Continuous alarm on 4000 watt pure sine inverter

Continuous alarm on 4,000 watt pure sine inverter

Model

BP Series Pure Sine Wave Inverter 24VDC 120VAC 4000W


Description

turned on the inverter and found the alarm going on continuously. the output seems to be normal and there are no alarm lights or codes displayed so nothing showing any kind of an error. other than of course the alarm continuously going off.

Analysis of the possibility of the cause

1. According to the indicator light and input and output voltage, it can be judged that the inverter itself is normal.

2. The buzzer beeps for a long time, which can be judged as a fault of the transistor Y1(SS8050) that controls the on and off of the buzzer, caused by continuous conduction.


Solutions and steps

replace the corresponding component N5, that is, the transistor Y1(SS8050)

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