Daikin REYQ144 User Manual

REYQ72, 96, 144, 168, 192MTJU
R-410A Heat Recovery 60Hz
REYQ72MTJU REYQ96MTJU REYQ144MTJU
SiUS39 - 602
REYQ168MTJU REYQ192MTJU

Daikin REYQ144 Specifications

General

Model	REYQ144
Category	Air Conditioner
Heating Capacity	16.0 kW
Refrigerant	R-410A
Indoor Unit Compatibility	VRV Indoor Units

Summary

1. Introduction

1.1 Safety Cautions

Covers warnings, cautions, and pictograms for safe repair and product handling.

1.2 PREFACE

Introduces the service manual for the Year 2006 VRV series Heat Recovery System.

Part 1 General Information

1. Model Names of Indoor/Outdoor Units

Lists model names for various indoor units, BS units, and outdoor units.

2. External Appearance

Provides visual representations and names of indoor and outdoor units.

3. Model Selection

Guides on selecting models based on system name, capacity, and connectable units.

Part 2 Specifications

1. Specifications

Details specifications for outdoor units, including capacity, dimensions, and components.

1.1 Outdoor Units

Lists detailed specifications for outdoor units like REYQ72MTJU and REYQ96MTJU.

1.2 Indoor Units

Details specifications for various indoor unit types like cassette and duct.

1.3 BS Units

Provides specifications for BS units, including connection range and capacity.

Part 3 Refrigerant Circuit

1. Refrigerant Circuit

Explains the refrigerant circuit for REYQ72M/96M and BSVQ36/60M units.

2. Functional Parts Layout

Illustrates the layout of key components like solenoid valves and sensors.

3. Refrigerant Flow for Each Operation Mode

Diagrams showing refrigerant flow during cooling and heating operations.

Part 4 Function

1. Function General

Defines symbols and lists operation modes for the system.

2. Basic Control

Explains normal operation, compressor PI control, and fan control.

3. Special Control

Details startup, oil return, defrost, and pressure equalizing controls.

4. Protection Control

Describes protection mechanisms like high pressure, low pressure, and overload protection.

5. Other Control

Covers outdoor unit rotation and emergency operation modes.

6. Outline of Control (Indoor Unit)

Explains indoor unit controls like drain pump and thermostat sensor usage.

Part 5 Test Operation

1. Test Operation

Outlines the procedure for initial test operation after installation.

2. Outdoor Unit PC Board Layout

Identifies components and switches on the outdoor unit PC board.

3. Field Setting

Explains how to perform field settings via remote controller or outdoor unit.

Part 6 Troubleshooting

1. Troubleshooting by Remote Controller

Lists troubleshooting steps using the remote controller's inspection/test functions.

2. Troubleshooting by Indication on the Remote Controller

Details error codes (A0, A1, E3, F3, etc.) and their troubleshooting steps.

3. Troubleshooting (OP: Central Remote Controller)

Troubleshooting for central remote controller issues like PC board defects or transmission.

4. Troubleshooting (OP: Schedule Timer)

Troubleshooting for schedule timer malfunctions related to transmission or PC board.

5. Troubleshooting (OP: Unified ON/OFF Controller)

Troubleshooting for unified ON/OFF controller issues like operation lamp blinks or display errors.

Part 7 Replacement Procedure for INV Compressor, VRV (REYQ72M, 96M)

1. Replacement Procedure for INV Compressor, VRV (REYQ72M, 96M)

Provides a step-by-step guide for replacing the INV compressor.

Part 8 Appendix

1. Piping Diagrams

Shows piping diagrams for outdoor, indoor, and BS units.

2. Wiring Diagrams for Reference

Provides wiring diagrams for outdoor, field, indoor, and BS units.

3. List of Electrical and Functional Parts

Lists electrical and functional parts for outdoor and indoor units with models and symbols.

4. Option List

Lists optional accessories for operation control systems and outdoor units.

5. Example of Connection (R-410A Type)

Illustrates example connections for heat recovery systems and REFNET components.

6. Thermistor Resistance / Temperature Characteristics

Provides resistance/temperature data for various thermistors used in the system.

7. Pressure Sensor

Shows pressure sensor characteristics and voltage output data.

8. Method of Replacing The Inverter’s Power Transistors and Diode Modules

Details the procedure for replacing inverter power transistors and diode modules.

Part 9 Precautions for New Refrigerant (R-410A)

1. Precautions for New Refrigerant (R-410A)

Discusses characteristics, pressure, and composition of R-410A refrigerant.

1.1 Outline

Discusses characteristics, pressure, and composition of R-410A refrigerant.

1.2 Service Tools

Lists required tools and their compatibility for R-410A refrigerant systems.