OPTI-UPS PS7500DL - Manual (Page 15)

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7.TROUBLE SHOOTING GUIDE
7.1 For LCD Model
The following guideline may be helpful for basic problem solving.
No. UPS STATUS POSSIBLE CAUSE ACTION
1
AC utility power is normal.
UPS is running normally,
but fault LED lits up.
Buzzer beeps
continuously. 1. Charger PCB is
damaged.
2. Fan is damaged.
3. Unknown
1. Replace the charger
PCB.
2. Replace the fan.
3. Restart UPS
3
AC utility power is normal
but UPS is overloaded.
Warning LED lits up and
buzzer beeps per second. Overload
100%< load< 125%
Please reduce the
critical load to <100%.
4
AC utility power is normal.
Warning LED does not
fade out and buzzer
beeps per 0.5 second. Overload
125%< load<150%
Please reduce the
critical load to <100%.
5
AC utility power is normal.
Warning LED lits up and
buzzer beeps
continuously. Overload
150%< load
Please reduce the
critical load to <100%.
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No. UPS STATUS POSSIBLE CAUSE ACTION
6
AC utility power
fails .The load is
supplied by battery
power. Buzzer alarm
sounds every 4
seconds.
1. AC utility power
failure.
2. AC input
connection may
be not correct.
1. Reduce the less
critical load in
order to extend
backup time.
2. Please check
the rated input or
connected line.
7
AC utility fails. UPS is in
battery backup mode.
Buzzer alarm beeps
every second. Battery power is
approaching low
level. UPS will shut
down
automatically.
Please save data
or turn off the
loads soon.
8
AC utility power fails.
UPS has shut down
automatically. Battery runs out UPS will restart up
when AC utility
power is restored.