Daikin EWAD TZ-B Operation Manual

Also see for EWAD TZ: Installation, operation and maintenance Installation, operation and maintenance manual

Contents

Daikin EWAD TZ-B Operation Manual Manual pdf 73 page image

Air and Water cooled inverter chillers and heat pumpEWAD TZ - EWAD TZ B - EWWD VZAir and Water cooled inverter chillersand heat pumpD-EOMZC00105-17ENOperation Manual73/84Check for correct sensors wiring alsoaccording electrical scheme.Reset NotesLocal HMINetworkAuto6.6.6 Economizer EXV Driver Error (A/C unit only)This alarm indicates an abnormal condition of the Economizer EXV Driver.Symptom Cause SolutionCircuit is stopped if the dischargetemperature reach the high limit value.Bell icon is moving on controller’s display.String in the alarm list:Cx EcoEXVDrvErrorString in the alarm log: Cx OffEcoEXVDrvErrorString in the alarm snapshotCx OffEcoEXVDrvErrorHardware Error Contact your service organization to getthe problem solved.Reset NotesLocal HMINetworkAuto6.6.7 Economizer EXV Motor Not Connected (A/C unit only)This alarm indicates an abnormal condition of the Economizer EXV Driver.Symptom Cause SolutionCircuit is stopped if the dischargetemperature reach the high limit value.Bell icon is moving on controller’s display.String in the alarm list:Cx EcoEXVMotorString in the alarm log: Cx EcoEXVMotorString in the alarm snapshotCx EcoEXVMotorValve not connected. Referring to the wiring diagram check if thevalve is correctly connected to the module.Reset NotesLocal HMINetworkAuto6.6.8 Evaporating Pressure sensor faultThis alarm indicates that the evaporating pressure transducer is not operating properly.Symptom Cause SolutionCircuit status is Off.The circuit is stopped.Bell icon is moving on controller’s display.String in the alarm list:CxCmp1 EvapPressSenString in the alarm log: CxCmp1 EvapPressSenString in the alarm snapshotCxCmp1 EvapPressSenSensor is broken. Check for sensor integrity.Check correct sensors operationaccording information about mVolt (mV)range related to pressure values in kPa.Sensor is shorted. Check if sensor is shorted with aresistance measurement.Sensor is not properly connected (open). Check for correct installation of the sensoron refrigerant circuit pipe. The transducermust be able to sense the pressurethrough the valve’s needle.