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Q : How to check for REC Soft Start Fail and Battery Wiring Error in the HT3310-40K UPS alarms
A: 1.Check the components on the SCR and PFC boards.
2.Check if there is any change in the BUS voltage.
3.Check the actual voltage of the battery. If the voltage is fine, then check the battery detection circuit.(Battery sampling resistor on the input board)
4.Replace the control board
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