Eaton 9155 UPS (8–15 kVA) User’s Guide 164201553—Rev H0 81
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This section explains:
• Typical UPS alarms and conditions
• How to silence an alarm
• Service and support
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Table 12 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 paragraph
1.6 Getting Help.
Table 12. Troubleshooting Guide
Alarm or Condition Possible Cause Action
On Battery
LED is on.
1 beep every second
A utility failure has occurred and the UPS
is in Battery mode.
The UPS is powering the equipment with
battery power. Prepare your equipment
for shutdown.
Battery Low
LED is on.
Continuous beep for 10 seconds
The battery is running low. 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.
Battery Breaker
LED is on.
1 beep every second
The UPS does not recognize the internal
batteries.
Verify the battery circuit breaker is in the
ON position. If the condition persists,
contact your service representative.
Overload
LED is on.
1 beep every second
Power requirements exceed the UPS
capacity (greater than 100% of nominal;
see page 75 for specific output overload
ranges).
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.
Overtemperature
LED is on.
1 beep every second
UPS internal temperature is too high or
the fan has failed.
If you have an optional Maintenance
Bypass Module (MBM) or Power
Distribution Module (PDM), turn the
maintenance bypass switch to the
SERVICE position. If you have a wall-
mounted bypass switch, turn the
maintenance bypass switch to the LINE
position. Otherwise, shut down the UPS.
Clear vents and remove any heat sources.
Allow the UPS to cool.
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