Silencing The Alarm - Dell 3750W User Manual

Table 15. Typical Alarms and Conditions (continued)
Alarm or Condition
DC Link Over Voltage
(Alarm 28)
Continuous Alarm
DC Link Under Voltage
(Alarm 29)
Continuous Alarm
Rectifier Fault
(Alarm 30)
Continuous Alarm
Inverter Fault
(Alarm 31)
Continuous Alarm
Fatal EEPROM Fault
(Alarm 53)
Continuous Alarm
Output Short Circuit
(Alarm 58)
Continuous Alarm
Fan Failure
(Alarm 193)
Continuous 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 link or rail voltage has
exceeded its upper threshold
limit.
The link or rail voltage has
dropped below its lower
threshold limit.
The UPS has detected a fault in
the rectifier circuit while
attempting recovery from
Bypass mode or Converter
mode.
The UPS has detected a fault in
the inverter circuit while
attempting a recovery from
Bypass mode or Converter
mode.
There is EEPROM data
corruption due to a failed
device or incorrect flash
upgrade.
The UPS has detected an
abnormally low impedance
placed on its output and
considers it a short circuit.
The UPS has detected that one
or more fans are not
functioning properly.
Action
The UPS transfers to Bypass mode if
supporting the load.
The UPS transfers to Bypass mode if
supporting the load.
Contact your service representative.
Contact your service representative.
Contact your service representative.
If the UPS is in Normal mode, the UPS
transfers to Bypass mode if available,
otherwise, the UPS shuts down after five line
cycles.
If the UPS is in Battery mode, the UPS shuts
down after five line cycles.
This is an alarm only. Contact your service
representative immediately and remove the
load.
Troubleshooting
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