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Chapter 10
Typical Alarms and Conditions
Alarm or Condition
Possible Cause
On Battery
A utility failure has occurred and the
UPS is in Battery mode.
LED is on.
1 beep every second.
Battery Low
The battery is running low.
LED is on.
Continuous beep for
10 seconds.
Battery Breaker
The UPS does not recognize the
internal batteries.
LED is on.
1 beep every second.
Overload
Power requirements exceed the UPS
capacity (greater than 100% of
nominal).
LED is on.
1 beep every second.
®
EATON Powerware
9355 Parallel UPS (10/15 kVA) User's Guide
Troubleshooting
The Powerware 9355 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.
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 56).
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.
S
164201601 Rev A www.powerware.com
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