DELL 5600R OL HV-US User Manual
71
Troubleshooting
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Alarm or Condition
Action
Possible Cause
Bypass AC Under Voltage
(Notice 4)
Intermittent Alarm
The measured voltage on
Bypass is less than the upper
voltage limit specification for
bypass operation.
Bypass is less than the upper
voltage limit specification for
bypass operation.
A notification alarm is generated and the
notice is logged.
notice is logged.
Only apply this setting when Qualify Bypass is
set to Always and utility is present, but below
the bypass undervoltage range.
set to Always and utility is present, but below
the bypass undervoltage range.
Do not apply this setting if a Utility Not
Present alarm is active.
Present alarm is active.
Bypass Under/Over Freq
(Notice 5)
Intermittent Alarm
The measured voltage on
Bypass is out-of-range for either
the upper or lower voltage limit
specification for bypass
operation.
Bypass is out-of-range for either
the upper or lower voltage limit
specification for bypass
operation.
A notification alarm is generated and the
notice is logged.
notice is logged.
Only apply this setting when Qualify Bypass is
set to Always and utility is present, but outside
the bypass frequency range.
set to Always and utility is present, but outside
the bypass frequency range.
Do not apply this setting if a Utility Not
Present alarm is active.
Present alarm is active.
Rectifier Input Over Current
(Alarm 26)
Continuous Alarm
The UPS has detected that
rectifier input current limits
have been exceeded.
rectifier input current limits
have been exceeded.
The UPS transfers to Battery mode if
supporting the load.
supporting the load.
Inverter Output Over
Current
Current
(Alarm 27)
Continuous Alarm
The UPS has detected that the
inverter output current limits
have been exceeded.
inverter output current limits
have been exceeded.
The UPS transfers to Bypass mode if
supporting the load.
supporting the load.
DC Link Over Voltage
(Alarm 28)
Continuous Alarm
The link or rail voltage has
exceeded its upper threshold
limit.
exceeded its upper threshold
limit.
The UPS transfers to Battery mode if
supporting the load.
supporting the load.
DC Link Under Voltage
(Alarm 29)
Intermittent Alarm
The link or rail voltage has
dropped below its lower
threshold limit.
dropped below its lower
threshold limit.
The UPS transfers to Battery mode if
supporting the load.
supporting the load.
DC Link Imbalance
(Alarm 1234)
Intermittent Alarm
The internal ± DC bus (DC
rail) voltages generated in the
UPS are imbalanced.
rail) voltages generated in the
UPS are imbalanced.
The UPS transfers to Battery mode if
supporting the load.
supporting the load.
Rectifier Fault
(Alarm 30)
Continuous Alarm
The UPS has detected a fault in
the rectifier circuit while
attempting recovery from
Bypass mode or Converter
mode.
the rectifier circuit while
attempting recovery from
Bypass mode or Converter
mode.
Contact your service representative.