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Troubleshooting
92
Powerware
®
9155 UPS (8–15 kVA) User’s Guide S 164201553 Rev D www.powerware.com
ActionPossible CauseAlarm or Condition
Overload
LED is on.
1 beep every second.
Power requirements exceed the
UPS capacity (greater than 100% of
nominal; see page 87 for specific
output overload ranges).
Remove some of the equipment from the UPS.
The UPS continues to operate, but may switch
to Bypass Mode if the load increases . The
alarm resets when the condition becomes
inactive.
Overtemperature
LED is on.
1 beep every second.
UPS internal temperature is too
high or the fan has failed.
If you have an optional Maintenance Bypass
Module or Power Distribution Module, turn
the Maintenance Bypass switch to the SERVICE
position. Otherwise, shut down the UPS.
Clear vents and remove any heat sources.
Allow the UPS to cool. Ensure the airflow
around the UPS is not restricted.
If the alarm disappears, turn the Maintenance
Bypass switch back to the UPS position (or
restarttheUPSifyoudonothaveaswitch).
If the condition persists, contact your service
representative.
Battery test failed The batteries need service. Contact your service representative.
The U PS does not
t
t
The main utility breaker is off. Verify that the main utility breaker is on.
start.
If an optional isolation transformer
is installed, the input circuit
breaker is off.
Verify that the isolation transformer input
circuit breaker is on.
TheRemoteEmergencyPower-off
switch is active or the REPO
connector is missing.
Reset the REPO switch and restart the UPS.
Verify that the REPO connector is present.
Power is not available
at the UPS output
receptacles.
The UPS is in Standby mode. Supply power to the connected equipment:
Press any button on the front panel display to
activate the menu options. Press the button
on the front panel display and then press
the butto n to select the TURN UPS
ON/OFF menu. Select the ON option. Press and
hold the button for three seconds, until
the UPS stops beeping.
The U PS 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.
p
Battery circuit breakers are in the
OFF position.
Switch all battery circuit breakers to the ON
position.