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Daikin RXL12QMVJU Service Manual

Daikin RXL12QMVJU
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 RXL12QMVJU Specifications

General IconGeneral
Cooling Capacity (BTU)12000
Cooling Capacity (kW)3.52
Cooling Capacity (Ton)1
Heating Capacity (kW)3.6
Energy Efficiency RatingA++
SEER6.1
HSPF3.8
Energy Efficiency Ratio (Heating)3.6
RefrigerantR-32
Power Supply230V/1Ph/50Hz
Indoor Unit Noise Level19 dB
TypeSplit System Air Conditioner

Summary

Introduction

Safety Cautions

Provides warnings and cautions for worker safety during repair and maintenance.

Icons Used

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

Revision History

Details the changes and versions of the manual.

Part 1 General Information

Applicable Models

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

Functions

Details the available functions for various model series.

Part 2 Specifications

Specifications

Provides detailed technical specifications for indoor and outdoor units.

Part 3 Printed Circuit Board Connector Wiring Diagram

Indoor Unit

Wiring diagrams for various indoor unit models.

Wireless Remote Controller Receiver

Wiring diagram for the wireless remote controller receiver.

Wired Remote Controller

Wiring diagram for the wired remote controller.

Outdoor Unit

Wiring diagrams for various outdoor unit models.

Optional Adaptor

Wiring information for optional accessories.

Part 4 Functions and Control

Common Functions

Describes general functions like temperature control and frequency principle.

Functions for FTX, FVXS Series

Details specific functions for FTX and FVXS series units.

Functions for FDMQ Series

Details specific functions for FDMQ series units.

Thermistor Functions

Explains the role and function of various thermistors in the system.

Control Specification

Outlines system control logic, frequency control, and protection mechanisms.

Part 5 Remote Controller

Applicable Remote Controller

Lists remote controllers compatible with different unit series.

ARC466A21

Details the features and operation of the ARC466A21 remote controller.

ARC466A37

Details the features and operation of the ARC466A37 remote controller.

ARC480A8

Details the features and operation of the ARC480A8 remote controller.

BRC082A43

Details the features and operation of the BRC082A43 remote controller.

BRC1E73

Details the features and operation of the BRC1E73 remote controller.

Part 6 Service Diagnosis

General Problem Symptoms and Check Items

Lists common symptoms and initial checks for troubleshooting.

Troubleshooting with LED

Explains how to diagnose issues using LED indicators on indoor/outdoor units.

Service Diagnosis

Provides methods for diagnosing system faults using remote controllers.

Error Codes and Description

Lists all error codes, their descriptions, and reference pages for troubleshooting.

Troubleshooting for FTX, FVXS Series

Detailed troubleshooting steps for specific errors in FTX/FVXS series.

Troubleshooting for FDMQ Series

Detailed troubleshooting steps for specific errors in FDMQ series.

Troubleshooting for Outdoor Unit

Detailed troubleshooting steps for outdoor unit related errors.

Part 7 Trial Operation and Field Settings

Pump Down Operation

Procedure for safely removing refrigerant when relocating or disposing of the unit.

Forced Cooling Operation

Procedure for forcing the unit into cooling operation for testing.

Trial Operation

Steps for conducting trial operation to verify system functionality.

Field Settings for FTX, FVXS Series

Configuration settings for FTX and FVXS series units.

Field Settings for FDMQ Series

Configuration settings for FDMQ series units.

Field Settings for Outdoor Unit

Configuration settings for outdoor units.

Silicone Grease on Power Transistor/Diode Bridge

Guidance on applying silicone grease during PCB replacement.

Part 8 Appendix

Piping Diagrams

Schematic diagrams showing refrigerant piping for indoor units.

Wiring Diagrams

Schematic diagrams illustrating electrical connections for indoor units.

Operation Limit

Details the operational temperature limits for cooling and heating modes.

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