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Daikin RXS25E2V1B User Manual

Daikin RXS25E2V1B
232 pages
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SiENBE05-722_A
Service
Manual
Inverter Pair
Floor/Ceiling Suspended Dual Type
BA-Series
[Applied Models]
Inverter Pair: Cooling only
Inverter Pair: Heat Pump

Table of Contents

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Daikin RXS25E2V1B Specifications

General IconGeneral
ModelRXS25E2V1B
CategoryAir Conditioner
ManufacturerDaikin
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Energy Efficiency Ratio (EER)3.21
Energy Efficiency Class (Cooling)A
Energy Efficiency Class (Heating)A
Power Supply220-240V
Weight (Indoor Unit)9 kg
TypeSplit
Seasonal Energy Efficiency Ratio (SEER)6.10
Power Supply (Voltage/Phase/Frequency)220-240V/1/50Hz
RefrigerantR32

Summary

Introduction

Safety Cautions

Details safety precautions to be observed before and during repair work.

Used Icons

Explains the meaning of icons used throughout the manual for specific information.

List of Functions

Functions

Lists and describes the various functions available for the air conditioner.

Specifications

Specifications

Provides detailed technical specifications for the air conditioner models.

Cooling Only

Specifies technical details for cooling-only operation of the units.

Heat Pump

Specifies technical details for heat pump operation of the units.

Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram

Illustrates the connector layouts and identification for indoor and outdoor unit PCBs.

Indoor Unit

Details connectors for indoor unit PCBs: Control, Power Supply, Display, and Signal Receiver.

Outdoor Unit

Details connectors for outdoor unit PCBs: Filter and Main PCBs.

Function and Control

Main Functions

Describes the primary functions and operational principles of the air conditioner.

Temperature Control

Explains the mechanism and logic behind the temperature control system.

Frequency Principle

Details the inverter principle and compressor frequency control for optimal performance.

Automatic Operation

Explains the automatic mode for cooling/heating based on room temperature.

Control Specification

Outlines the system's control specifications and operational logic.

Frequency Control

Details the process of determining and controlling compressor frequency.

Malfunctions

Covers sensor malfunctions, overcurrent, and overload detection for troubleshooting.

Operation Manual

Operation Manual

Provides comprehensive instructions for operating the air conditioner.

Remote Control

Details the functions and operation of the remote control unit.

Auto Dry Cool Heat Fan Operation

Explains how to select and operate different modes like AUTO, DRY, COOL, HEAT, and FAN.

POWERFUL Operation

Describes activating and canceling the POWERFUL operation for maximum capacity.

HOME LEAVE Operation

Explains how to set and use the HOME LEAVE operation for preferred settings.

TIMER Operation

Details the use of ON and OFF timer functions for automatic operation scheduling.

Service Diagnosis

Caution for Diagnosis

Provides essential safety cautions and guidelines before performing diagnostics.

Troubleshooting

Lists error codes, symptoms, and troubleshooting steps for diagnosing issues.

Error Codes and Description

Lists all system error codes, their meanings, and corresponding troubleshooting pages.

Indoor Unit PCB Abnormality

Details troubleshooting for indoor unit PCB abnormalities (Error A1).

Freeze-up Protection Control or Heating Peak-cut Control

Explains troubleshooting for freeze-up protection and heating peak-cut control (Error A5).

Fan Motor (AC Motor) or Related Abnormality

Guides troubleshooting for fan motor abnormalities (Error A6).

Thermistor or Related Abnormality (Indoor Unit)

Details troubleshooting for indoor unit thermistor abnormalities (Errors C4, C9).

Signal Transmission Error (between Indoor Unit and Outdoor Unit)

Provides troubleshooting for signal transmission errors between units (Error U4).

Outdoor Unit PCB Abnormality

Details troubleshooting for outdoor unit PCB abnormalities (Error E1).

OL Activation (Compressor Overload)

Explains troubleshooting for OL activation or compressor overload (Error E5).

Compressor Lock

Guides troubleshooting for compressor lock issues (Error E6).

Input Overcurrent Detection

Explains troubleshooting for input overcurrent detection (Error E8).

Four Way Valve Abnormality

Guides troubleshooting for four way valve abnormalities (Error EA).

Discharge Pipe Temperature Control

Details troubleshooting for discharge pipe temperature control issues (Error F3).

High Pressure Control in Cooling

Explains troubleshooting for high pressure control in cooling mode (Error F6).

Refrigerant Shortage

Details troubleshooting for refrigerant shortage issues (Error U0).

Check

Provides procedures for checking specific components and systems.

How to Check

Details general methods for checking various parts and systems.

Removal Procedure

Indoor Unit

Provides step-by-step instructions for removing parts of the indoor unit.

Removal of Electrical Box / PCB

Provides instructions for removing the electrical box and PCB from the indoor unit.

Removal of Indoor Heat Exchanger

Explains how to remove the indoor heat exchanger.

Outdoor Unit - RK(X)S25/35E2V1B

Provides removal procedures for the RK(X)S25/35E2V1B outdoor unit.

Removal of Outer Panels / Fan Motor

Details how to remove outer panels and the fan motor of the outdoor unit.

Removal of Electrical Box

Explains how to remove the electrical box from the outdoor unit.

Removal of PCB

Provides instructions for removing the main PCB from the outdoor unit.

Removal of Four Way Valve

Provides instructions for removing the four-way valve.

Removal of Compressor

Details the procedure for removing the compressor.

Outdoor Unit - RK(X)S25/35G2V1B

Provides removal procedures for the RK(X)S25/35G2V1B outdoor unit.

Removal of Outer Panels / Fan Motor

Details how to remove outer panels and the fan motor of the outdoor unit.

Removal of Electrical Box

Explains how to remove the electrical box from the outdoor unit.

Removal of PCB

Provides instructions for removing the main PCB from the outdoor unit.

Removal of Four Way Valve

Provides instructions for removing the four-way valve.

Removal of Compressor

Details the procedure for removing the compressor.

Outdoor Unit - RK(X)S25/35G2V1B9

Provides removal procedures for the RK(X)S25/35G2V1B9 outdoor unit.

Removal of Outer Panels / Fan Motor

Details how to remove outer panels and the fan motor of the outdoor unit.

Removal of Electrical Box

Explains how to remove the electrical box from the outdoor unit.

Removal of PCB

Provides instructions for removing the main PCB from the outdoor unit.

Removal of Four Way Valve

Provides instructions for removing the four-way valve.

Removal of Compressor

Details the procedure for removing the compressor.

Trial Operation and Field Settings

Trial Operation

Explains the procedure for performing trial operation of the air conditioner.

Field Settings

Covers various field settings required for proper operation and configuration.

Facility Setting Jumper (cooling at low outdoor temperature)

Describes the facility setting jumper for expanding operation range to low temperatures.

Application of Silicon Grease to a Power Transistor and a Diode Bridge

Provides instructions for applying silicon grease for heat radiation on PCB components.

Appendix

Piping Diagrams

Contains diagrams illustrating the refrigerant piping connections for indoor and outdoor units.

Wiring Diagrams

Contains wiring diagrams for the indoor and outdoor units.

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