Chapter 3 Operation And Display Panel 31
Liebert ITA 16kVA/20kVA User Manual
Alarm message
Description
DC bus over voltage
Rectifier and inverter were shut down because DC bus voltage is too high. Check whether there is a
fault in rectifier side. If not, check whether there is an overload. After recovering the fault, restart the
inverter
Bypass over current
Bypass current is over limit above 135% rating. The UPS just alarms and does nothing
Setting save error
History records not saved. (Reserved)
Fault of entering
㔎䳊
AC mains input neutral line is not checked out
Protocol version clash
Firmware incompatibility between Monitor Board and Digital Signal Processor Board
Manual on
Manual Turn On through operator control and display panel
Manual off
Manual Turn Off through operator control and display panel
EPO
Press the EPO switch directly or receive the external EPO command
Transfer confirm
Prompt to press the Enter key to acknowledge that an interrupted load transfer to bypass will happen
Transfer cancel
Prompt to press the ESC key to avoid that an interrupted load transfer to bypass will happen
Fault clear
Press FAULT CLEAR
Alarm silence
Press ALARM CLEAR
Turn on fail
Inverter failed to turn on when INVERTER ON direct access key was pressed. This may be as a result
of Invalid Operation (Maintenance bypass on) or DC bus or rectifier not ready
Alarm silence cancle
Press FAULT CLEAR or ALARM CLEAR
Bypass mode
The UPS is in Bypass mode
Normal mode
The UPS is in Normal mode
Battery mode
The UPS is in Battery mode
Check UPS output
The UPS is off and has no output
Battery float charging Battery status (Float charge mode)
Battery boost
charging
Battery status (Boost charge mode)
Battery discharging
Battery status (discharge mode)
Battery period testing
Automatic periodic battery maintenance discharge test (20% capacity discharge)
Batt. capacity testing
User initiated battery capacity discharge test (100% capacity discharge)
Batt. maint. testing
User initiated maintenance discharge test (20% capacity discharge)
UPS system testing
User initiated system test
Inverter in setting
Inverter starting up and synchronizing
Rectifier in setting
Rectifier starting up and synchronizing
Battery reverse
Reconnect the battery, check the battery connection
No battery
Check the battery and the battery wiring
Auto start
After UPS was shutdown at EOD, inverter auto starts when utility restore
REC FLASH
UPDATE
Ongoing update of rectifier firmware
INV FLASH UPDATE
Ongoing update of inverter firmware
MONITOR FLASH
UPDATE
Ongoing update of monitor firmware
DSP softwar error
Inverter software does not match the rectifier software
Note: When the alarm is caused through setting the software value by the Emerson authorized engineer, if you wish to change
the setting values, please get in touch with the Emerson local customer service center
