Silencing The Alarm - IBM 11000 VA LCD 5U Installation And Maintenance Manual

Table 14. Typical alarms and conditions (continued)
Alarm or condition
Heatsink Over Temperature
(Alarm 73)
Fast Beeping Alarm
Fatal EEPROM Fault
(Alarm 53)
Continuous Alarm
DC Link Imbalance
(Alarm 1234)
Fast Beeping Alarm
Fan Failure
(Alarm 193)
Continuous Alarm
Bypass AC Over Voltage
(Notice 3)
Slow Intermittent Alarm
Bypass AC Under Voltage
(Notice 4)
Slow Intermittent Alarm
Bypass Under/Over Frequency
(Notice 5)
Slow Intermittent Alarm

Silencing the alarm

Press any button on the control panel to silence the alarm. Check the alarm
condition and perform the applicable action to resolve the condition. If any new
alarm becomes active, the audible alarm resumes, overriding the previously
silenced alarm.
Possible cause
The UPS has detected that one of its
heat sinks has exceeded the
maximum defined operating
temperature. Possible fan failure.
There is EEPROM data corruption
due to a failed device or incorrect
flash upgrade.
The internal ±DC bus (DC rail)
voltages generated in the UPS are
imbalanced.
The UPS has detected that one or
more fans are not functioning
correctly.
The measured voltage on Bypass has
exceeded the upper voltage limit
specification for bypass operation.
The measured voltage on Bypass is
less than the lower voltage limit
specification for bypass operation.
The measured frequency on Bypass
is outside of either the upper or lower
frequency limit specification for
bypass operation.
Action
The UPS transfers to Bypass mode if
available. If bypass is not available or
the UPS is in power on or Standby
mode, the UPS transfers to Fault
mode and shuts down.
Make sure that the fans are spinning
and that the air intake vents on the
UPS are not blocked. The alarm
clears when the heat sink
temperature drops 5°C (9°F) below
the warning level.
Contact your service representative.
The UPS transfers to Bypass mode if
available and supporting the load, or
Fault mode if not.
This is an alarm only. Contact your
service representative immediately
and remove the load.
Check the bypass utility. Check that
the Bypass settings are configured
correctly for your location. See
Table 8 on page 32.
Check the bypass utility. Check that
the Bypass settings are configured
correctly for your location. See
Table 8 on page 32.
Check the bypass utility. Check that
the Bypass settings are configured
correctly for your location. See
Table 8 on page 32.
Chapter 6. Troubleshooting
61