Vertiv Liebert XDC User Manual

• NODEX CONDENSATION DETEC—Activated when condensation is detected on a smart
module at CAN node ID X, where X is a value ranging from 81 to 100. This alarm resets when
condensate is no longer detected. The main power must be cycled off to remove the 4°F (2.2°C)
offset value.
• NODEX FAN FAILURE—Activated when a fan failure occurs on a smart module at CAN node
ID X, where X is a value ranging from 81 to 100. The alarm will rest when the fan returns to
normal operation.
• NODEX LOCAL SHUT DOWN—Activated when a smart module at CAN node ID X, where X is a
value ranging from 81 to 100, has been shut down by an external signal. This alarm will reset
when the remote shutdown input is deactivated.
• NODEX RETURNAIR TEMPLIMT—Activated when the return air temperature (entering air
temperature to the module) exceeds the user-specified return air temperature range on a
smart module at CAN node ID X, where X is a value ranging from 81 to 100. This alarm will reset
when the return air temperature return to with the user-specified range.
• NODEX SENSOR FAILURE—Activated when a smart module at CAN node ID X, where X is a
value ranging from 81 to 100, stops receiving a signal from one or more of its supply air, return
air, or refrigerant temperature sensors. This alarm will reset when signals are detected from the
module's sensors.
• NODEX SUPPLYAIR TEMPLIMT—Activated when the supply air temperature (temperature of
the air leaving the module) exceeds the user-specified supply air temperature range on a
smart module at CAN node ID X, where X is a value ranging from 81 to 100. This alarm will reset
when the return air temperature return to with the user-specified range.
• PUMP SHORT CYCLE—Activated when the Liebert XDC is trying to establish flow (differential
pressure) and is unable to do so. The Liebert XDC will attempt three times to establish flow on a
pump before trying the other pump. The control will keep cycling three times on one pump,
then three times on the other pump until it is able to establish flow (differential pressure). If this
cycling occurs for 30 minutes and the Liebert XDC still does not establish flow, a PUMP SHORT
CYCLE alarm will be present. This alarm will shut down the Liebert XDC. To reset this alarm, the
main power must be cycled.
• RAM/BATTERY FAIL—Activated when the RAM backup battery or the RAM itself has failed.
This requires a hardware replacement.
• SENSOR A FAILURE—Activated when the controls no longer senses a signal from Sensor A.
This alarm will reset when the signal is returned and the alarms has been acknowledged.
• SENSOR B FAILURE— Activated when the controls no longer senses a signal from Sensor B.
This alarm will reset when the signal is returned and the alarm has been acknowledged.
• SMOKE DETECTED—Activated when the Customer Input 1 is configured for “Smoke” and
24VAC is applied to the input. This alarm is reset when the 24VAC is removed.
NOTE: This is not a room smoke detector and is not intended to replace external smoke detectors.
• SUPPLY REFRIGERANT SENSOR FAILURE—Activated when the control no longer senses a
signal from the supply refrigerant sensor. This alarm will reset when the signal is returned.
• TANDEM BANK 1 LP—Activated when the low-pressure switch for Tandem Compressor Bank1
doesn't send the proper signal during normal operation, or during pump-down. This alarm will
reset when the main power is cycled or the Tandem Bank 1 LP Code variable in the Service
Diagnostics menu is reset to 0.
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Vertiv Liebert XDC Specifications

General

Brand	Vertiv
Model	Liebert XDC
Category	Freezer
Language	English