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14
9. Trouble Shooting
Symptom
Possible Cause
Remedy
No LCD
display on the
front panel.
1. Battery isn’t connected.
1. Reconnect battery.
2. Battery defect.
2. Replace with the same type of
battery.
3. On/Off button is not
pressed.
3. Press the On/Off button again.
Alarm buzzer
beeps
continuously
when AC
supply is
normal.
1.Overload of the UPS.
Verify that the load matches the
UPS capability specified in the
specs.
2.Power cord is loose.
Reconnect the power cord
properly.
When power
failure,
back-up time is
shorten.
1. Overload of the UPS.
1. Remove some non-critical
load.
2. Battery voltage is too low.
2. Charge battery 6 hours or
more.
3. Battery defect due to high
temperature operation
environment, or improper
operation to battery.
3. Replace with the same type of
battery.
If any abnormal situations occur that are not listed above, please call NEXT
UPS Systems service people immediately.
