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Daikin RX25JV1B User Manual

Daikin RX25JV1B
116 pages
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Service
Manual
Inverter Pair
Wall Mounted Type J-Series
SiBE041010EA
[Applied Models]
z Inverter Pair : Heat Pump

Table of Contents

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Daikin RX25JV1B Specifications

General IconGeneral
ModelRX25JV1B
CategoryHeat Pump
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Power Supply220-240V, 50Hz
SEER5.5
HSPF3.8

Summary

Introduction

Safety Cautions

Details critical safety precautions for installation, operation, and maintenance.

Used Icons

Explains the meaning of various icons used throughout the manual for clarity.

Part 1 List of Functions

Functions Overview

Lists and categorizes all available operational functions of the air conditioning system.

Part 2 Specifications

Model Specifications

Provides detailed technical specifications for various models, including capacity, power, and dimensions.

Part 3 Printed Circuit Board Connector Wiring Diagram

Indoor Unit PCB Wiring

Details wiring connections for the indoor unit's control and display PCBs.

Outdoor Unit PCB Wiring

Details wiring connections for the outdoor unit's main and filter PCBs.

Part 4 Function and Control

Main Functions

Explains core operational modes like temperature, fan speed, and special functions.

Function of Thermistor

Describes the role of different thermistors in system operation and control.

Control Specification

Details control logic, mode hierarchy, frequency control, and protection mechanisms.

Part 5 Remote Controller

Remote Controller Operation

Explains the layout and usage of the remote controller and its buttons.

Part 6 Service Diagnosis

Troubleshooting with LED Indicators

Identifies errors using indoor/outdoor unit LED indicators for diagnosis.

Problem Symptoms and Measures

Lists common unit issues and their corresponding diagnostic checks and measures.

Service Check Function

Explains how to access and use the remote controller's diagnostic modes.

Troubleshooting Common Errors

Provides detailed troubleshooting steps for various error codes and system faults.

Component Checks

Outlines procedures for checking key components like thermistors, motors, and valves.

Part 7 Tips for Servicing

Servicing Tips

Offers practical advice for pump down and forced cooling operations.

Trial Operation Procedure

Describes the procedure for performing a trial operation after installation or repair.

Field Settings

Covers settings for multi-unit installations and jumper configurations.

Silicon Grease Application

Details the proper application of silicon grease for heat dissipation on PCBs.

Part 8 Appendix

Piping Diagrams

Illustrates the refrigerant piping layout for indoor and outdoor units.

Wiring Diagrams

Provides detailed electrical wiring schematics for indoor and outdoor units.

Removal Procedure References

References specific booklets for detailed unit disassembly and removal instructions.

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