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8.3. Trouble Shooting in Else Cases
Problem
No indication, no warning
tone even though system
is connected to mains
power supply
BYPASS icon
even though the power
supply is available
BATTERY icon
and audible alarm sound-
ing every 1 beep in every
4 seconds
Emergency supply
period shorter than
nominal value
26
Possible cause
No input voltage
flash
Inverter not switched on
flash,
Input voltage and/or
frequency are out of
tolerance
Batteries not fully
charged / batteries defect
Remedy
Check the building wiring
and input cable;
Check if the input breaker is
closed.
Press button ON to turn on
UPS.
Check input power source;
Check the building wiring
and input cable;
Check if the input breaker
is closed.
Charge the batteries for at
least
12 hours and then check
capacity.
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