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4. Troubleshooting
If the UPS system does not operate correctly, please solve the problem by using the table
below.
Symptom
Possible cause
Remedy
No indication and alarm even
though the mains is normal.
The AC input power is not
connected well.
Check if input power cord
firmly connected to the
mains.
The AC input is connected
to the UPS output.
Plug AC input power cord
to AC input correctly.
The alarm is sounding twice
every second.
UPS is overload
Remove excess loads
from UPS output.
After repetitive overloads,
the UPS is locked in the
Bypass mode. Connected
devices are fed directly by
the mains.
Remove excess loads
from UPS output first.
Then, shut down the UPS
and restart it.
5. Storage and Maintenance
Operation
The UPS system contains no user-serviceable parts. If the battery service life (3~5 years
at 25°C ambient temperature) has been exceeded, the batteries must be replaced. In this
case, please contact your dealer.
Storage
Before storing, charge the UPS 5 hours. Store the UPS covered and upright in a cool, dry
location. During storage, recharge the battery in accordance with the following table:
Storage Temperature
Recharge Frequency
Charging Duration
-25°C -40°C
Every 3 months
1-2 hours
40°C -45°C
Every 2 months
1-2 hours
