Figure 9.7 History alarms menu
Alarm
ID
Meaning Possible Cause Handling Method
000 CAN communication failure
Communication circuit
missing or damaged
Check communication circuit. Ignore alarm on
condensers without CAN connections
001 Ethernet communication failure
Ethernet hardware or
connection failure
Ignore alarm, Ethernet connection is not present
002 USB communication failure
USB device or file is
damaged.
Replace USB device or file.
003 Data corruption Memory chip is damaged Replace PCB board
004 System error Internal error Reboot. If reboot fails, consult factory.
005 Remote shutdown
1. Remote shutdown signal
is available
2. TB38 is not connected
For Cause 1, check the remote shutdown signal.
For Cause 2, connect TB38.
006 Shutdown due to EC Fan alarm All fans have failed Consult factory
007 SPD alarm SPD damaged Replace SPD
008 Condenser pressure Sensor 2 failure
Condenser pressure
Sensor 1 damaged
Replace condenser pressure Sensor 1
009 Condenser pressure Sensor 2 failure
Condenser pressure
Sensor 2 damaged
Replace condenser pressure Sensor 2
010 Condenser pressure 1 high alarm
High pressure: Fan failure,
clogged coils.
Low pressure: Loss of
charge
High-pressure alarms: Fix fan and clean coil.
Low-pressure alarms: Check for refrigerant leak.
011 Condenser pressure 2 high alarm
012 Condenser pressure 1 low alarm
013 Condenser pressure 2 low alarm
014
EC Fan speed mode maximum must be overridden due
to condenser pressure 1 high
Condenser pressure 1
high
No action is needed.
Table 9.2 System alarm information
Vertiv | Liebert® MC™ Installer/User Guide | 95
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