Eaton 9155 UPS - Troubleshooting

82 Eaton 9155 UPS (8–15 kVA) User’s Guide 164201553—Rev H0
Table 12. Troubleshooting Guide (Continued)
Alarm or Condition Possible Cause Action
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.
Battery test failed
The batteries need service. Contact your service representative.
The UPS does not start.
The main utility breaker is off. Verify that the main utility breaker is on.
If an optional isolation transformer is
installed, the input circuit breaker is off.
Verify that the isolation transformer input
circuit breaker is on.
The remote emergency power-off (REPO)
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
button to select the TURN UPS ON/OFF
menu. Press the
button to select the
TURN UPS ON option; press the
button. Press and hold the button
for three seconds, until the UPS stops
beeping.
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.
Battery circuit breakers are in the OFF
position.
Switch all battery circuit breakers to the
ON position.
99..22 SSiilleenncciinngg tthhee AAllaarrmm
Before silencing an alarm, check the alarm condition and perform the applicable action to resolve the condition
(see Table 12).
To silence the alarm for an existing fault, press any button on the front panel display. If the alarm status
changes, the alarm beeps again, overriding the previous alarm silencing.
Troubleshooting