Powerware 9155 User Manual page 62

TROUBLESHOOTING
Alarm or Condition Possible Cause
Overtemperature UPS internal temperature is too high
or the fan has failed.
LED is on.
1 beep every second.
Battery test failed The batteries need service.
The UPS does not start. The main utility breaker is off.
If an optional isolation transformer is
installed, the input circuit breaker is
off.
The remote emergency power-off
(REPO) switch is active or the REPO
connector is missing.
Power is not available at The UPS is in Standby mode.
the UPS output
receptacles.
The UPS does not The batteries need charging or
provide the expected service.
backup time. p
Battery circuit breakers are in the OFF
position.
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EATON Powerware
®
9155 Parallel UPS (8–15 kVA) User's Guide
Action
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 button on the front panel
display and then press the button to select the
TURN UPS ON/OFF menu. Press the button to
select the System On option; press the
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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button.