L3 - 大金 空调

中文

含义

L3 为变频器过流保护。变频驱动电路电流超过额定值。

常见原因

1. 压缩机堵转或短路
2. 变频板 IPM 损坏
3. 直流母线异常

自助排查

1. 断电后检查压缩机绕组
2. 检查变频板
3. 联系大金售后

English

Meaning

Inverter overcurrent protection. Inverter drive circuit current exceeded rated value.

Common Causes

1. Compressor stall or short circuit
2. Inverter IPM damaged
3. DC bus abnormal

Self-Check Steps

1. Power off and check compressor windings
2. Check inverter board
3. Contact Daikin service