Vertiv Liebert iCOM - Page 99

Event Description
COMP 1A SHORT CYCLE
Compressor exceeded the maximum number of stop/starts allowed in the time period.
COMP 1B SHORT CYCLE
COMP 2A SHORT CYCLE
COMP 2B SHORT CYCLE
CIRCUIT 1 HIGH PRESS
Circuit 1 or 2 high discharge pressure.
CIRCUIT 2 HIGH PRESS
CIRCUIT 1 LOW PRESS
Circuit 1 or 2 low suction pressure.
CIRCUIT 2 LOW PRESS
Table 4.5 Events Specific to Liebert® DSE Compressor (continued)
Table 4.6 below , describes events available with the EEV alarm board.
Event Description
EEV 1 or 2
Communication Error
Liebert® iCOM™ lost communication with the EEV board.
• The compressor(s) shut-off and the unit exits Liebert® EconoPhase while the error is active.
EEV 1 or 2 Sensor
Error
Liebert® iCOM™ lost communication with a connected EEV sensor.
• If a sensor value is not reported for 10 seconds, a sensor error occurs. The compressor(s) shut-off and the unit
exits Liebert® EconoPhase while the error is active.
• If 4 sensor errors occur in a 30-minute window, the Sensor Error event remains active until reset manually.
EEV 1 or 2 Motor Error
Problem with the stepper motor.
• The corresponding compressor(s) are disabled until the condition is cleared.
EEV 1 or 2 Low
Superheat
Superheat dropped below 1°F (–17°C) for 1 minute.
• The corresponding compressor(s) are powered-off for the minimum “off time” while the event is active.
EEV 1 or 2 High
discharge temp
Discharge temperature exceeded the high-temperature threshold.
• The corresponding compressor(s) are powered-off until the alarm is manually reset.
EEV 1 or 2 Feedback
Failure
The EEV control monitors feedback from the compressor contactor. Feedback Failure is reported if the contactor is de-energized
while the EEV is operating for superheat control.
• The corresponding compressor is disabled until the alarm is manually reset.
EEV 1 or 2 Battery
Warning
The EEV control tests the EEV battery back-up (if included), and indicates low battery life.
• If this warning remains active for 24 hours, a battery failure event occurs and the circuit is locked-out.
EEV 1 or 2 Battery
Failure
The EEV control tests the EEV battery backup (if included), and indicates battery failure.
• The corresponding EEV circuit is locked-out until the failure code is reset. See Resetting EEV Battery Failure
Counter on page170 .
EEV 1 or 2 Driver
Failure
EEV unexpectedly closes with the compressor(s) powered on.
• The corresponding compressor is disabled until the alarm is reset manually.
Comp 1 or 2 High
Superheat
Superheat is above the high threshold for 30 minutes.
• The compressor is powered-off for the minimum off time.
Table 4.6 Events Specific to EEV Alarm Board
4 Managing Events: Alarms,WarningsandMessages
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Vertiv™ Liebert® iCOM™Installer/User Guide