ServiceManualInverter PairWall Mounted Type FTX-N SeriesSiUS041638EA[Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump

Daikin FTX-N Series Service Manual

Introduction

Safety Cautions

Warnings and Cautions Regarding Safety of Users

Icons Used

Revision History

Part 1 General Information

Applicable Models

Functions

Part 2 Specifications

Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Indoor Unit

FTX15NMVJU

FTX18/24UVJU

FVXS09/12/15NVJU

FDMQ12/18/24RVJU

Wireless Remote Controller Receiver

Wired Remote Controller

Outdoor Unit

RXL12QMVJU(9)

RXL15QMVJU

RXL18/24UMVJU

Optional Adaptor

Part 4 Functions and Control

Common Functions

Functions for FTX, FVXS Series

COMFORT AIRFLOW Operation

Fan Speed Control for Indoor Unit

Program Dry Operation

Automatic Cooling/Heating Changeover

Thermostat Control

NIGHT SET Mode

ECONO Operation

INTELLIGENT EYE Operation

POWERFUL Operation

Clock Setting

WEEKLY TIMER Operation

Other Functions

Functions for FDMQ Series

Clock and Calender Setting (With BRC1E73)

Schedule Timer Operation (With BRC1E73)

Drain Pump Control

Hot Start Control (In Heating Operation Only)

Thermistor Functions

Control Specification

Controls at Mode Changing/Start-up

compressor protection function

Discharge Pipe Temperature Control

Input Current Control

Freeze-up Protection Control

Outdoor Fan Control

Defrost Control

Electronic Expansion Valve Control

pressure equalizing control

Malfunctions

Part 5 Remote Controller

Applicable Remote Controller

ARC466A21

ARC466A37

ARC480A8

BRC082A43

BRC1E73

operation lamp

operation mode

Part 6 Service Diagnosis

General Problem Symptoms and Check Items

Troubleshooting with LED

Service Diagnosis

ARC466 Series

Error Codes and Description

Troubleshooting for FTX, FVXS Series

Freeze-up Protection Control/Heating Peak-cut Control

Indoor Fan Motor (DC Motor) or Related Abnormality

Thermistor or Related Abnormality

Low-voltage Detection or Over-voltage Detection

Signal Transmission Error (Between Indoor Unit and Outdoor Unit)

Unspecified Voltage (Between Indoor Unit and Outdoor Unit)

Troubleshooting for FDMQ Series

Drain Level Control System Abnormality

Indoor Fan PCB Abnormality

Humidifier or Related Abnormality

Remote Controller Thermistor Abnormality

Signal Transmission Error (Between Indoor and Outdoor Unit)

6.10 Signal Transmission Error (Between Indoor Unit and Remote Controller

Signal Transmission Error (Between MAIN/SUB Remote Controllers)

Mismatching of Indoor Unit and Outdoor Unit

Troubleshooting for Outdoor Unit

OL Activation (Compressor Overload)

FTX-N Series

FTX30NVJU

FTX36NVJU

R-410A

RK30NMVJU

RK30NMVJUA

RK36NMVJU

RK36NMVJUA

RX30NMVJU

RX30NMVJUA

RX36NMVJU

RX36NMVJUA

SiUS041638EA