Daikin EWAK050CZN Handleiding
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Public
REV
00
Date
04/2026
Supersedes
/
Air to water heat pump units with scroll compressors
EWAK~CZ – EWYK~CZ
Original Instruction
Operating Manual
D-EOMHP02004-26_00EN
D-EOMHP00204-26_00EN- 2/73
1.SAFETY CONSIDERATIONS .......................................................................................................................................5
1.1.General .....................................................................................................................................................................................5
1.2.Before switching the unit ...........................................................................................................................................................5
1.3.Avoid electrocution.................................................................................................................................................................... 5
2.GENERAL DESCRIPTION ............................................................................................................................................6
2.1.Basic Information ......................................................................................................................................................................6
2.2.Abbreviations used ...................................................................................................................................................................6
2.3.Controller Operating Limits .......................................................................................................................................................6
2.4.Controller Architecture ..............................................................................................................................................................7
2.5.Communication Modules........................................................................................................................................................... 7
2.5.1.Modbus RTU ......................................................................................................................................................................8
2.5.2.BACnet MSTP ....................................................................................................................................................................9
2.5.3.BACnet IP........................................................................................................................................................................... 9
3.USING THE CONTROLLER ........................................................................................................................................10
3.1.Navigating ...............................................................................................................................................................................10
3.2.Passwords ..............................................................................................................................................................................11
3.3.Editing ....................................................................................................................................................................................11
3.4.Mobile app HMI .......................................................................................................................................................................11
3.5.Basic Control System Diagnostic ............................................................................................................................................13
3.6.Controller maintenance ...........................................................................................................................................................14
3.7.Optional Remote User Interface ..............................................................................................................................................14
4.WORKING WITH THIS UNIT ......................................................................................................................................15
4.1.Chiller On/Off ..........................................................................................................................................................................15
4.1.1.Keypad On/Off ..................................................................................................................................................................15
4.1.2.Scheduler .........................................................................................................................................................................16
4.2.Silent Mode .............................................................................................................................................................................17
4.2.1.Network On/Off ................................................................................................................................................................. 18
4.2.2.Unit On/Off Switch ............................................................................................................................................................18
4.3.Water Setpoints ......................................................................................................................................................................19
4.4.Unit Mode ...............................................................................................................................................................................20
4.4.1.Heat/Cool set-up...............................................................................................................................................................21
4.4.1.1.Cooling-Heating mode by Digital input .....................................................................................................................22
4.4.1.2.Cooling-Heating mode by Software parameter ........................................................................................................22
4.4.1.3.Heating Only Mode.................................................................................................................................................. 22
4.5.Unit Status ..............................................................................................................................................................................23
4.6.Pumps and Variable Flow .......................................................................................................................................................24
4.6.1.Fixed Speed .....................................................................................................................................................................24
4.6.2.Variable Primary Flow (VPF) ............................................................................................................................................24
4.6.3.DeltaT ...............................................................................................................................................................................25
4.7.Network Control ......................................................................................................................................................................26
4.8.Thermostatic Control ...............................................................................................................................................................27
4.9.External Alarm ........................................................................................................................................................................28
4.10.Unit Capacity ..........................................................................................................................................................................29
4.11.Power Conservation ................................................................................................................................................................30
4.11.1.Demand Limit ...................................................................................................................................................................30
4.11.2.Current Limit .....................................................................................................................................................................31
4.11.3.Setpoint Reset ..................................................................................................................................................................31
4.11.3.1.Setpoint Reset by OAT ............................................................................................................................................32
4.11.3.2.Setpoint Reset by 0-10V signal ............................................................................................................................... 33
4.11.3.3.Setpoint Reset by DT ..............................................................................................................................................34
4.11.3.4.Remote Lwt setpoint ................................................................................................................................................35
4.12.Controller IP Setup.................................................................................................................................................................. 35
4.13.Daikin On Site .........................................................................................................................................................................37
4.14.Date/Time ...............................................................................................................................................................................38
4.15.Master/Slave ...........................................................................................................................................................................39
4.16.Unit Boost ...............................................................................................................................................................................39
4.17.Fan Boost ...............................................................................................................................................................................40
4.18.IO Ext Module .........................................................................................................................................................................40
4.19.Constant Heating Capacity .....................................................................................................................................................41
4.20.Domestic Hot Water ................................................................................................................................................................41
