SERVICE MANUAL - Inverter Pair Wall Mounted Type H-Series (DAIKIN) | Cộng đồng Kỹ thuật cơ điện Việt Nam EBOOKBKMT

Heat Pump

Indoor Units

FTXG09HVJU

FTXG12HVJU

FTXG15HVJU

Outdoor Units

RXG09HVJU

RXG12HVJU

RXG15HVJU

2. Troubleshooting

2.1 Error Code Indication by Remote Controller

* Various cases may be possible.

Code Unit Description Reference page

Basic Failure Diagnosis

Air conditioner does not run. 88

Air conditioner runs but does not get cooling (heating). 91

When operation starts, safety breaker trips. 93

Air conditioner makes a loud noise and vibrates. 95

A1 Indoor

Indoor unit PCB abnormality 96

A5 Peak-cut control or freeze-up protection 97

A6 Fan motor system abnormality 99

AH Streamer unit abnormality 101

C4 Indoor heat exchanger thermistor abnormality 103

C7 Front panel open / close abnormality 104

C9 Room temperature thermistor abnormality 103

CC Humidity sensor abnormality 105

E1 Outdoor

Outdoor unit PCB abnormality 109

E5 OL activation (compressor overload) 110

E6 Compressor lock 111

E7 DC fan lock 112

E8 Input overcurrent detection 113

EA Four-way valve abnormality 115

F3 Discharge pipe temperature control 117

F6 High pressure control in cooling 118

H0 Compressor sensor system abnormality 120

H6 Outdoor

Position sensor abnormality 121

H8 DC voltage / DC current sensor abnormality 123

H9 Outdoor air thermistor abnormality 124

J3 Discharge pipe thermistor abnormality 124

J6 Outdoor heat exchanger thermistor abnormality 124

L3 Abnormal temperature in electrical box 126

L4 Temperature rise in radiation fin 128

L5 Output overcurrent 130

P4 Radiation fin thermistor abnormality 124

U0 System

Insufficient gas 132

U2 Over voltage protection (OVP) / low voltage protection (LVP) 134

U4 Signal transmission error (indoor unit - outdoor unit) 106

Outdoor Outdoor unit PCB abnormality or communication circuit abnormality 135

U7 System

Signal transmission error on outdoor unit PCB 138

UA Incompatible power supply between indoor unit and outdoor unit 108 – System Lights-out of microcomputer status lamp 140

CONTENTS:

1. SAFETY CONSIDERATIONS............................................................... vi

Part 1

List of Functions ................................................................ 1

1. Functions.................................................................................................2

Part 2

Specifications .................................................................... 3

1. Specifications ..........................................................................................4

Part 3

Printed Circuit Board

Connector Wiring Diagram ................................................. 7

1. Printed Circuit Board Connector Wiring Diagram....................................8

1.1 Indoor Unit................................................................................................8

1.2 Outdoor Unit ...........................................................................................10

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ii Table of Contents

Part 4

Function and Control........................................................ 11

1. Description of Operation .......................................................................12

1.1 Indoor Unit..............................................................................................12

1.2 Outdoor Unit ...........................................................................................13

2. Main Functions......................................................................................14

2.1 QUATERNITY Drying Operation ............................................................14

2.2 Comfort Sleep Operation........................................................................16

2.3 Automatic Operation...............................................................................18

2.4 Comfort Airflow Mode .............................................................................19

2.5 Cooling Breeze Operation ......................................................................20

2.6 Power-airflow Dual FlapsFins.................................................................21

2.7 Wide-angle LouversFins.........................................................................21

2.8 3-D Airflow..............................................................................................22

