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4. Trouble Shooting
Symptom Possible
Cause
Solution
1. Missing battery
1. Charge battery up to 8
hours
2. Battery defect
2. Replace with the same type
of battery
No LED display
on the front
panel.
3. Power switch is not
pressed
3. Press a power switch again
Alarm buzzer
beeps
continuously
when AC
supply is
normal.
Overload of the UPS
Verify that the load matches
the UPS capability specified in
the specs
1. Overload of the UPS
1. Remove some non critical
load
2. Battery voltage is too low 2. Charge battery 8 hours or
more
When power
failure, back-up
time is shorten.
3. Battery defect due to high
temperature operation
environment, or improper
operation to battery
3. Replace with the same type
of battery
1. Fuse is blown
1. Replace the same type of
fuse
Mains normal
but LED is
flashing.
2. Power cord is loose
2. Reconnect the power cord
properly
If any abnormal situations occur that are not listed above, please call service
people immediately.
