Table 13 Alarms Specific To Liebert Mc Condenser - Emerson Liebert iCOM Manual

Table 13 Alarms specific to Liebert MC condenser
Event
GC 1 or 2 Disconnected
GC 1 or 2 Rem Shutdown
GC 1 or 2 Board Fail
GC Pres Sens Fail C1 or C2
GC High Cond Press C1 or C2
GC Low Cond Press C1 or C2
GC 1 or 2 Amb Sens Fail
GC 1 or 2 Amb Temp Limit
GC Temp Sens Fail C1 or C2
GC High Cond Temp C1 or C2
GC Low Cond Temp C1 or C2
GC 1 or 2 Fan 1
through 4 FAIL
GC 1 or 2 TVSS Failure
GC 1 or 2 Comms Error
® ®
Liebert iCOM for Liebert DSE
Description
The Liebert iCOM board cannot establish communication with the Liebert MC
Board for 10 seconds consecutively, the "GCx Disconnected" alarm will be
annunciated for the corresponding circuit. No further action is taken by the
Liebert iCOM. Once the Liebert iCOM re-establishes communication with the
Liebert MC board, the event will be reset.
When this alarm occurs, the compressor(s) in that circuit will be turned Off. If
this alarm occurs on the lead circuit, then the lead-lag order of the
compressors/tandem banks will change.
Once the Liebert MC remote shutdown circuit returns to the inactive state
(closed), the event will be reset and the compressors in that circuit may be
turned On again. Normal compressor lead-lag sequence will resume once both
compressors are Off.
Data corruption detected. An unrecoverable fatal system error has occurred
causing a condenser shutdown.
Condenser pressure sensor failure
High condensing pressure
Low condensing pressure
Ambient temperature sensor failure
High / low ambient temperature
Refrigerant liquid line temperature sensor failure
High refrigerant liquid line temperature
Low refrigerant liquid line temperature
The following errors may result from a fan failure alarm. See specific fan
manufacturer's literature for troubleshooting information.
VSD high link current
VSD drive error
VSD earth to ground fault
VSD electronics heat sink thermal overload
VSD hall failure
VSD IGBT failure
VSD line fault
VSD motor locked
VSD motor thermal overload
VSD phase failure
VSD-specific uncategorized alarm detected
VSD electronics high-temperature condition
VSD high link voltage
VSD low link voltage
RS-485 communications failure
TVSS alarm
The Liebert iCOM cannot establish communication with GC board.
™
60
Operation