Daikin EWYQ040BAW - User Manual

Other manuals for Daikin EWYQ040BAW

Service Manual228 pages

Questions and Answers

E
Evan FreemanAug 20, 2025
What to do if Daikin EWYQ040BAW Chiller shows error code E3?
- D
  Donna WalkerAug 20, 2025
  If your Daikin Chiller displays error code E3, it indicates a high-pressure error, possibly due to air in the circuit. Ensure the circuit is filled with water and that there is no air inside. Also, confirm that water flow is possible by opening all valves and verifying the water filter isn't blocked. Additionally, ensure all refrigerant stop valves are open. If the issue persists, contact your local dealer.
J
John RobinsonAug 22, 2025
How to fix Daikin EWYQ040BAW Chiller error code U1?
- I
  ihoffmanAug 22, 2025
  Daikin Chiller error code U1 means the phases of the power to the unit are reversed. To fix this, exchange two of the three phases (L1, L2, L3) to make a positive phase connection.
G
gracehodgeAug 25, 2025
What to do if Daikin EWYQ040BAW displays error code A6?
- J
  Jared BrownAug 25, 2025
  Daikin Chiller error code A6 indicates a malfunction in the water circuit. Ensure water flow is possible by opening all valves in the circuit and force clean water through the unit.
S
Scott MckenzieAug 26, 2025
What does Daikin EWYQ040BAW Chiller error code AE mean?
- B
  bergerjosephAug 27, 2025
  Daikin Chiller error code AE is a water system warning. To address this, check the filter, ensure all valves are open, and contact your local dealer if the problem continues.
W
Walter GarrisonAug 28, 2025
What causes Daikin Chiller error code U2?
- M
  maria24Aug 28, 2025
  Daikin Chiller error code U2 indicates a power supply error. Check the wiring connections and contact your local dealer.
A
Alicia BrownAug 30, 2025
What does Daikin Chiller error code A9 mean?
- R
  ruizmorganAug 30, 2025
  Daikin Chiller error code A9 indicates an R410A expansion valve error. Check the wiring connections and contact your local dealer.
M
Michael AllenSep 1, 2025
What does Daikin EWYQ040BAW Chiller error code C4 mean?
- D
  Denise SpencerSep 1, 2025
  Daikin Chiller error code C4 indicates an R410A liquid thermistor error. Check the wiring connections and contact your local dealer.
K
Kevin WatkinsSep 3, 2025
What to do for Daikin EWYQ040BAW Chiller error code J7?
- M
  Morgan MoralesSep 3, 2025
  Daikin Chiller error code J7 indicates an R410A suction thermistor error. Check the wiring connections and contact your local dealer.
J
Joshua HansonSep 5, 2025
What does Daikin Chiller error code C9 mean?
- M
  Michael FosterSep 5, 2025
  Daikin Chiller error code C9 indicates a returning water thermistor error. Check the wiring connections and contact your local dealer.
K
Kimberly BrockSep 7, 2025
What does Daikin Chiller error code CA mean?
- H
  Hayley DeckerSep 7, 2025
  Daikin Chiller error code CA is a heating leaving water thermistor error. Check the wiring connections and contact your local dealer.

Summary

INTRODUCTION

Warnings and Symbols Explained

Explains the meaning of warnings and symbols used throughout the manual.

INSTALLATION PRECAUTIONS

General Safety Precautions

Covers electrical shock, high temperature, and animal hazards during installation.

INSTALLATION PREPARATION

Installation Location Verification

Details criteria for selecting an appropriate installation site.

Location Requirements and Precautions

Water Piping Preparation Steps

Outlines necessary steps and precautions for preparing water piping connections.

Water Flow and Piping Specifications

Details water flow, piping diameter, minimum flow, and filter recommendations.

Electrical Wiring Preparation Guidelines

Instructions and warnings for preparing electrical wiring work.

INSTALLING THE CHILLER

Unit Unpacking and Handling Procedures

Unit Placement and Foundation

Steps for placing the unit on its final foundation, ensuring it is level and stable.

Foundation Securing and Panel Access

WATER PIPING WORK

Water Pipe Connection and Insulation

Details connecting water pipes and the importance of insulation.

Water Volume and Expansion Vessel Checks

Electrical Wiring Connections

Prepares and connects electrical wiring according to diagrams and regulations.

Freeze Protection for Water Circuit

Discusses heater tape and glycol use for freeze protection.

FILLING THE WATER CIRCUIT

Water Circuit Filling Procedure

ELECTRICAL WIRING CONNECTIONS

Field Wiring Overview and Cable Selection

Explains field wiring requirements and specifies cable selection criteria.

