Eaton 9155 User Manual page 63

C C h h a a p p t t e e r r 6 6 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
The Eaton 9155 UPS is designed for durable, automatic operation and also alerts you whenever potential
operating problems may occur. Usually the alarms shown by the control panel do not mean that the output
power is affected. Instead, they are preventive alarms intended to alert the user. Use the following
troubleshooting chart to determine the UPS alarm condition.
6 6 . . 1 1 T T y y p p i i c c a a l l A A l l a a r r m m s s a a n n d d C C o o n n d d i i t t i i o o n n s s
The following table describes typical alarms and conditions; check the Event Log through the control panel for a
list of active alarms. If an alarm appears with a service code, please contact the Help Desk (see page
6.3 Service and
Alarm or Condition
On Battery
LED is on.
1 beep every second.
Battery Low
LED is on.
Continuous beep for 10
seconds.
Battery Breaker
LED is on.
1 beep every second.
Overload
LED is on.
1 beep every second.
Overtemperature
LED is on.
1 beep every second.
Battery test failed
The UPS does not start.
Support).
Possible Cause
A utility failure has occurred and the UPS
is in Battery mode.
The battery is running low.
The UPS does not recognize the internal
batteries.
Power requirements exceed the UPS
capacity (greater than 100% of nominal;
see page 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.
Eaton 9155 Parallel UPS (8–15 kVA) User's Guide 164201592—Rev E0
Action
The UPS is powering the equipment with battery power.
Prepare your equipment for shutdown.
Five minutes or less of battery power remains
(depending on load configuration and battery charge).
Save your work and turn off your equipment.
When utility power is restored, the UPS restarts
automatically, provides power to the load, and charges
the battery.
Verify the battery circuit breaker is in the ON position. If
the condition persists, contact your service
representative.
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.
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.
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.
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