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7. TROUBLE SHOOTING:
Problem
Possible Causes
Action To Take
1. City power normal
without any LED
AC fuse broke?
Bad connection or
disconnection of power cord.
Change fuse.
Re-connect it.
2. Time of back up too
short
Battery life is due?
Blackout too often?
Change battery
Be sure charging time
3. Both LEDs (RED &
GRN) lighting with
continuous beep
Dead battery
Change battery
4. Both LEDs (RED &
GRN) lighting with
continuous beep
Voltage of city power too
high/low
(<75% or >125% of rated
voltage)
Turn off your P.C./fax, and
wait city power back to
normal
Dead battery
Change battery
Disconnection of battery
leads?
Re-connect it.
5. No any output when
blackout happen
UPS out of order?
Call for service.
