8.0 Diagnostics
Condition
Description
LED Diagnostics
Alarm
BACK-UP MODE
UPS in on back-up mode due
to AC Loss
YELLOW
Slow beeping. UPS sounds until AC utility
power recovers.
AC MODE
Normal condition source
supplied by AC Mains
GREEN
No Alarm
AC MODE OVERLOAD
Load around 110% of it's rated
capacity
GREEN/RED
Alarm is ON for 4 seconds / OFF for 0.8
seconds, until load is removed. UPS will not
shut down.
Load > 120% of it's rated
capacity
GREEN/RED
After continuous alarm for 30 seconds, the
UPS will be on standby mode. Next, the alarm
will sound for 2 minutes, and the UPS will
shut down.
BACK-UP MODE OVERLOAD
Load around 105% of it's rated
capacity
YELLOW/RED
After continuous alarm for 3 seconds, the
UPS will be on standby mode. Next, the alarm
will sound for 2 minutes, and the UPS will
shut down.
Load > 120% of it's rated
capacity
YELLOW/RED
After continuous alarm for 3 seconds, the
UPS will be on standby mode. Next, the
alarm will sound for 2 minutes, and the UPS
will shut down.
LOW BATTERY
YELLOW
During back-up mode when the battery
charge runs low, the UPS beeps rapidly (ON
0.25 seconds, OFF 0.25 seconds) until the UPS
shuts down or returns to AC Mode.
GREEN MODE ENABLED
If load < 60W or approximately
2% ~ 4% of the Wattage
capacity of the UPS Unit will
shutdown
Flashing GREEN LED, every 5
seconds
Alarm sounds every 30 seconds after UPS
enters idle mode.
Table 2: Diagnostics LED/Alarms
SDU AC - A SERIES INSTRUCTION MANUAL |
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