Daikin RXL20G2V1B User Manual

SiENBE04-925_A
Service
Manual
Inverter Pair
Wall Mounted Type G-Series
[Applied Models]
z
Inverter Pair: Heat Pump
SIENBE04-925_A_FRONT.pdf 1 24/02/2011 13:53:43

Daikin RXL20G2V1B Specifications

General

Cooling Capacity	2.0 kW
Inverter	Yes
Refrigerant	R32
Indoor Unit Dimensions (W x H x D)	990 x 298 x 263 mm
Outdoor Unit Dimensions (W x H x D)	845 x 695 x 300 mm
Type	Split System
Power Supply	50 Hz

Summary

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

Diagrams showing connector layouts for indoor and outdoor PCBs.

1.1 Indoor Unit

Wiring diagram and connector details for the indoor unit PCB.

1.2 Outdoor Unit

Wiring diagram and connector details for the outdoor unit PCBs.

Part 4 Function and Control

1. Main Functions

1.1 Frequency Principle

2. Function of Thermistor

3. Control Specification

Part 6 Service Diagnosis

1. Caution for Diagnosis

General cautions before performing diagnostic procedures.

1.1 Troubleshooting with LED

How to use indicator LEDs for troubleshooting.

2. Problem Symptoms and Measures

Lists common problems and their corresponding solutions.

3. Service Check Function

Procedures for using the service check function on the remote control.

3.1 ARC452 Series

Specific service check method for the ARC452 remote control series.

4. Troubleshooting

Guides for diagnosing and resolving malfunctions based on error codes.

4.1 Error Codes and Description

Lists all error codes displayed and their descriptions.

4.2 Indoor Unit PCB Abnormality

Troubleshooting steps for indoor unit PCB issues.

4.3 Freeze-up Protection Control or Heating Peak-cut Control

Diagnosing issues related to freeze-up or heating peak-cut controls.

4.4 Fan Motor (DC Motor) or Related Abnormality

Troubleshooting steps for fan motor malfunctions.

4.5 Thermistor or Related Abnormality (Indoor Unit)

Diagnosing issues with indoor unit thermistors.

4.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit)

Troubleshooting communication errors between indoor and outdoor units.

4.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit)

Diagnosing voltage issues between units.

4.8 Outdoor Unit PCB Abnormality

Troubleshooting steps for outdoor unit PCB failures.

4.9 OL Activation (Compressor Overload)

Diagnosing compressor overload (OL) issues.

4.10 Compressor Lock

Troubleshooting procedures for compressor lock faults.

4.11 DC Fan Lock

Diagnosing DC fan lock errors.

4.12 Input Overcurrent Detection

Troubleshooting input overcurrent detection faults.

4.13 Four Way Valve Abnormality

Diagnosing issues with the four-way valve.

4.14 Discharge Pipe Temperature Control

Troubleshooting discharge pipe temperature control faults.

4.15 High Pressure Control in Cooling

Diagnosing high-pressure control issues during cooling.

4.16 Compressor System Sensor Abnormality

Troubleshooting compressor system sensor abnormalities.

4.17 Position Sensor Abnormality

Diagnosing position sensor abnormalities.

4.18 DC Voltage / Current Sensor Abnormality (20/25 Class)

Troubleshooting DC voltage/current sensor issues for 20/25 class units.

4.19 CT or Related Abnormality (35 Class)

Diagnosing CT or related abnormalities for 35 class units.

4.20 Thermistor or Related Abnormality (Outdoor Unit)

Troubleshooting outdoor unit thermistor abnormalities.

4.21 Electrical Box Temperature Rise

Diagnosing electrical box temperature rise issues.

4.22 Radiation Fin Temperature Rise

Troubleshooting radiation fin temperature rise issues.

4.23 Output Overcurrent Detection

Diagnosing output overcurrent detection faults.

4.24 Refrigerant Shortage

Troubleshooting refrigerant shortage detection.

4.25 Low-voltage Detection or Over-voltage Detection

Diagnosing low-voltage or over-voltage detection faults.

4.26 Signal Transmission Error on Outdoor Unit PCB (35 Class Only)

Troubleshooting signal transmission errors on outdoor unit PCB (35 Class).

5. Check

Procedures for checking components and system functions.

5.1 How to Check

Part 7 Removal Procedure

1. Indoor Unit

1.5 Removal of Electrical Box

1.6 Removal of PCB

1.7 Removal of Indoor Heat Exchanger

1.9 Removal of Fan Motor

2. Outdoor Unit - RXL20G2V1B

2.1 Removal of Outer Panels / Fan Motor

2.2 Removal of Electrical Box

2.5 Removal of PCB

2.8 Removal of Four Way Valve

2.9 Removal of Compressor

3. Outdoor Unit - RXL20G2V1B9

3.1 Removal of Outer Panels / Fan Motor

3.2 Removal of Electrical Box

3.4 Removal of PCB

3.7 Removal of Four Way Valve

3.8 Removal of Compressor

4. Outdoor Unit - RXL25G2V1B

4.1 Removal of Outer Panels

4.2 Removal of Electrical Box

4.3 Removal of PCB

4.6 Removal of Outdoor Fan / Fan Motor

4.8 Removal of Four Way Valve / Electronic Expansion Valve

4.9 Removal of Compressor

5. Outdoor Unit - RXL35G2V1B

5.1 Removal of Outer Panels

5.2 Removal of Outdoor Fan / Fan Motor

5.3 Removal of Electrical Box

5.4 Removal of PCB

5.7 Removal of Four Way Valve

5.8 Removal of Electronic Expansion Valve

5.9 Removal of Compressor

Part 8 Trial Operation and Field Settings

1. Trial Operation

Procedure for conducting trial operation and checks.

2. Field Settings

2.3 Jumper and Switch Settings

Part 9 Appendix

1. Piping Diagrams

1.1 Indoor Unit

1.2 Outdoor Unit

2. Wiring Diagrams

2.1 Indoor Unit

2.2 Outdoor Unit