300W Inverter direct alarm and fault light on at power on

Model

BP series pure sine wave inverter 300W 48VDC 220VAC

Description

Alarm directly when starting, the fault light is on, and the buzzer sounds.

Analysis of the possibility of the cause

Checking the circuit board, it was found that the problem was caused by the rectifier bridge in the rear, and the fast recovery diode 1660CTA of the half bridge was damaged.

Solutions and steps

Replace the fast recovery diode.

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