Vertiv Liebert iCOM - Page 131

Table 8.1 below , lists problems you may encounter with the Unity software and possible solutions.
Problem Possible cause Suggested Remedy
Settings are not available
in local unit Liebert® iCOM™ display,
show as "IS-Unity Service is
Unavailable"
Embedded Unity is not enabled.
Make sure the correct monitoring protocol is selected in
BMS Setup.
See Configuring BMS Communication with Embedded Unity
on page117 .
Unity software needs more time to boot up since
most recent Liebert® iCOM™ controller or Unity
reboot.
Wait no more than 10minutes to give enough time to boot
up.
The Liebert® iCOM™ user and password for Unity
are incorrect.
Enter a valid user name and password for the Liebert®
iCOM™-to-Unity connection.
See Embedded Unity User and Password on the next page .
Embedded Unity has crashed.
Restart, and wait at least 5minutes to fully boot up.
See Unity Restart and Restore Defaults on the next page .
Unity configuration had become corrupt.
Restore to defaults, see Unity Restart and Restore Defaults
on the next page .
NOTE: All customized Unity configuration settings will
be lost. Use this as a last resort.
Ethernet to BMS network not
communicating or connecting
BMSEthernet drop is connected to the wrong
RJ-45 connector on the Liebert® iCOM™ control
board.
Make sure that the cable is connected to P74 on the
Liebert® iCOM™ control board, and corrected if needed.
Ethernet cable is bad or incorrectly made.
Use a cable tester that gives a quality rating and length
(sends a true data packet) to test the cable and correct as
needed.
Incorrect network settings.
Correct the IPv4 network settings, see IPv4 and IPv6
Configuration on page128 .
NOTE: If you adjust the settings, you must restart the
Unity software for the changes to take effect.
485twisted pair to BMS network not
communicating or connecting
Incorrect polarity.
Correct the polarity.
See Connecting to the BMS on page120 .
Incorrect protocol settings.
Verify and correct the settings. Refer to the configuration
settings that apply to your system:
• BACnet Protocol Setup on page141 .
• Modbus Protocol Setup on page144 .
• SNMP Protocol Setup on page146 .
Protocol settings have not been saved.
Save the settings, and restart Unity so the configuration is
authorized/applied.
See Unity Restart and Restore Defaults on the next page .
Table 8.1 Embedded Unity Troubleshooting
8 External Monitoring andBuilding ManagementSystems
123
Vertiv™ Liebert® iCOM™Installer/User Guide