PowerWalker VFI 6000T LCD - Manual (Page 53)

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7.3 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 On-Switch “I” 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 external battery pack if the
UPS is “S” model
6. Other information for complete description of the problem