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Daikin FTX-N Series User Manual

Daikin FTX-N Series
242 pages
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[Applied Models]
Inverter Pair : Heat Pump
Service
Manual
SiUS091601EA
Inverter Pair
Wall Mounted Type FTX-N/U Series
Floor Standing Type FVXS-V Series
Duct Connected Type FDMQ-R Series

Table of Contents

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Daikin FTX-N Series Specifications

General IconGeneral
BrandDaikin
ModelFTX-N Series
CategoryAir Conditioner
LanguageEnglish

Summary

Introduction

1. Safety Cautions

Crucial warnings and precautions for safe handling and repair of the equipment.

2. Icons Used

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

3. Revision History

Lists revisions and updates made to the manual.

Part 1 General Information

1. Applicable Models

Lists all indoor and outdoor models covered by this service manual.

2. Functions

Details the various functions available for different series of air conditioners.

Part 2 Specifications

1. Specifications

Provides detailed technical specifications for indoor and outdoor units.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Indoor Unit

Wiring diagrams for various indoor unit PCB connectors, aiding in diagnosis and repair.

2. Wireless Remote Controller Receiver

Wiring diagram for the wireless remote controller receiver unit.

3. Wired Remote Controller

Wiring diagram for the wired remote controller.

4. Outdoor Unit

Wiring diagrams for the main PCBs of the outdoor units.

5. Optional Adaptor

Wiring diagrams for optional accessories like the Wireless LAN adapter.

Part 4 Functions and Control

1. Common Functions

Explains fundamental functions like temperature control and frequency principles.

2. Functions for FTX, FVXS Series

Details specific operational functions for FTX and FVXS series indoor units.

3. Functions for FDMQ Series

Details specific operational functions for FDMQ series indoor units.

4. Thermistor Functions

Explains the role and function of various thermistors in the system's operation.

5. Control Specification

Outlines system control specifications, including mode hierarchy and frequency control.

2.6 Thermostat Control

Explains how the thermostat control operates based on temperature differences.

2.7 NIGHT SET Mode

Describes the NIGHT SET mode for comfortable sleeping and energy saving.

2.8 ECONO Operation

Details the ECONO operation for reducing power consumption and operating current.

2.9 INTELLIGENT EYE Operation

Explains the motion sensor-based operation for energy saving.

2.10 POWERFUL Operation

Describes the POWERFUL operation for maximum cooling and heating capacity.

2.11 Clock Setting

Instructions for setting the clock on the remote controller.

2.12 WEEKLY TIMER Operation

Guide to setting up weekly timer operations.

2.13 Other Functions

Covers other miscellaneous functions like hot-start and signal receiving.

3.1 Fan Speed Control for Indoor Unit

Explains how to control fan speed for FDMQ series units.

3.2 Program Dry Operation

Details the program dry operation for humidity removal.

3.3 Clock and Calender Setting (With BRC1E73)

Instructions for setting clock and calendar with specific remote controller.

3.4 Schedule Timer Operation (With BRC1E73)

Guide to setting schedule timers with a specific remote controller.

3.5 Drain Pump Control

Explains the drain pump control logic and operation.

3.6 Hot Start Control (In Heating Operation Only)

Details the hot start control for preventing cold air blast during heating.

3.7 Other Functions

Covers other miscellaneous functions for FDMQ series.

5.1 Mode Hierarchy

Explains the hierarchy of different operation modes.

5.2 Frequency Control

Details how compressor frequency is controlled based on temperature and load.

5.3 Controls at Mode Changing/Start-up

Describes control actions during mode changes and start-up.

5.4 Discharge Pipe Temperature Control

Explains control mechanisms based on discharge pipe temperature.

5.5 Input Current Control

Details control based on input current to protect the system.

5.6 Freeze-up Protection Control

Explains protection against freezing of the indoor heat exchanger.

5.7 Heating Peak-cut Control

Describes control to prevent abnormal high pressure during heating.

