Discharge Temperature Sensor Fault; Evaporator Exv Motor Error; Power Loss While Running; Failed Pumpdown - Daikin Pathfinder AWV Series Installation, Operation And Maintenance Manual

Discharge Temperature Sensor Fault

Alarm: Discharge Temperature Sensor Fault
Displayed Text: Cn DiscTempSenFault
Trigger: Trigger if any of the following are true for at
least 1 second:
• Sensor input value < 340 Ω
• Sensor input value > 300 kΩ
• Sensor reliability reported by control
system ≠ 'No Fault'
Action Taken: Normal shutdown of circuit and lock out
from running
Reset: This alarm can be cleared manually via
the keypad or BAS command if sensor
input value is 340 Ω to 300 kΩ and sensor
reliability = 'No Fault' for at least 5 seconds.

Evaporator EXV Motor Error

Alarm: Evaporator EXV Motor Error
Displayed Text: Cn EvapExvMotorErr
Trigger: If EEXV Type is set to E6V and driver
in Evaporator EXV module reports EXV
motor error. Driver A is for circuit #1 and
Driver B is for circuit #2.
Action Taken: Rapid shutdown of circuit and lock out
from running
Reset: This alarm can be cleared manually via
the keypad or BAS command if EXV motor
error is no longer being reported.

Power Loss While Running

Alarm: Power Loss While Running
Displayed Text: Cn PwrLossWhileRun
Trigger: Circuit running when controller loses power
Action Taken: None
Reset: N/A

Failed Pumpdown

Alarm: Failed Pumpdown
Displayed Text: Cn Pumpdown Fail
Trigger: Circuit state = pumpdown for time >
Pumpdown Time set point
Action Taken: Shut down circuit
Reset: N/A
IOM 1242-2 • PATHFINDER MODEL AWV CHILLERS
®
Economizer Pressure Sensor Fault
Alarm: Economizer Pressure Sensor Fault
Displayed Text: Cn EconPressSenFault
Trigger: The following conditions must be true to
trigger:
• Economizer Configuration set point
= Yes
• 8 seconds have passed since UC
booted up
• Communication with EVD module
is OK
• Value reported is more than 3083
kPa or less than 3.85 kPa for at least
1 second.
Action Taken: Economizer forced to closed state and will
remain closed.
Reset: This alarm will automatically clear if value
reported is from 3.85 to 3083 kPa for 5
seconds.
Economizer Temperature Sensor Fault
Alarm: Economizer Temperature Sensor Fault
Displayed Text: Cn EconTempSenFault
Trigger: The following conditions must be true to
trigger:
• Economizer Configuration set point
= Yes
• Communication with EVD module
is OK
• Value reported is more than 150°C
or less than -40°C for at least 1
second
Action Taken: Economizer forced to closed state and will
remain closed.
Reset: This alarm will automatically clear if value
reported is from -40°C to 150°C for 5
seconds.
Economizer EXV Motor Error
Alarm: Economizer EXV Motor Error
Displayed Text: Cn EconExvMotorErr
Trigger: Driver in Economizer EXV module reports
EXV motor error. Driver A is for circuit #1
and Driver B is for circuit #2.
Action Taken: Economizer forced to closed state and will
remain closed.
Reset: Automatically clear when EXV motor error
is not being reported for 5 seconds.
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