4.20.1.Domestic Hot Water Anti Legionella Cycle ........................................................................................................................43
4.21.Customer Unit Configuration ...................................................................................................................................................43
4.22.Collective Housing ..................................................................................................................................................................44
4.23.Bivalent Operations................................................................................................................................................................. 45
4.24.About Chiller ...........................................................................................................................................................................46
4.25.Generic Controller Operation ..................................................................................................................................................47
4.26.BEG – SG Ready & Energy Monitoring ...................................................................................................................................48
4.27.Unit Locked for Commissioning o for Repair ...........................................................................................................................49
4.27.1.In case of commissioning ................................................................................................................................................. 49
4.27.2.In case of repair ................................................................................................................................................................50
4.27.3.In case of controller replacement ......................................................................................................................................50
4.27.4.In case of old BSP alarm ..................................................................................................................................................50
4.27.5.E-Care – starting of the procedure (user authorization) .....................................................................................................51
D-EOMHP00204-26_00EN- 3/73
5.ALARMS AND TROUBLE SHOOTING .......................................................................................................................52
5.1.Alarms List: Overview .............................................................................................................................................................52
5.2.Unit Alerts ...............................................................................................................................................................................53
5.2.1.UnitExternalEvent - External Event ...................................................................................................................................53
5.2.2.BadDemandLimitInput - Bad Demand Limit Input .............................................................................................................53
5.2.3.BadSetPtOverrideInput - Bad Leaving Water Temperature Reset Input ............................................................................53
5.2.4.EvapPump1Fault - Evaporator Pump #1 Failure ...............................................................................................................54
5.2.5.Anti Leg Cycle Fail - DHW Anti Legionella Cycle Fail ........................................................................................................54
5.3.Unit Pumpdown Alarms .......................................................................................................................................................... 54
5.3.1.UnitOff EvpEntWTempSen - Evaporator Entering Water Temperature (EWT) sensor fault ...............................................54
5.3.2.UnitOffEvpLvgWTempSen - Evaporator Leaving Water Temperature (LWT) sensor fault .................................................55
5.3.3.UnitOffAmbTempSen - Outside Air Temperature sensor fault ...........................................................................................55
5.3.4.UnitOff TimeNotValid ........................................................................................................................................................55
5.3.5.PumpInvMbCommFail– Inverter Pump communication fail ...............................................................................................56
5.3.6.UnitOffTankWatTempSen – Collective Housing Water Temperature (LWT) sensor fault (Heat Pump Only) ..................... 56
5.3.7.UnitOffCoolFanFault – Cooling Fan Fault Alarm ...............................................................................................................56
5.4.Unit Rapid Stop Alarms ...........................................................................................................................................................57
5.4.1.UnitOffEvapWaterFlow - Evaporator Water Flow Loss alarm ............................................................................................57
5.4.2.UnitOffEvapWaterTmpLo - Evaporator Water Temperature Low alarm .............................................................................57
5.4.3.UnitOffExternalAlarm - External alarm ..............................................................................................................................57
5.4.4.UnitOffPOL925CommFail – POL925 communication fail ..................................................................................................58
5.4.5.OptionCtrlrCommFail – Optional board communication fail ...............................................................................................58
5.4.6.UnitOffInvDAECommFail– Compressor/Fan inverter communication fail ..........................................................................59
5.4.7.UnitOffOverHeatAlarm – Water Over Temperature Alarm ................................................................................................. 59
5.4.8.UnitOffDHWAlarm – Domestic Hot Water Alarm ...............................................................................................................59
5.4.9.UnitOffExtFanFault – Extraction Fan Fault ........................................................................................................................60
5.4.10.UnitOffGroundFaultRelayAlarm– Ground Fault Relay Alarm .............................................................................................60
UnitOffLeakDet50CommFail – Compressor Box Leak Detector Communication fail ..................................................................... 60
5.4.11.UnitOffLeakDet51CommFail – Master Electrical Panel Leak Detector Communication fail ................................................61
5.4.12.UnitOffLeakDet52CommFail – Slave Electrical Panel Box Leak Detector Communication fail........................................... 61
5.5.Circuit Pumpdown Stop Alarms ...............................................................................................................................................61
5.5.1.CxCmp1 OffSuctTempSen- Suction Temperature Sensor fault .........................................................................................61
5.5.2.CxCmp1 OffDischTmpSen - Discharge Temperature Sensor fault ....................................................................................62
5.5.3.CxCmp1 OffEconTSen - Economizer Temperature Sensor fault .......................................................................................62
5.6.Circuit Rapid Stop alarms .......................................................................................................................................................63
5.6.1.CxOff LowPrRatio - Low Pressure Ratio Alarm .................................................................................................................63
5.6.2.Cx OffNoPressChgStart - No Pressure Change At Start Alarm .........................................................................................63
5.6.3.CxCmp1 OffEvpPressLo - Low Pressure alarm ................................................................................................................ 64
5.6.4.CxCmp1 OffCndPressHi – High Condensing Pressure alarm ...........................................................................................65
5.6.5.CxCmp1 OffDischTmpHi - High Discharge Temperature Alarm ........................................................................................65
5.6.6.CxCmp1 OffMtrAmpsHi - High Discharge Temperature Alarm ..........................................................................................66
5.6.7.Cx OffStartFailEvpLo - Start Fail for low evaporating pressure.......................................................................................... 66
5.6.8.CxCmp1 EvapPressSen - Evaporating Pressure sensor fault ...........................................................................................67
5.6.9.CxCmp1 CondPressSen - Condensing Pressure sensor fault ...........................................................................................67
5.6.10.CxCmp1 OffEconPSen - Economizer Pressure sensor fault .............................................................................................68
5.6.11.CxCmp1 Off MotorTempHi – High Compressor Casing Temperature ...............................................................................68
5.6.12.Cx FailedPumpdown - Failed Pumpdown procedure......................................................................................................... 69
5.6.13.CxCmp1 OffVfdCommFail – Compressor/Fan inverter communication fail ........................................................................69
5.6.14.CxCmp1 OffVfdCompressorAlm – Compressor inverter alarm ..........................................................................................69
5.6.15.Cx OffVfdFanAlm – Fan inverter alarm .............................................................................................................................70
5.6.16.CxCmp1 OffVfdFault – General compressor/fan inverter Alarm ........................................................................................70
5.6.17.CxCmp1 OffLowDiscSH – DSH too low ............................................................................................................................70
5.6.18.CxCmp1 OffMechPressHi - Mechanical High Pressure Alarm .......................................................................................... 71
5.7.Troubleshooting ......................................................................................................................................................................71
Product specificaties
| Merk: | Daikin |
| Categorie: | Niet gecategoriseerd |
| Model: | EWAK050CZN |
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