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Daikin RXYQ144 User Manual

Daikin RXYQ144
273 pages
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SiUS39 - 601
RXYQ72, 96, 144, 168, 192MTJU
R-410A Heat Pump 60Hz
RXYQ72MTJU RXYQ96MTJU
RXYQ144MTJU RXYQ168MTJU RXYQ192MTJU

Table of Contents

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Daikin RXYQ144 Specifications

General IconGeneral
BrandDaikin
ModelRXYQ144
CategoryAir Conditioner
LanguageEnglish

Summary

Part 1 General Information

Model Names of Indoor/Outdoor Units

Lists various indoor and outdoor unit models and their specifications.

External Appearance

Shows the physical appearance of different indoor and outdoor unit types.

Model Selection

Guides on selecting appropriate indoor units for outdoor units based on capacity.

Part 2 Specifications

Specifications

Detailed technical specifications for outdoor units.

Indoor Units

Detailed technical specifications for various indoor unit types.

Part 3 Refrigerant Circuit

Refrigerant Circuit

Detailed diagram showing the refrigerant circuit for RXYQ72M and 96M models.

Functional Parts Layout

Illustrates the physical arrangement of functional parts within the outdoor unit.

Refrigerant Flow for Each Operation Mode

Illustrates refrigerant flow paths during Cooling, Heating, and Defrost operations.

Part 4 Function

Operation Mode

Outlines the various operational modes and transitions of the VRV system.

Basic Control

Details fundamental control mechanisms for compressors and fans.

Special Control

Describes special controls like startup, oil return, and defrost.

Protection Control

Details protection mechanisms against overpressure, low pressure, and thermal issues.

Other Control

Describes outdoor unit rotation, emergency operation, and demand control.

Outline of Control (Indoor Unit)

Outlines drain pump control, thermostat sensor usage, and freeze prevention.

Part 5 Test Operation

Test Operation

Guides on pre-power checks, power-on sequence, and field settings.

Outdoor Unit PC Board Layout

Diagram showing the layout of components and switches on the outdoor unit PC board.

Field Setting

Details how to perform field settings using remote controllers and DIP switches.

Part 6 Troubleshooting

Troubleshooting by Remote Controller

Guides on using remote controller for diagnostics and service modes.

Troubleshooting by Indication on the Remote Controller

Lists common indoor/outdoor unit error codes with causes and steps.

Troubleshooting (OP: Central Remote Controller)

Steps for diagnosing central remote controller PC board defects and communication.

Troubleshooting (OP: Schedule Timer)

Covers transmission, PC board defects, and settings for schedule timers.

Troubleshooting (OP: Unified ON/OFF Controller)

Addresses operation lamp blinks and "Under Centralized Control" display issues.

Part 7 Replacement Procedure for INV Compressor, VRV

Replacement Procedure for INV Compressor, VRV (RXYQ72M, 96M)

Step-by-step guide for replacing the inverter compressor in VRV units.

Part 8 Appendix

Piping Diagrams

Illustrates refrigerant piping configuration for outdoor and indoor units.

Wiring Diagrams for Reference

Provides detailed wiring diagrams for outdoor and indoor units.

List of Electrical and Functional Parts

Lists electrical and functional parts with their models for units.

Option List

Lists optional controllers and accessories available for the VRV system.

Example of Connection

Shows examples of system connections including piping and branch kits.

Thermistor Resistance / Temperature Characteristics

Tables relating thermistor resistance values to temperature for diagnostics.

Pressure Sensor Characteristics

Shows the relationship between pressure and output voltage for pressure sensors.

Inverter Power Transistor and Diode Module Replacement

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

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

Precautions for New Refrigerant (R-410A)

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

Service Tools for R-410A

Lists compatible tools and devices required for servicing R-410A systems.

Index

Drawings & Flow Charts

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