Daikin EWYS4004ZXSB2 Handleiding

Daikin Hardwarekoeling EWYS4004ZXSB2

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Pagina 1/54

Public

REV

Date

01/2025

Supersedes

D-EOMZC00204-18_03EN

EWYD/EWYS-4Z - Multipurpose Unit

D-EOMZC00204-18_04EN

OPERATING MANUAL

D-EOMZC00204-18_04EN 2/54 
TABLE OF CONTENTS 
SAFETY CONSIDERATIONS ....................................................................................................................................... 4 
1  General ..................................................................................................................................................................................... 4 
2  Avoid electrocution.................................................................................................................................................................... 4 
3  Safety Devices .......................................................................................................................................................................... 4 
GENERAL DESCRIPTION ............................................................................................................................................ 5 
1  Basic Information ...................................................................................................................................................................... 5 
2  Abbreviations used ................................................................................................................................................................... 5 
3  Controller Operating Limits ....................................................................................................................................................... 5 
4  Controller Architecture .............................................................................................................................................................. 5 
5  Communication Modules........................................................................................................................................................... 6 
USING THE CONTROLLER ......................................................................................................................................... 7 
1  General Recommendation ........................................................................................................................................................ 7 
2  Navigating ................................................................................................................................................................................. 7 
3  Passwords ................................................................................................................................................................................ 8 
4  Editing ...................................................................................................................................................................................... 8 
5  Basic Control System Diagnostic .............................................................................................................................................. 8 
6  Controller maintenance ............................................................................................................................................................. 9 
7  Optional Remote User Interface .............................................................................................................................................. 10 
8  Embedded Web Interface ....................................................................................................................................................... 10 
WORKING WITH THIS UNIT ...................................................................................................................................... 12 
1  Unit Setup ............................................................................................................................................................................... 12 
1.1  Control Source .............................................................................................................................................................. 12 
1.2  Operating Mode ............................................................................................................................................................. 12 
1.3  Temperature Settings .................................................................................................................................................... 13 
1.4  Thermostatic control ...................................................................................................................................................... 13 
1.5  Pumps settings .............................................................................................................................................................. 15 
1.6  Alarm Settings ............................................................................................................................................................... 16 
1.7  Power Conservation ...................................................................................................................................................... 16 
1.7.1  Demand Limit ....................................................................................................................................................... 16 
1.7.2  Current Limit (Optional) ........................................................................................................................................ 16 
1.7.3  Setpoint Reset ..................................................................................................................................................... 17 
1.7.4  Setpoint Reset by OAT Reset .............................................................................................................................. 17 
1.7.5  Setpoint Reset by External 4-20 mA Signal .......................................................................................................... 17 
1.7.6  Setpoint Reset by Evaporator Return Temperature .............................................................................................. 17 
1.8  Date/Time ...................................................................................................................................................................... 17 
1.8.1  Date, Time and UTC Settings ............................................................................................................................... 17 
1.8.2  Quiet Mode Scheduling ........................................................................................................................................ 17 
1.9  Scheduler ...................................................................................................................................................................... 18 
2  Unit/Circuit Start-up................................................................................................................................................................. 18 
2.1  Prepare the unit to start ................................................................................................................................................. 18 
2.1.1  Unit Enable .......................................................................................................................................................... 18 
2.1.2  Switch Enable ...................................................................................................................................................... 19 
2.1.3  Keypad Enable ..................................................................................................................................................... 19 
2.1.4  BMS Enable ......................................................................................................................................................... 19 
2.2  Unit Status ..................................................................................................................................................................... 19 
2.3  Circuits Enable .............................................................................................................................................................. 20 
2.4  Circuit Status ................................................................................................................................................................. 20 
2.5  Circuit Preventions ........................................................................................................................................................ 21 
2.5.1  High Water Temperature Limit ............................................................................................................................. 21 
2.5.2  Low Evaporating Pressure ................................................................................................................................... 21 
2.5.3  High Condensing Pressure................................................................................................................................... 21 
2.5.4  High Vfd Current .................................................................................................................................................. 21 
2.5.5  High Discharge Temperature ............................................................................................................................... 22 
TROUBLESHOOTING ................................................................................................................................................ 23 
1  Unit Alerts ............................................................................................................................................................................... 23 
1.1  Bad Current Limit Input .................................................................................................................................................. 23 
1.2  Bad Demand Limit Input ................................................................................................................................................ 23 
1.3  Bad Leaving Water Temperature Reset Input ................................................................................................................ 24 
1.4  Condenser Pump #1 Failure .......................................................................................................................................... 24 
1.5  Condenser Pump #2 Failure .......................................................................................................................................... 24 
1.6  Energy Meter Communication Fail ................................................................................................................................. 25 
1.7  Evaporator Pump #1 Failure .......................................................................................................................................... 25 
1.8  Evaporator Pump #2 Failure .......................................................................................................................................... 26 
1.9  External Event ............................................................................................................................................................... 26 
1.10  Fan Alarm Module Communication Fail ......................................................................................................................... 26 
1.11  Heat Recovery Entering Water Temperature sensor fault .............................................................................................. 27 
1.12  Heat Recovery Leaving Water Temperature sensor fault ............................................................................................... 27 
1.13  Heat Recovery Water Temperatures inverted ................................................................................................................ 27 
1.14  Rapid Recovery Module Communication Fail ................................................................................................................ 28 
1.15  Switch Box Temperature sensor fault ............................................................................................................................ 28 
1.16  Condenser over heat fault ............................................................................................................................................. 28 