Daikin Navigator WWV - Evaporator Water Temperature Inversion Alarm; Emergency Stop Functionality; Unit Ground Fault Protection

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IOM 1264-4
WWW.DAIKINAPPLIED.COM
OPERATION
Evaporator Water Temperatures Inverted
Displayed Text: EvapWaterTempInverted
Trigger: All of the following are true for at least 90 seconds:
Unit is in Run state
Evap EWT < Evap LWT – 1°C
EWT sensor fault not active
LWT sensor fault not active
Action Taken: Normal shutdown unit and lock out unit from
running
Reset: This alarm can be cleared manually via the unit
controller HMI or via BAS command.
Evaporator/Condenser LWT Sensor Fault
Displayed
Text:
Evap LWT SenFault/
Cond LWT SenFault
Trigger: If any of the following occur:
Resistance value is < 340 Ω
Resistance value is > 300k Ω
Reliability value reported for input is anything other
than ‘NoFault’
Action Taken: Rapid shutdown unit and lock out unit from running
Reset: This alarm can be cleared manually via the unit
controller HMI or BAS command if the following
are true:
Resistance value is from 340 Ω to 300k Ω
Reliability value reported for input is ‘NoFault
Evaporator/Condenser EWT Sensor Fault
Displayed Text:
Evap EWT SenFault/
Cond EWT SenFault
Trigger: If any of the following occur:
Resistance value is < 340 Ω
Resistance value is > 300k Ω
Reliability value reported for input is anything other
than ‘NoFault’
Action Taken: Normal shutdown unit and lock out unit from
running
Reset: This alarm can be cleared manually via the unit
controller HMI or BAS command if the following
are true for at least ve seconds:
Resistance value is from 340 Ω to 300k Ω
Reliability value reported for input is ‘NoFault’
External Alarm
Displayed Text: External Alarm
Trigger: Emergency Stop input has been on for at least
3 seconds, then external alarm input is o󰀨 for at
least 1 second
Action Taken: Rapid shutdown unit and lock out unit from running
Reset: Auto clear when external input is on for 5 seconds
Emergency Stop
Displayed Text: Emergency Stop Switch
Trigger: Emergency Stop input is o󰀨 for at least 1 second.
Action Taken: Rapid shutdown unit and lock out unit from running
Reset: This alarm can be cleared manually via the Unit
Controller HMI or via BAS command if the emer-
gency switch input is on for 5 seconds.
Unit Ground Fault Protection
Displayed Text: Unit Ground Fault
Trigger: All of the following are true:
Ground Fault Protection Option set point = Yes
Ground Fault Relay input is o󰀨 for 1 second
Action Taken: Rapid shutdown unit and lock out unit from running
Reset: Auto reset when Ground Fault Relay input is on for
5 seconds
Compressor Controller (CC1) Module
Comm Failure
Displayed
Text:
CC1 Mod Comm Fail
Trigger: Communication with the CC1 module has failed.
This means the reliability value reported for the
module is anything other than 0 for at least 3
seconds
Action Taken: Rapid shutdown unit and lock out unit from running
Reset: This alarm can be cleared manually via the unit
controller HMI or BAS command after reliability
value reported for the module is 0 for at least 5
seconds.
Evaporator EXV Module Comm Failure
Displayed
Text:
EEXV1 Mod Comm Fail
Trigger: Communication with the EEXV1 module has
failed. This means the reliability value reported for
the module is anything other than 0 for at least 3
seconds
Action Taken: Rapid shutdown unit and lock out unit from running
Reset: This alarm can be cleared manually via the Unit
Controller HMI or BAS command after reliability
value reported for the module is 0 for at least 5
seconds.
Evaporator/Condenser Pump #1 or #2
Failure
Displayed
Text:
Evap Pump1(or 2)Fault/Cond Pump1(or 2)Fault
Trigger: Unit is congured with primary and backup pumps,
pump #1 (or #2) is running, and the pump control
logic switches to pump #2 and vice versa.
Action Taken: Backup pump is used
Reset: This alarm can be cleared manually via the unit
controller HMI or BAS command