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9.3. Trouble Shooting In Else Cases
Problem
Possible cause
Remedy
No indication, no warning tone
even though system is connected
to mains power supply
No input voltage
Check the building wiring and
input cable. Check if the input
breaker is closed
BYPASS LED light up even though
the power supply is available
Inverter not
switched on
Press button to turn on
UPS.
BATTERY LED lights up, and
audible alarm sounding every 1
beep in every 4 seconds
Input voltage
and/or frequency
are out of
tolerance
Check input power source.
Check the building wiring and
input cable. Check if the input
breaker is closed.
Emergency supply period shorter
than nominal value
Batteries not fully
charged /batteries
defect
Charge the batteries for at
least 12 hours and then check
capacity.
Please have the following information at hand before calling the After-Sales Service
Department:
1) Model number, serial number
2) Date on which the problem occurred
3) LCD/LED display information, Buzzer alarm status
4) Mains power condition, load type and capacity, environment temperature,
ventilation condition
5) The information (battery capacity, quantity) of Battery pack
6) Other information for complete description of the problem
