Troubleshooting
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CAUTION
！
Internal maintenance and inspection should be performed only by technically qualified
personnel. Electric shock, injury, burning, fuming or fire could otherwise result.
Before beginning inspection, shut down the UPS completely, and remove the input
power. Failure to do so may result in an electric shock.
While the batteries are connected to the UPS, hazardous voltage is present. Never
touch any parts with your hand. Doing so may result in an electric shock.
If a problem occurs, check the condition of the UPS and perform countermeasures listed in the table below.
UPS Status
LED Status
Countermeasure
When the UPS starts,
the buzzer sounds and
“Green BATT.TEST”
blinks.
Green
BATT.TEST
blinking
Check that the battery connectors are connected properly.
Stop the UPS, refer to §7.1 “Battery Connector Connection”, and
firmly connect the battery connectors.
After connecting the battery connectors, start the UPS, and check to
make sure that buzzer sounds are not head and that “Green
BATT.TEST” does not blink.
Green OUTPUT
off
Check whether the input wiring has been performed correctly. Refer to
§7 “Wiring”.
Verify that the input voltage and input frequency are within the rated
range. See §17.4 “Specifications”.
must be pressed for at least 1 second.
See §11.1 “UPS Startup” for the correct startup procedure.
All off
Check that
MAIN SW
is set to “ON”.
See §11.1 “UPS Startup” for the correct startup procedure.
Green INPUT
blinking
Check whether the output voltage is set correctly. See §3.2 “Setting
Output Voltage” in the
User Settings Guide
.
Verify that the input voltage and input frequency are within the rated
range. See §17.4 “Specifications”.
No output power is
supplied from the
output terminal of the
UPS.
Red ALARM lit
The bypass breaker may be tripped. See §13.3 “Bypass Breaker
Reset”.
Green OUTPUT
lit
must be pressed for at least 1 second. See §11.2 “UPS
Shutdown” for the correct shutdown procedure. However, bypass
power supply continues if bypass operation was started by changing
over with the forced bypass switch, overload, or failure.
Check the setting of “UPS Shutdown Operation” in the user setting
menu. It may be set to “3 seconds” or “Special operation”. The factory
default setting is “1 second”. See §3.9 “Setting UPS Shutdown
Operation” in the
User Settings Guide
.
Output power from the
output terminal of the
UPS does not stop.
Green OUTPUT
blinking
Check the setting of “UPS Operation at
OFF” in the user
setting menu. It may be set to “Bypass”. The factory default setting is
“OFF”. See §3.11 “Setting UPS Operation at
OFF” in the
User
Settings Guide
.
Green INPUT lit
may be turned off by accidental operation.
Press
for at least 1 second to turn on.
Output power from the
output terminal of the
UPS stops during
operation.
Red ALARM lit
Check whether the bypass breaker is tripped. It may have been blown
or tripped by an overload or short circuit. Check the total load and the
possibility of a short circuit. When the total load is high, reduce the
number of load devices connected to the UPS. See §13.3 “Bypass
Breaker Reset”.
Output power from the
output terminal of the
UPS stops during
power outage.
Red ALARM on,
Red BATT.LOW
lit
Check whether the battery has deteriorated.
Check the time to replace the battery.
The battery service life will differ depending on the ambient
temperature. Earlier battery replacement is recommended.
Check whether there was a power outage within the last 12 hours.
The battery level may be low. Sufficiently charge the UPS.
Alarm buzzer sounds.
-
The alarm buzzer sounds when an error, abnormal state, or alarm
condition is detected in the UPS. See §14 “Buzzer Sounds”.
