Daikin J-Series Inverter AC Service Manual – RXG & FTXG Models PDF

Description

Daikin J-Series Inverter AC Service Manual – RXG & FTXG Models PDF DOWNLOAD

Description

This Daikin J-Series Inverter Pair Service Manual is the factory-authorized repair and diagnostics guide used by Daikin service engineers. It covers wall-mounted heat pump inverter systems in the J-Series range, providing complete technical data for both indoor (FTXG) and outdoor (RXG) units.

Designed for professional HVAC technicians, this manual delivers everything needed for:

• Accurate fault diagnosis

• Inverter & PCB-level troubleshooting

• Safe disassembly and component replacement

• Performance testing & field configuration

• Wiring verification and system calibration

Whether you are handling sensor errors, PCB faults, compressor issues, fan lock errors, refrigerant problems, or inverter protection trips, this manual walks you through each scenario with official Daikin logic and flowcharts.

🔧 Models Covered

Indoor Units

• FTXG25JV1BW / FTXG25JV1BS

• FTXG35JV1BW / FTXG35JV1BS

• FTXG50JV1BW / FTXG50JV1BS

Outdoor Units

• RXG25J2V1B / RXG25K2V1B

• RXG35J2V1B / RXG35K2V1B

• RXG50K2V1B

🧭 What’s Inside This Manual

🛡️ Safety & Introduction

• Electrical & refrigerant safety precautions

• R-410A handling guidelines

• ESD & service warnings

• Technician and user safety rules

⚙️ Part 1 – List of Functions

• Inverter operation principles

• Comfort airflow logic

• ECONO, POWERFUL, NIGHT SET, INTELLIGENT EYE

• Auto-restart & reliability functions

📐 Part 2 – Specifications

• Cooling & heating capacities

• Power consumption & current draw

• EER / COP values

• Indoor & outdoor unit dimensions

• Piping limits & refrigerant charge

🔌 Part 3 – PCB Connector Wiring Diagrams

• Indoor unit PCB layouts

• Outdoor unit main & filter PCBs

• Connector pinouts

• Fan motor, thermistor, valve, compressor terminals

• Service LEDs and jumper settings

🧠 Part 4 – Function & Control Logic

• Temperature & frequency control

• Inverter drive principles

• Thermostat logic

• Defrost control

• Input current & peak-cut control

• Expansion valve & discharge temperature control

📘 Part 5 – Operation Manual

• AUTO / DRY / COOL / HEAT / FAN modes

• Airflow adjustment

• Timer & weekly scheduler

• Comfort airflow & quiet modes

🛠️ Part 6 – Service Diagnosis

• LED troubleshooting

• Symptom-to-fault mapping

• Complete error code list

• PCB abnormality diagnosis

• Fan lock, compressor lock, sensor faults

• High pressure & overcurrent protection

• Refrigerant shortage detection

🔩 Part 7 – Removal Procedures

• Indoor unit disassembly

  • Filters, grille, panels

  • Fan motor & heat exchanger

  • PCB boards & swing motors

• Outdoor unit disassembly

  • Panels & fan motor

  • Electrical box & PCBs

  • Four-way valve

  • Compressor & expansion valve

⚡ Part 8 – Trial Operation & Field Settings

• Pump-down procedure

• Forced cooling mode

• Trial run steps

• Jumper & switch configuration

• Power transistor grease application

📎 Part 9 – Appendix

• Refrigerant piping diagrams

• Complete wiring diagrams

• Indoor & outdoor schematics

📊 File Details

🚀 Why This Manual Is Essential

• Diagnose inverter and PCB faults accurately

• Replace compressors, fans, valves & sensors safely

• Understand Daikin’s proprietary control logic

• Avoid guesswork and repeat service calls

• Perform factory-standard repairs with confidence