IOM 1322 • WATER-COOLED SCROLL COMPRESSOR 56 www.DaikinApplied.com
Alarm description (as shown on screen):
Phase/Voltage Cir N
Trigger: PVM input is low and Phase Voltage set point =
enable.
Action Taken: Rapid stop circuit
Reset: Auto reset when PVM input is high
Alarm description (as shown on screen): Ground Fault Cir N
Trigger: GFP input is low and Ground Fault set point = enable.
Action Taken: Rapid stop circuit
Reset: This alarm can be cleared manually via the keypad.
Alarm description (as shown on screen):
Low OAT Start Fail N
Trigger: Circuit has failed three low OAT start attempts
Action Taken: Rapid stop circuit
Reset: This alarm can be cleared manually via the keypad.
In order to avoid low evaporator pressure alarms at startup
view “Low Ambient Start (WaterCooled = NO)” on page 68
Alarm description (as shown on screen):
Evap Water Freeze
Trigger: Evaporator LWT drops below evaporator freeze
protect set point AND Unit State = Auto
Action Taken: Rapid stop all circuits
Reset: This alarm can be cleared manually via the keypad
or via the BAS clear alarm signal, but only if the alarm trigger
conditions no longer exist.
Leaving Evaporator Water Temperature
Alarm description (as shown on screen):
Evap LWT Sens Fault
Trigger: Sensor shorted or open
Action Taken: Normal stop all circuits
Reset: This alarm can be cleared manually via the keypad, but
only if the sensor is back in range.
Leaving Condenser Water Temperature
Alarm description (as shown on screen):
CondLWT Sens Fault
Trigger: Sensor shorted or open AND TGZ unit (refrig =
R134a) AND operating in ‘heat’ mode.
Action Taken: Normal stop all circuits
Reset: This alarm can be cleared manually via the keypad, but
only if the sensor is back in range.
Alarm description (as shown on screen):
SuctT Sensor Fail N
Trigger: Sensor shorted or open AND Expansion Valve Type =
Electronic
Action Taken: Rapid stop circuit
Reset: This alarm can be cleared manually via the keypad, but
only if the sensor is back in range.
Alarm description (as shown on screen):
EvapP Sensor Fail N
Trigger: Sensor shorted or open. If failing high (open),
logic has been added that requires the Leaving Evaporator
Temperature to be below 75°F. This will prevent nuisance trips
due to conditions where the evaporator water temperature is
high which could cause false alarms.
Action Taken: Rapid stop circuit
Reset: This alarm can be cleared manually via the keypad, but
only if the sensor is back in range.
Alarm description (as shown on screen):
CondP Sensor Fail N
Trigger: Sensor shorted or open
Action Taken: Rapid stop circuit
Reset: This alarm can be cleared manually via the keypad, but
only if the sensor is back in range.
Condenser Entering or Outdoor Air
Alarm description (as shown on screen): OAT Sensor Fault
Trigger: Sensor shorted or open
Action Taken: Normal stop all circuits
Reset: This alarm can be cleared manually via the keypad, but
only if the sensor is back in range
Alarm description (as shown on screen):
Evap Water Freeze
Trigger: Evaporator LWT drops below evaporator freeze
protect set point AND Unit State = Auto
Action Taken: Rapid stop all circuits
Reset: This alarm can be cleared manually via the keypad
or via the BAS clear alarm signal, but only if the alarm trigger
conditions no longer exist.
To Next Page
Loading...
