Daikin Magnitude WME Series Installation, Operation And Maintenance Manual page 48

Table 23: Critical Alarms
Screen Text
Low Evaporator Pressure
High Condenser Pressure
Evaporator Pressure Sensor Fault
Condenser Pressure Sensor Fault
Evaporator Water Flow Loss
Condenser Water Flow Loss
Evaporator Pump Fault
Condenser Pump Fault
Evaporator Freeze Protect
Condenser Freeze Protect
MicroTech OFFLINE Error
MicroTech Configuration Error
VFD Communications Fault
MBC Communications Fault
Low Suction Pressure
High Discharge Pressure
Discharge Temperature High
High Motor Winding Temperature
High Motor Gap Temperature
Max RLA Exceeded
Motor Gap Temperature Sensor Fault
Rotor Pump Temperature Sensor Fault
Motor Winding Temperature Sensor Fault
High Suction Temperature Fault
High Discharge Temperature Fault
VFD Fault
MBC Fault
Table 24: Warning Alarms
Screen Text
Evaporator Pressure Sensor Warning
Condenser Pressure Sensor Warning
Motor Case Temperature Sensor
Warning
Motor Winding Temperature Sensor
Warning
Suction Temperature Sensor Warning
Discharge Temperature Sensor
Warning
Suction Pressure Sensor Warning
Discharge Pressure Sensor Warning
MBC Warning
IOM 1266-2 • MAGNITUDE
Evaporator Pressure (or lowest Suction Pressure if Evaporator Pressure Transducer is detected as bad or disconnected)
is less than Low Evaporator Pressure Alarm Setpoint. Causes: Low or No Evaporator Water Flow. Low refrigerant level in
Condenser Pressure (or Highest Discharge Pressure if Condenser Pressure Transducer is detected as bad or
Evaporator Pressure Transducer and Suction Pressure Transducer(s) are detected as bad or disconnected
Condenser Pressure Transducer and Discharge Pressure Transducer(s) are detected as bad or disconnected
An alarm occurs while Evaporator Flow is not detected. Causes: Loss of evaporator flow, evaporator pump off, evap head
gasket leaking or missing, sensor wiring fault, evaporator flow sensor failure
An alarm occurs while Condenser Flow is not detected. Causes: Loss of condenser flow, condenser pump off, condenser
head gasket leaking or missing, sensor wiring fault, condenser flow sensor failure
Evaporator pump does not see flow for 60 seconds after turning on when evaporator pump control is enabled.
Condenser pump does not see flow for 60 seconds after turning on when condenser pump control is enabled.
Saturated Evaporator Temperature is less than Evaporator Freeze Protection Setpoint while chiller is OFF.
Saturated Condenser Temperature is less than Condenser Freeze Protection Setpoint while chiller is OFF.
Communication between the compressor controller and the VFD are interrupted
Communication between the compressor controller and the MBC are interrupted
Suction Pressure is less than Low Suction Pressure setpoint and Suction Pressure Warning is not active
Discharge pressure > High Discharge Pressure SP. Causes: Low or No Condenser Water Flow
Discharge Pressure is greater than 160 PSI and Discharge Pressure Sensor Warning is not active. Causes: Low or No
One of the motor winding temperatures is greater than 298 F. Causes: Motor stator cooling solenoid not open, rotor cooling
stepper motor not functioning correctly, motor rotor superheat or gain setpoints incorrect (contact factory)
All Motor Winding Temperature Sensors are detected as bad or disconnected
Suction Temperature is greater than 125F and Suction Temperature Sensor Warning is not active
Discharge Temperature is greater than 150F and Discharge Temperature Sensor Warning is not active
Evaporator Pressure Transducer is detected as bad or disconnected but there are valid Suction Pressure Transducer(s)
Condenser Pressure Transducer is detected as bad or disconnected but there are valid Discharge Pressure Transducer(s)
Two of the Motor Winding Temperature Sensors are detected as bad or disconnected
MODEL WME CHILLERS
®
Trigger Condition
evaporator. Incorrect setpoint value for leaving water temperature.
disconnected) is greater than 160 PSI
Causes: Low evaporator water flow rate, low refrigerant in chiller.
Causes: Low condenser water flow rate, low refrigerant in chiller.
The MicroTech on the compressor controller is offline (no comm/power)
The MicroTech on the compressor controller has a configuration error
Condenser Water Flow
Motor Gap Temperature is greater than 130F
VFD Output exceeds 115% of Nameplate RLA Setpoint
Motor Gap Temperature Sensor is detected as bad or disconnected
Rotor Pump Temperature Sensor is detected as bad or disconnected
A Fault occurs from the VFD
A Fault occurs from the MBC
Trigger Condition
detected
detected
Motor Case Temperature Sensor is detected as bad or disconnected
Suction Temperature Sensor is detected as bad or disconnected
Discharge Temperature Sensor is detected as bad or disconnected
Suction Pressure Sensor is detected as bad or disconnected
Discharge Pressure Sensor is detected as bad or disconnected
A Warning occurs from the MBC
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