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Troubleshooting
Alarm or Condition
Power is not available at
the UPS output
receptacles.
The UPS does not provide
the expected backup time.
Check Parallel Board
Abnormal output voltage
at startup
Selective Trip
6 6 . . 2 2
S S i i l l e e n n c c i i n n g g t t h h e e A A l l a a r r m m
Before silencing an alarm, check the alarm condition and perform the applicable action to resolve the condition.
Press any button on the front panel display to silence the alarm. If the alarm status changes, the alarm beeps
again, overriding the previous alarm silencing.
6 6 . . 3 3
S S e e r r v v i i c c e e a a n n d d S S u u p p p p o o r r t t
If you have any questions or problems with the UPS, call your Local Distributor or the Eaton Customer
Support Center at one of the following telephone numbers.
54
Eaton 9155 Parallel UPS (8–15 kVA) User's Guide 164201592—Rev E0
Possible Cause
The remote emergency power-off (REPO)
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.
The UPS is not recognizing another
parallel unit.
The UPS breaker on the parallel tie
cabinet was not switched to the ON
position properly.
The Powerware Hot Sync CAN Bridge
Card is not wired correctly.
Action
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 TURN
UPS ON option; press the
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.
From the UPS Status menu, select the Units on CAN Bus
option and verify that all UPSs appear in the list.
If any UPS is missing, verify the Powerware Hot Sync
CAN Bridge Card connections and recheck the status
from the UPS front panel.
If all UPSs appear in the list, check the pull-chain wiring
(see page 26).
Set the system to internal Bypass mode (see page 53).
If the condition persists, contact your service
representative.
Shut down the UPS where the alarm is indicated.
Switch the UPS breaker on the parallel tie cabinet to the
ON position.
Start up the UPS.
Select the System On option through the front panel of
the UPS that was turned off.
Verify the CAN wiring (see page 26).
Verify the pull-chain wiring (see page 26).
If the condition persists, contact your service
representative.
button. Press and hold
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