Vertiv Liebert iCOM - Page 27

To Acknowledge Alarms
1. On the ALARMS panel, touch Acknowledge All. A check mark overlays the status indicator of the active alarms
and warnings, and these automatically clear when the condition is no longer present.
• If a critical event must be manually reset, the acknowledged items are listed with a Reset All button on the
ALARMS panel.
2. Touch Reset All to manually reset the condition.
Network Failure Description
UNIT XX DISCONNECTED
The Liebert® iCOM™ I/O board assigned as U2U address number XX (two up to thirty-two) has lost communication with the
group.
Make sure all units are powered on at the disconnect.
Check cable connections and network settings where applicable.
NO CONNECTION
W/UNIT 1
The Liebert® iCOM™ I/O board assigned as U2U address number 1 has lost communication with the group.
Make sure all units are powered on at the disconnect.
Check cable connections and network settings where applicable.
BMS DISCONNECT
The BMS/BAS has not completed a handshake within the time defined by the BMS/BAS.
Verify monitoring connections and communication to the BMS/BAS panel.
UNIT CODE MISSING The factory unit code must be confirmed, saved and executed.
UNIT CODE MISMATCH The factory unit code must be confirmed, saved and executed.
AMBIENT SENSOR
FAILURE
The outdoor temperature / humidity sensor used on the air economizer unit has become disconnected or is no longer
working properly.
CAN GC 1 or 2 COMM ERR See Table 4.3 on page88 .
CAN PB COMM ERR See Table 4.4 on page90 .
CAN EEV 1 or 2 COMM
ERR
See Table 4.6 on page91
COMP 1 or 2 OVERLOAD See Table 4.5 on page91 .
LOW PRESS CIRCUIT 1 or
2
See Table 4.5 on page91 .
Table 2.2 Events That Clear without Acknowledgment
2 User Operation
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Vertiv™ Liebert® iCOM™Installer/User Guide