6.
Maintenance Guide
6.1
Troubleshooting
If the UPS malfunctions during operation please check that all lines are
connected properly and that the utility specifications are correct. Then
check the table below for solutions. Should the problem persist please
contact your local dealer for assistance.
Situation
Check Items
Solution
Fault
LED
Read the error code
(see next page)
displayed by the
combination of LEDs,
and verify the fault as
follows.
1. Er05,Er39
1. Check for proper battery
connection. Measure battery
voltage to ensure that batteries
are charged and healthy.
Recharge batteries for 8 hours
if necessary. Simulate utility
outage to verify that UPS is
able to provide DC backup.
Otherwise consult your local
dealer right away.
2. Overload
2. Disconnect some non-critical
loads from the UPS output until
the overload ceases. Check if
there is any short circuit
between cables due to broken
cable
insulation. Replace the cables if
necessary.
3. Er11 (UPS Over
Temperature)
3. Remove any objects
obstructing the ventilation
louvers. Verify that the cooling
fans are working properly.
Contact your local dealer to
replace the fans if necessary.
4. Site wiring/Ground
fault
4. Check if the “L” and “N”
phases of the utility AC source
have been wrongly wired or if
the Ground- Neutral voltage
exceeds the
limits.
Utility Condition
UPS Operating Mode
LEDs
Normal
Working power starts after
approximately 5 seconds, LEDs
on the panel will blink and fans
will start. Press the ON button
for 1-5 seconds. The UPS starts
up normally.
,
,
and
LEDs
remain lit
Abnormal (under
or over voltage or
absent)
Rectifier and charger stop
operating.
Battery discharges via DC-DC
boost circuit and supplies
Inverter. Loads continue to
receive supply from Inverter.
Alarm buzzer beeps. UPS now in
battery mode.
LED off, LED
illuminated
Utility abnormal
or absent, or
battery voltage
low
Rectifier and charger stop
operating.
Battery discharges via DC-DC
boost circuit and supplies
Inverter. Alarm buzzer beeps
quickly, indicating battery
power low and Inverter may stop
supplying soon
LED off, and
LEDs illuminated
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