Wiring Routing Guidelines

Remote Controller Installation Procedure

Procedures for installing the remote controller, including wiring and mounting.

COMMISSIONING THE CHILLER

Installation Completion Verification

Checklist to ensure all installation steps and checks are completed before startup.

Unit Configuration and Field Settings

Steps to configure unit settings via field settings on the outdoor module.

Final Air Purging Procedure

Confirming Set Modes and Field Settings

DETAILED DESCRIPTION OF FIELD SETTINGS

[2] Automatic Setback Functionality

[3] Weather Dependent Set Point Configuration

Setting up automatic temperature adjustment based on outdoor conditions.

[8-04] Freeze-Up Prevention Settings

Setting levels for preventing freeze-up in the water circuit.

[9] Automatic Temperature Compensation

[A-04] Glycol Concentration Setting

[E-04] Pump Only Operation for Air Purge

FINAL CHECK AND TEST RUN

Final Installation Checks

Final checks for installation, panels, and safety before unit startup.

Unit Test Run Procedure

Procedures for performing a test run to verify correct operation.

Heating;Cooling Test Operation

Steps to test heating and cooling operations and resolve errors.

HANDOVER TO THE USER

User Handover Process Steps

SPACE HEATING OPERATION

Room Temperature Control for Heating

Leaving Water Temperature Control for Heating

Weather Dependent Set Point Operation

Automatic heating temperature adjustment based on outdoor conditions.

OTHER OPERATION MODES

Start-up and Defrost Operations

CONTROLLER SETUP

Setting the Clock and Day of Week

SPACE COOLING OPERATION

Room Temperature Control for Cooling

Leaving Water Temperature Control for Cooling

PROGRAMMING AND CONSULTING SCHEDULE TIMER

Getting Started with Schedule Timer

Programming Space Heating and Cooling

Step-by-step guide to programming cooling and heating schedules.

FIELD SETTINGS

Procedure for Modifying Field Settings

Step-by-step guide to entering and modifying field settings.

FIELD SETTINGS TABLE

Remote Control & Basic Setup Settings

Setback, Weather Dependent & Option Settings

MAINTENANCE

Recommended Maintenance Activities

Standstill Precautions and Procedures

TROUBLESHOOTING

Common Issues and Corrective Actions

Troubleshooting guide for common problems like display issues or schedule timer errors.

ERROR CODES

Error Code Reference Guide

Lists error codes, their causes, and corrective actions.

Summary

INTRODUCTION

Warnings and Symbols Explained

Explains the meaning of warnings and symbols used throughout the manual.

INSTALLATION PRECAUTIONS

General Safety Precautions

Covers electrical shock, high temperature, and animal hazards during installation.

INSTALLATION PREPARATION

Installation Location Verification

Details criteria for selecting an appropriate installation site.

Location Requirements and Precautions

Water Piping Preparation Steps

Outlines necessary steps and precautions for preparing water piping connections.

Water Flow and Piping Specifications

Details water flow, piping diameter, minimum flow, and filter recommendations.

Electrical Wiring Preparation Guidelines

Instructions and warnings for preparing electrical wiring work.

INSTALLING THE CHILLER

Unit Unpacking and Handling Procedures

Unit Placement and Foundation

Steps for placing the unit on its final foundation, ensuring it is level and stable.

Foundation Securing and Panel Access

WATER PIPING WORK

Water Pipe Connection and Insulation

Details connecting water pipes and the importance of insulation.

Water Volume and Expansion Vessel Checks

Electrical Wiring Connections

Prepares and connects electrical wiring according to diagrams and regulations.

Freeze Protection for Water Circuit

Discusses heater tape and glycol use for freeze protection.

FILLING THE WATER CIRCUIT

Water Circuit Filling Procedure

ELECTRICAL WIRING CONNECTIONS

Field Wiring Overview and Cable Selection

Explains field wiring requirements and specifies cable selection criteria.

Wiring Routing Guidelines

Remote Controller Installation Procedure

Procedures for installing the remote controller, including wiring and mounting.

COMMISSIONING THE CHILLER

Installation Completion Verification

Checklist to ensure all installation steps and checks are completed before startup.

Unit Configuration and Field Settings

Steps to configure unit settings via field settings on the outdoor module.

Final Air Purging Procedure

Confirming Set Modes and Field Settings

DETAILED DESCRIPTION OF FIELD SETTINGS

[2] Automatic Setback Functionality

[3] Weather Dependent Set Point Configuration

Setting up automatic temperature adjustment based on outdoor conditions.

[8-04] Freeze-Up Prevention Settings

Setting levels for preventing freeze-up in the water circuit.

