Daikin RXYQ72 User Manual

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

Daikin RXYQ72 Specifications

General

Brand	Daikin
Model	RXYQ72
Category	Air Conditioner
Language	English

Summary

Part 2 Specifications

1. Specifications

Technical specifications for outdoor units, including capacity, dimensions, and electrical data.

1.2 Indoor Units

Technical specifications for various indoor unit types, covering capacity and physical attributes.

Part 3 Refrigerant Circuit

1. Refrigerant Circuit

Details the refrigerant circuit and component functions for specific models.

3. Refrigerant Flow for Each Operation Mode

Explains the refrigerant flow paths across different operational modes.

Part 4 Function

2. Basic Control

Details fundamental control mechanisms including PI control and fan speed regulation.

3. Special Control

Covers specific control functions like startup, oil return, defrost, and stopping operations.

4. Protection Control

Explains various protection mechanisms to prevent system damage and ensure safety.

Part 5 Test Operation

1. Test Operation

Outlines the procedure for initial test operation after installation.

1.2 Operation When Power is Turned On

Explains system behavior during initial power-on and subsequent power cycles.

2. Outdoor Unit PC Board Layout

Details the layout and components of the outdoor unit's PC board.

3. Field Setting

3.2 Field Setting from Outdoor Unit

Part 6 Troubleshooting

1. Troubleshooting by Remote Controller

Procedures for troubleshooting using the remote controller, including self-diagnosis functions.

1.1 The INSPECTION / TEST Button

1.2 Self-diagnosis by Wired Remote Controller

1.3 Self-diagnosis by Wireless Remote Controller

1.4 Operation of The Remote Controller’s Inspection / Test Operation Button

1.5 Remote Controller Service Mode

2. Troubleshooting by Indication on the Remote Controller

Lists and describes error codes displayed on the remote controller and their troubleshooting steps.

2.1 “A0” Indoor Unit: Error of External Protection Device

2.9 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger

2.13 “E1” Outdoor Unit: PC Board Defect

2.16 “E5” Compressor Motor Lock

2.24 “J2” Current Sensor Malfunction

2.41 “UO” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure

2.45 “U4” Malfunction of Transmission Between Indoor Units and Outdoor Units

2.52 “UE” Malfunction of Transmission Between Centralized Controller and Indoor Unit

2.54 “UH” Malfunction of System, Refrigerant System Address Undefined

3. Troubleshooting (OP: Central Remote Controller)

Troubleshooting procedures for central remote controller operations.

3.1 “M1” PC Board Defect

3.2 “M8” Malfunction of Transmission Between Optional Controllers for Centralized Control

4. Troubleshooting (OP: Schedule Timer)

Troubleshooting procedures for schedule timer operations.

4.1 “UE” Malfunction of Transmission Between Central Remote Controller and Indoor Unit

4.5 “MC” Address Duplication, Improper Setting

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

Troubleshooting procedures for unified ON/OFF controller operations.

5.1 Operation Lamp Blinks

5.2 Display “Under Centralized Control” Blinks (Repeats Single Blink)

Part 7 Replacement Procedure for INV Compressor, VRV

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

Provides a step-by-step procedure for replacing the INV compressor and VRV.

1.1 Replacement Procedure

Detailed steps for replacing the INV compressor and VRV unit.

Part 8 Appendix

6. Thermistor Resistance / Temperature Characteristics

7. Pressure Sensor

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

Provides procedures for replacing inverter power transistors and diode modules.

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

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

1.2 Service Tools