Daikin Magnitude WME Series - Page 48

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Table 23: Critical Alarms
Screen Text Trigger Condition
Low Evaporator Pressure
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
evaporator. Incorrect setpoint value for leaving water temperature.
High Condenser Pressure
Condenser Pressure (or Highest Discharge Pressure if Condenser Pressure Transducer is detected as bad or
disconnected) is greater than 160 PSI
Evaporator Pressure Sensor Fault Evaporator Pressure Transducer and Suction Pressure Transducer(s) are detected as bad or disconnected
Condenser Pressure Sensor Fault Condenser Pressure Transducer and Discharge Pressure Transducer(s) are detected as bad or disconnected
Evaporator Water Flow Loss
An alarm occurs while Evaporator Flow is not detected. Causes: Loss of evaporator ow, evaporator pump off, evap head
gasket leaking or missing, sensor wiring fault, evaporator ow sensor failure
Condenser Water Flow Loss
An alarm occurs while Condenser Flow is not detected. Causes: Loss of condenser ow, condenser pump off, condenser
head gasket leaking or missing, sensor wiring fault, condenser ow sensor failure
Evaporator Pump Fault Evaporator pump does not see ow for 60 seconds after turning on when evaporator pump control is enabled.
Condenser Pump Fault Condenser pump does not see ow for 60 seconds after turning on when condenser pump control is enabled.
Evaporator Freeze Protect
Saturated Evaporator Temperature is less than Evaporator Freeze Protection Setpoint while chiller is OFF.
Causes: Low evaporator water ow rate, low refrigerant in chiller.
Condenser Freeze Protect
Saturated Condenser Temperature is less than Condenser Freeze Protection Setpoint while chiller is OFF.
Causes: Low condenser water ow rate, low refrigerant in chiller.
MicroTech OFFLINE Error The MicroTech on the compressor controller is ofine (no comm/power)
MicroTech Conguration Error The MicroTech on the compressor controller has a conguration error
VFD Communications Fault Communication between the compressor controller and the VFD are interrupted
MBC Communications Fault Communication between the compressor controller and the MBC are interrupted
Low Suction Pressure Suction Pressure is less than Low Suction Pressure setpoint and Suction Pressure Warning is not active
High Discharge Pressure Discharge pressure > High Discharge Pressure SP. Causes: Low or No Condenser Water Flow
Discharge Temperature High
Discharge Pressure is greater than 160 PSI and Discharge Pressure Sensor Warning is not active. Causes: Low or No
Condenser Water Flow
High Motor Winding Temperature
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)
High Motor Gap Temperature Motor Gap Temperature is greater than 130F
Max RLA Exceeded VFD Output exceeds 115% of Nameplate RLA Setpoint
Motor Gap Temperature Sensor Fault Motor Gap Temperature Sensor is detected as bad or disconnected
Rotor Pump Temperature Sensor Fault Rotor Pump Temperature Sensor is detected as bad or disconnected
Motor Winding Temperature Sensor Fault All Motor Winding Temperature Sensors are detected as bad or disconnected
High Suction Temperature Fault Suction Temperature is greater than 125F and Suction Temperature Sensor Warning is not active
High Discharge Temperature Fault Discharge Temperature is greater than 150F and Discharge Temperature Sensor Warning is not active
VFD Fault A Fault occurs from the VFD
MBC Fault A Fault occurs from the MBC
Table 24: Warning Alarms
Screen Text Trigger Condition
Evaporator Pressure Sensor Warning Evaporator Pressure Transducer is detected as bad or disconnected but there are valid Suction Pressure Transducer(s)
detected
Condenser Pressure Sensor Warning Condenser Pressure Transducer is detected as bad or disconnected but there are valid Discharge Pressure Transducer(s)
detected
Motor Case Temperature Sensor
Warning
Motor Case Temperature Sensor is detected as bad or disconnected
Motor Winding Temperature Sensor
Warning
Two of the Motor Winding Temperature Sensors are detected as bad or disconnected
Suction Temperature Sensor Warning Suction Temperature Sensor is detected as bad or disconnected
Discharge Temperature Sensor
Warning
Discharge Temperature Sensor is detected as bad or disconnected
Suction Pressure Sensor Warning Suction Pressure Sensor is detected as bad or disconnected
Discharge Pressure Sensor Warning Discharge Pressure Sensor is detected as bad or disconnected
MBC Warning A Warning occurs from the MBC