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Chapter 6. Troubleshooting
This chapter provides basic troubleshooting information to help you resolve some
common problems that might occur while you are using the uninterruptible power
supply.
Audible alarms and uninterruptible power supply conditions
The uninterruptible power supply has an audible alarm feature to alert you of
potential power problems. Use Table 6 to determine and resolve the uninterruptible
power supply alarms and conditions.
General alarm LED
Silencing an audible alarm
To silence the alarm for an existing fault, press the Alarm reset button. If the
uninterruptible power supply status changes, the alarm beeps, overriding the
previous alarm silencing. The alarm does not silence if there is a low battery
condition.
Troubleshooting guide
The uninterruptible power supply alarms, conditions, causes, and actions are
described in Table 6. Use the following LED legend for an explanation of the LEDs.
LED legend
Table 6. Troubleshooting guide
Alarm or condition
The Power-on LED is not lit;
the uninterruptible power supply
does not start.
The Power-on LED is flashing;
power is not available at the
uninterruptible power supply
output receptacles.
© Copyright IBM Corp. 2006
On battery LED
Battery service LED
Not lit
Green
Red
Flashing
Possible cause
The power cord is not
connected correctly.
The wall outlet is faulty.
The uninterruptible power
supply is in Standby mode.
Load level LEDs
Power on LED
Site wiring fault LED
Action
Check the power cord connections
Have a qualified electrician test and repair the outlet.
Press the On button to supply power to the
connected devices.
On button
Off button
Alarm reset button
39
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