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.
Load level LEDs
On button
Off button
Alarm reset button
General alarm LED
On battery LED
Battery service LED
Site wiring fault LED
Power on 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.
Red
Flashing
Not lit
Green
LED legend
Table 6. Troubleshooting guide
Alarm or condition Possible cause Action
The Power-on LED is not lit;
the uninterruptible power supply
does not start.
The power cord is not
connected correctly.
Check the power cord connections
The wall outlet is faulty. Have a qualified electrician test and repair the outlet.
The Power-on LED is flashing;
power is not available at the
uninterruptible power supply
output receptacles.
The uninterruptible power
supply is in Standby mode.
Press the On button to supply power to the
connected devices.
© Copyright IBM Corp. 2006 39
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