Eng
SMART 1000/1500/2000/3000
9. TROUBLESHOOTING
17
Situation
Check items
Solution
Mains normal but 'Line' LED is not on
Is the power switch on?
Is the fuse in order?
Is the power cord loose?
Press Main Switch on
Change fuse with same rating
Reconnect the power cord properly
'Inverter' LED flashes every 2 second
but no output
Battery voltage is too low
Recharge the UPS for 24 hours
Alarm buzzer beeps continuously when
Utility is normal
Check to see load status if it is in over
load
Remove some uncritical load
Alarm buzzer beeps for 10 seconds,
then the UPS is turned off
Remove some uncritical load and re
switch on the UPS
No LED's display on the front panel
Consult with your sales agent For help
UPS dose not provide expected back up
time
The UPS's battery is weak due to recent
outage.The UPS's battery is near the
end of its service life
Charge the battery
If the battery is near the end of its serv
ice lift, consider replacing the battery
UPS switch on then connect Utility, but
UPS is unable to work under Utility
mode
Is the Utility normal?
If Utility is normal, connect Utility first
then restart UPS
