Powerware 9155 User Manual page 98

Troubleshooting
Alarm or Condition
Overload
LED is on.
1 beep every second.
Overtemperature
LED is on.
1 beep every second.
Battery test failed
The UPS does not
start. t t
Power is not available
at the UPS output
receptacles.
The UPS does not
provide the expected
backup time. p
92
Powerware
Possible Cause
Power requirements exceed the
UPS capacity (greater than 100% of
nominal; see page 87 for specific
output overload ranges).
UPS internal temperature is too
high or the fan has failed.
The batteries need service.
The main utility breaker is off.
If an optional isolation transformer
is installed, the input circuit
breaker is off.
The Remote Emergency Power-off
switch is active or the REPO
connector is missing.
The UPS is in Standby mode.
The batteries need charging or
service.
Battery circuit breakers are in the
OFF position.
9155 UPS (8–15 kVA) User's Guide
®
Action
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.
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
restart the UPS if you do not have a switch).
If the condition persists, contact your service
representative.
Contact your service representative.
Verify that the main utility breaker is on.
Verify that the isolation transformer input
circuit breaker is on.
Reset the REPO switch and restart the UPS.
Verify that the REPO connector is present.
Supply power to the connected equipment:
Press any button on the front panel display to
activate the menu options. Press the
on the front panel display and then press
the button 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.
Apply utility power for 48 hours to charge the
batteries. If the condition persists, contact your
service representative.
Switch all battery circuit breakers to the ON
position.
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