5. Trouble Shooting
Symptom Possible Cause Remedy
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 at least 5
seconds.
3. Press and Hold power switch for
at least 5 seconds.
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.
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