. 检查 IPM 模块散热片是否清洁
4. 测量直流母线电压是否正常
5. 如 IPM 模块损坏，需专业人员更换，联系售后

English

Meaning

IPM (Intelligent Power Module) protection triggered by overcurrent, overheat, or short circuit.

Common Causes

1. Compressor overload or stall
2. IPM module poor heat dissipation
3. DC bus voltage abnormal
4. IPM module damaged
5. Inverter board drive signal abnormal

Self-Check Steps

1. Power off and wait 10 minutes for IPM to cool
2. Check compressor winding resistance to rule out short circuit
3. Check IPM heat sink is clean
4. Measure DC bus voltage
5. If IPM module damaged, contact AUX service for replacement