PowerWalker VFI 1000 LE - Manual (Page 30)

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Note 1: when the UPS failed, the red Fault/Warning LED will be lightened
constantly, and the buzzer will beep continuously.
Note 2: When the UPS is fault, it will stop the power conversion of mains or
battery, the original Load/Battery level LED will code the fault cause.
Note 3: If the fault can’t be shoot, please contact the distributor or service
center.
(3) Trouble shooting in else cases.
Problem Possible cause Action
Battery discharging
time diminishes
Battery not yet been fully
charged.
Keep UPS connected to
utility power persistently for
more than 10 hours to
recharge the batteries.
UPS overloaded.
Check the loads and
remove some non-critical
loads.
Battery aged. Replace the batteries.
Charger failed
Check the charger. Contact
the distributor or service
center.
The UPS cannot
power on after
pressing the button
The button is pressed too
briefly.
Press the button
continuously for more than
2 seconds.
Battery is not connected or
battery voltage is too low, or
Charger failed.
Check the charger and
battery.
UPS fault.
Contact the distributor or
service center.