F2 - hisense Air Conditioner

中文

含义

F2 为功率因数校正（PFC）电路故障。PFC 电路用于改善变频空调输入电流波形、提高功率因数。PFC 故障会导致驱动板工作异常。

常见原因

1. PFC 电路中 IGBT 或 MOSFET 损坏
2. PFC 电感磁芯饱和
3. 直流母线电容容量下降
4. PFC 控制 IC 故障
5. 输入电网电压跌落

自助排查

1. 检查空调电源插头是否接触良好，输入电压是否正常。
2. 查看电源线是否破损，配电箱中对应空气开关是否正常。
3. 如家中电压经常不稳，建议加装稳压器。
4. PFC 电路故障涉及高压部分，非专业人士禁止自行维修。
5. 联系海信售后更换变频驱动板。

English

Meaning

Power Factor Correction (PFC) circuit fault. The PFC circuit improves the input current waveform and power factor. A PFC fault causes abnormal drive board operation.

Common Causes

1. PFC IGBT or MOSFET failure
2. PFC inductor core saturation
3. DC bus capacitor degraded
4. PFC control IC fault
5. Input power grid voltage sag

Self-Check Steps

1. Check whether the AC power plug is making good contact and the input voltage is normal.
2. Inspect the power cord for damage and the corresponding circuit breaker in the distribution panel.
3. If the household voltage is frequently unstable, consider installing a voltage stabilizer.
4. PFC circuit faults involve high voltage; do not attempt DIY repair.
5. Contact Hisense service to replace the inverter drive board.