[9] Automatic Temperature Compensation

[A-04] Glycol Concentration Setting

[E-04] Pump Only Operation for Air Purge

FINAL CHECK AND TEST RUN

Final Installation Checks

Final checks for installation, panels, and safety before unit startup.

Unit Test Run Procedure

Procedures for performing a test run to verify correct operation.

Heating;Cooling Test Operation

Steps to test heating and cooling operations and resolve errors.

HANDOVER TO THE USER

User Handover Process Steps

SPACE HEATING OPERATION

Room Temperature Control for Heating

Leaving Water Temperature Control for Heating

Weather Dependent Set Point Operation

Automatic heating temperature adjustment based on outdoor conditions.

OTHER OPERATION MODES

Start-up and Defrost Operations

CONTROLLER SETUP

Setting the Clock and Day of Week

SPACE COOLING OPERATION

Room Temperature Control for Cooling

Leaving Water Temperature Control for Cooling

PROGRAMMING AND CONSULTING SCHEDULE TIMER

Getting Started with Schedule Timer

Programming Space Heating and Cooling

Step-by-step guide to programming cooling and heating schedules.

FIELD SETTINGS

Procedure for Modifying Field Settings

Step-by-step guide to entering and modifying field settings.

FIELD SETTINGS TABLE

Remote Control & Basic Setup Settings

Setback, Weather Dependent & Option Settings

MAINTENANCE

Recommended Maintenance Activities

Standstill Precautions and Procedures

TROUBLESHOOTING

Common Issues and Corrective Actions

Troubleshooting guide for common problems like display issues or schedule timer errors.

ERROR CODES

Error Code Reference Guide

Lists error codes, their causes, and corrective actions.

Daikin EWYQ040BAW Specifications

General

Brand	Daikin
Model	EWYQ040BAW
Category	Chiller
Language	English

Related product manuals

Daikin EWYQ040BAW - User Manual

Table of Contents

Other manuals for Daikin EWYQ040BAW

Questions and Answers

Summary

INTRODUCTION

Warnings and Symbols Explained

INSTALLATION PRECAUTIONS

General Safety Precautions

INSTALLATION PREPARATION

Installation Location Verification

Location Requirements and Precautions

Water Piping Preparation Steps

Water Flow and Piping Specifications

Electrical Wiring Preparation Guidelines

INSTALLING THE CHILLER

Unit Unpacking and Handling Procedures

Unit Placement and Foundation

Foundation Securing and Panel Access

WATER PIPING WORK

Water Pipe Connection and Insulation

Water Volume and Expansion Vessel Checks

Electrical Wiring Connections

Freeze Protection for Water Circuit

FILLING THE WATER CIRCUIT

Water Circuit Filling Procedure

ELECTRICAL WIRING CONNECTIONS

Field Wiring Overview and Cable Selection

Wiring Routing Guidelines

Remote Controller Installation Procedure

COMMISSIONING THE CHILLER

Installation Completion Verification

Unit Configuration and Field Settings

Final Air Purging Procedure

Confirming Set Modes and Field Settings

DETAILED DESCRIPTION OF FIELD SETTINGS

[2] Automatic Setback Functionality

[3] Weather Dependent Set Point Configuration

[8-04] Freeze-Up Prevention Settings

[9] Automatic Temperature Compensation

[A-04] Glycol Concentration Setting

[E-04] Pump Only Operation for Air Purge

FINAL CHECK AND TEST RUN

Final Installation Checks

Unit Test Run Procedure

Heating;Cooling Test Operation

HANDOVER TO THE USER

User Handover Process Steps

SPACE HEATING OPERATION

Room Temperature Control for Heating

Leaving Water Temperature Control for Heating

Weather Dependent Set Point Operation

OTHER OPERATION MODES

Start-up and Defrost Operations

CONTROLLER SETUP

Setting the Clock and Day of Week

SPACE COOLING OPERATION

Room Temperature Control for Cooling

Leaving Water Temperature Control for Cooling

PROGRAMMING AND CONSULTING SCHEDULE TIMER

Getting Started with Schedule Timer

Programming Space Heating and Cooling

FIELD SETTINGS

Procedure for Modifying Field Settings

FIELD SETTINGS TABLE

Remote Control & Basic Setup Settings

Setback, Weather Dependent & Option Settings

MAINTENANCE

Recommended Maintenance Activities

Standstill Precautions and Procedures

TROUBLESHOOTING

Common Issues and Corrective Actions

ERROR CODES

Error Code Reference Guide

Summary

INTRODUCTION

Warnings and Symbols Explained

INSTALLATION PRECAUTIONS

General Safety Precautions

INSTALLATION PREPARATION