C450R User Manual
Page 27
TROUBLESHOOTING
Conditions
Possible cause
Action
Battery mode
LED is On. 1 beep every 4
seconds.
A utility failure has occurred,
and the UPS is in Battery
mode.
The UPS is powering the equipment with
battery power. Prepare your
equipment for shutdown.
Battery low
LED is On.
1 beep every second.
The UPS is in Battery mode
and the battery is running
low.
This warning is approximate, and the
actual time to shutdown may vary
significantly.
No battery
LED is On. Beep
continuous.
The batteries are
disconnected.
1. Verify that all batteries and battery
detection cable (RJ45) are properly
connected.
2. Check the LCD menu: Settings –
External battery. If select the “Manual
EBM” and Value is 0, please set the
right value.
Battery fault
LED is On. Beep
continuous.
The battery test has failed
due to bad or disconnected
batteries, or the battery
minimum voltage is reached
in Optimize Battery
Management (OBM) cycling
mode.
Verify that all batteries are properly
connected. Start a new battery test: if
the condition persists, contact your
service representative.
The UPS does not
provide the expected
backup time.
The batteries need charging
or service.
Apply utility power for 48 hours to
charge the batteries. If the condition
persists, contact your service
representative.
Bypass mode
LED is on.
An overload or a fault has
occurred, or a command has
been received and the UPS is
in Bypass mode. Or auto
bypass function is enabled.
Equipment is powered but not
protected by the UPS. Check for one of
the following alarms: overtemperature,
overload, UPS failure or auto bypass
setting.
Power overload
LED is On.
1 beep every second.
Power requirements exceed
the UPS capacity (greater
than 105% of nominal;
Remove some of the equipment from
the UPS. The alarm resets when the
condition becomes inactive.
Over temperature
warning
LED is On.
1 beep every second.
The UPS internal temperature
is too high. At the warning
level, the UPS generates the
alarm but will remains in the
current operating state.
Clear vents and remove any heat
sources. Ensure the airflow around the
UPS is not restricted.
The UPS does not start.
The input source is not
connected correctly.
Check the input connections.
The Remote Power Off (RPO)
switch is active or the RPO
connector is missing.
If the UPS Status menu displays the
"Remote Power Off" notice, inactivate
the RPO input.
Emergency power off
RPO is active
1.Check the RPO connector status
2.Reset the RPO fault through LCD. Main
menu – Control - Reset fault state.