5.8 Outdoor Fan Control

Explains the control logic for the outdoor fan.

5.9 Liquid Compression Protection Function

Details protection against liquid compression during operation.

5.10 Defrost Control

Explains the defrost control process.

5.11 Electronic Expansion Valve Control

Details the control of the electronic expansion valve.

5.12 Malfunctions

Lists and describes various system malfunctions and error codes.

Part 5 Remote Controller

1. Applicable Remote Controller

Lists remote controller models compatible with the air conditioning units.

2. ARC466A21

Detailed description and operation of the ARC466A21 remote controller.

3. ARC466A37

Detailed description and operation of the ARC466A37 remote controller.

4. ARC480A8

Detailed description and operation of the ARC480A8 remote controller.

5. BRC082A43

Detailed description and operation of the BRC082A43 wireless remote controller.

6. BRC1E73

Detailed description and operation of the BRC1E73 wired remote controller.

Part 6 Service Diagnosis

1. General Problem Symptoms and Check Items

Lists common symptoms and initial checks for troubleshooting.

2. Troubleshooting with LED

Guides troubleshooting based on LED indicators on indoor and outdoor units.

3. Service Diagnosis

Methods for diagnosing issues using remote controllers and error codes.

4. Error Codes and Description

Comprehensive list of error codes, their descriptions, and reference pages.

5. Troubleshooting for FTX, FVXS Series

Specific troubleshooting procedures for FTX and FVXS series.

6. Troubleshooting for FDMQ Series

Specific troubleshooting procedures for FDMQ series.

7. Troubleshooting for Outdoor Unit

Troubleshooting steps specifically for outdoor unit issues.

8. Check

Procedures for checking various components like thermistors, motors, and PCBs.

Part 7 Trial Operation and Field Settings

1. Pump Down Operation

Procedure for pump down operation when relocating or disposing of the unit.

2. Forced Cooling Operation

Steps for performing forced cooling operation.

3. Trial Operation

Guidelines for conducting trial operation to ensure proper function.

4. Field Settings for FTX, FVXS Series

Configuration of field settings for FTX and FVXS series units.

4.1 Temperature Display Switch

How to switch between Fahrenheit and Celsius temperature displays.

4.2 When 2 Units are Installed in 1 Room

Address setting procedure for dual-unit installations in a single room.

4.3 Jumper and Switch Settings

Explanation of jumper and switch settings on indoor unit PCBs for configuration.

5. Field Settings for FDMQ Series

Configuration of field settings for FDMQ series units.

5.1 How to Change the Field Settings

Guide to changing field settings using the remote controller.

5.2 Overview of Field Settings

Summary of available field settings and their descriptions.

5.3 MAIN/SUB and Address Setting for Wireless Remote Controller

Procedure for setting MAIN/SUB and address for wireless remote controllers.

6. Field Settings for Outdoor Unit

Outdoor unit specific field settings.

6.1 Facility Setting (cooling at low outdoor temperature)

Setting for cooling at low outdoor temperatures, applicable to specific facilities.

6.2 Drain Pan Heater

Instructions for attaching and enabling the drain pan heater.

7. Silicone Grease on Power Transistor/Diode Bridge

Proper application of silicone grease for heat dissipation on PCB components.

Part 8 Appendix

1. Piping Diagrams

Diagrams illustrating the piping configurations for indoor and outdoor units.

1.1 Indoor Unit

Piping diagrams specific to the indoor units.

1.2 Outdoor Unit

Piping diagrams specific to the outdoor units.

2. Wiring Diagrams

Detailed wiring diagrams for indoor and outdoor units, essential for electrical troubleshooting.

2.1 Indoor Unit

Wiring diagrams for various indoor unit models.

2.2 Outdoor Unit

Wiring diagrams for various outdoor unit models.

3. Operation Limit

Specifies the operational limits for different models under various conditions.

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