6:TROUBLESHOOTING
Use the chart below to solve minor uninterruptible power supply installation and operation problems. Refer to IBM for assis- tance with complex uninterruptible power supply problems.
PROBLEM AND/OR POSSIBLE | SOLUTION |
CAUSE |
|
UNINTERRUPTIBLE POWER SUPPLY WILL NOT TURN ON | |
Uninterruptible power supply | Check that the power cord from the uninterruptible power supply to the util- |
not connected to utility power | ity power supply is securely connected at both ends. |
supply. |
|
|
|
Battery not connected prop- | Check that the battery connector is fully snapped into position. |
erly. |
|
|
|
Very low or no utility voltage. | Check the utility power supply to the uninterruptible power supply by plug- |
| ging in a table lamp. If the light is very dim, have the utility voltage |
| checked. |
|
|
UNINTERRUPTIBLE POWER SUPPLY WILL NOT TURN OFF | |
Internal uninterruptible power | Do not attempt to use the uninterruptible power supply. Unplug the uninter- |
supply fault. | ruptible power supply and have it serviced immediately. |
|
|
UNINTERRUPTIBLE POWER SUPPLY BEEPS OCCASIONALLY | |
Normal operating uninterrup- | None. The uninterruptible power supply is protecting the connected equip- |
tible power supply beeps | ment from occasional utility power irregularities. |
when running on battery. |
|
|
|
UNINTERRUPTIBLE POWER SUPPLY IS NOT PROVIDING EXPECTED BACKUP TIME | |
The uninterruptible power | Charge the battery. Batteries require recharging after extended outages, and |
supply battery is weak due to | wear faster when frequently put into service or when operated at elevated |
a recent outage or is near the | temperatures. If the battery is near the end of the service life, consider re- |
end of the service life. | placing the battery even if the replace battery LED is not yet illuminated. |
|
|
ALL LEDS ARE ILLUMINATED AND THE UNINTERRUPTIBLE POWER SUPPLY EMITS A CONSTANT | |
BEEPING |
|
Internal uninterruptible power | Do not attempt to use the uninterruptible power supply. Turn off the uninter- |
supply fault. | ruptible power supply and have it serviced immediately. |
|
|
FRONT PANEL LEDS FLASH SEQUENTIALLY | |
The uninterruptible power | None. The uninterruptible power supply will restart automatically when |
supply has been shut down | utility power returns. |
remotely through software or |
|
an optional accessory card. |
|
|
|
ALL LEDS ARE OFF AND THE UNINTERRUPTIBLE POWER SUPPLY IS PLUGGED INTO A WALL OUTLET | |
The uninterruptible power | None. The uninterruptible power supply will return to normal operation |
supply is shut down or the | when the power is restored and the battery has a sufficient charge. |
battery is discharged from an |
|
extended outage. |
|
|
|
THE OVERLOAD LED IS ILLUMINATED AND THE UNINTERRUPTIBLE POWER SUPPLY EMITS A SUS- | ||
TAINED ALARM TONE |
| |
The uninterruptible power sup- | The connected equipment exceeds the specified “maximum load.” | |
ply is overloaded. The con- | The alarm remains on until the overload is removed. Disconnect nonessen- | |
nected equipment is drawing | ||
tial equipment from the uninterruptible power supply to eliminate the over- | ||
more VA or more Watts than | ||
load. | ||
the uninterruptible power sup- | ||
The uninterruptible power supply continues to supply power as long as it is | ||
ply can sustain. | ||
| online and the circuit breaker does not trip; the uninterruptible power sup- | |
| ply will not provide power from batteries in the event of a utility voltage | |
| interruption. | |
| If a continuous overload occurs while the uninterruptible power supply is | |
| on battery, the unit turns off output in order to protect the uninterruptible | |
| power supply from possible damage. | |
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| 14 | |