2.9 POWERFUL Operation ..........................................................................23

2.10 Indoor Unit Quiet Operation ...................................................................23

2.11 Multi-colored Indicator Lamp ..................................................................24

2.12 Monitor Brightness Setting .....................................................................24

2.13 Information Display.................................................................................25

2.14 Mold-Proof Stick .....................................................................................26

2.15 FLASH STREAMER AIR PURIFYING Operation ..................................27

2.16 Wipe-clean Flat Panel ............................................................................29

2.17 Filter Cleaning Indicator (Remote Controller).........................................30

2.18 TIMER Operation ...................................................................................30

2.19 Night Set Mode.......................................................................................31

2.20 Table for Special Modes.........................................................................32

2.21 Thermostat Control.................................................................................33

2.22 Fan Speed Control for Indoor Units........................................................34

2.23 Draft Prevention (Hot-Start)....................................................................36

3. Control Specification .............................................................................37

3.1 Frequency Control..................................................................................37

3.2 Preheating Operation (Quick Warming Function) ..................................38

3.3 Four Way Valve Operation .....................................................................38

3.4 Compressor Start-up Protection .............................................................39

3.5 Fan Speed Control for Outdoor Unit.......................................................40

3.6 Fin Thermistor Control............................................................................41

3.7 Input Current Control..............................................................................41

3.8 Peak-cut Control.....................................................................................42

3.9 Indoor Heat Exchanger Freeze-up Protection........................................43

3.10 Dew Prevention ......................................................................................44

3.11 Liquid Compression Protection 2 ...........................................................45

3.12 Discharge Pipe Temperature Control.....................................................45

3.13 Automatic Defrosting ..............................................................................46

3.14 Electronic Expansion Valve Control .......................................................47

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Table of Contents iii

Part 5

System Configuration....................................................... 53

1. Installation Manual ................................................................................54

1.1 Indoor Units ............................................................................................54

1.2 Outdoor Units .........................................................................................64

2. System Configuration............................................................................70

3. Instruction..............................................................................................71

3.1 Remote Controller ..................................................................................71

3.2 Cooling · QUATERNITY DRYING Operation ........................................73

3.3 Heating Operation ..................................................................................74

3.4 AUTO Operation.....................................................................................75

3.5 FLASH STREAMER AIR PURIFYING · POWERFUL Operation ...........76

3.6 Adjusting Airflow Direction · Airflow Rate ...............................................77

3.7 COMFORT AIRFLOW · COOLING BREEZE Operation ........................78

3.8 TIMER Operation ...................................................................................79

3.9 COMFORT SLEEP Operation ................................................................80

3.10 SET UP · CHILD PROOF LOCK ............................................................81

3.11 INFORMATION DISPLAY ......................................................................82

Part 6

Service Diagnosis............................................................ 83

1. Convenient Service Check Function .....................................................85

2. Troubleshooting ....................................................................................87

2.1 Error Code Indication by Remote Controller ..........................................87

2.2 Air conditioner does not run. ..................................................................88

2.3 Air conditioner runs but does not cool or heat .......................................91

2.4 When operation starts, safety breaker trips............................................93

2.5 Air conditioner makes a loud sound and vibrates...................................95

2.6 Indoor Unit PCB Abnormality .................................................................96

2.7 Peak-cut Control or Freeze-up Protection ..............................................97

2.8 Fan Motor System (DC Motor) Abnormality ...........................................99

2.9 Streamer Unit Abnormality ...................................................................101

2.10 Thermistor System Abnormality ...........................................................103

2.11 Front Panel Open / Close Abnormality.................................................104

2.12 Humidity Sensor Abnormality ...............................................................105

2.13 Signal Transmission Error (Indoor Unit - Outdoor Unit) .......................106

2.14 Incompatible Power Supply between Indoor Unit and Outdoor Unit ....108

2.15 Outdoor Unit PCB Abnormality.............................................................109

2.16 OL Activation (Compressor Overload) .................................................110

2.17 Compressor Lock .................................................................................111

2.18 DC Fan Lock ........................................................................................112

2.19 Input Overcurrent Detection .................................................................113

2.20 Four-Way Valve Abnormality................................................................115

2.21 Discharge Pipe Temperature Control...................................................117

2.22 High Pressure Control in Cooling .........................................................118

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iv Table of Contents

2.23 Compressor Sensor System Abnormality ............................................120

2.24 Position Sensor Abnormality ................................................................121

2.25 DC Voltage / DC Current Sensor Abnormality .....................................123

2.26 Thermistor System Abnormality ...........................................................124

2.27 Abnormal Temperature in Electrical Box..............................................126

2.28 Temperature Rise in Radiation Fin.......................................................128

2.29 Output Overcurrent...............................................................................130

2.30 Insufficient Gas.....................................................................................132

2.31 Over Voltage Protection / Low Voltage Protection ...............................134

2.32 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality135

2.33 Signal Transmission Error on Outdoor Unit PCB .................................138

2.34 Lights-out of Microcomputer Status Lamp............................................140

3. Check ..................................................................................................141

3.1 Thermistor Resistance Check ..............................................................141

3.2 Installation Condition Check.................................................................142

3.3 Outdoor Fan System Check (DC Motor) ..............................................142

3.4 Power Supply Waveform Check...........................................................143

3.5 Main Circuit Electrolytic Capacitor Check ............................................143

3.6 Refrigerant System Check ...................................................................144

3.7 “Inverter Checker” Check .....................................................................145

3.8 Power Transistor Check .......................................................................146

3.9 Discharge Pressure Check...................................................................147

3.10 Electronic Expansion Valve Check.......................................................148

3.11 Indoor Unit PCB Output Check ............................................................149

3.12 Rotating Pulse Input on Outdoor Unit PCB Check ...............................150

3.13 Humidity Sensor Check........................................................................151

3.14 Main Circuit Short Check......................................................................151

3.15 Four-Way Valve Performance Check...................................................152

3.16 Solenoid Valve for Dehumidification Check .........................................153

Part 7

Removal Procedure ........................................................ 155

1. Indoor Unit...........................................................................................156

1.1 Removal of Air Filters / Front panel......................................................156

1.2 Removal of Upper Panel ......................................................................163

1.3 Removal of Front Grille ........................................................................166

1.4 Removal of Assembly of Open/Close Mechanism ...............................169

1.5 Removal of Assembly of Reduction Motor ...........................................171

1.6 Removal of Electrical Box ....................................................................174

1.7 Removal of PCB...................................................................................179

1.8 Removal of Dehumidifying Solenoid Valve Coil ...................................185

1.9 Removal of Drain Hose ........................................................................186

1.10 Removal of Swing Motor ......................................................................188

1.11 Removal of Heat Exchanger ................................................................190

1.12 Removal of Propeller Fan / Fan Motor .................................................193

1.13 Removal of Horizontal Blades / Vertical Blades ...................................196

1.14 Removal of Streamer Unit ....................................................................199

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Table of Contents v

2. Outdoor Unit........................................................................................203

2.1 How to Check the Service Monitor (LED A) .........................................203

2.2 Removal of Propeller Fan / Fan Motor .................................................205

2.3 Removal of Electrical Box ....................................................................210

2.4 Removal of PCB...................................................................................214

2.5 Removal of Sound Blanket...................................................................218

2.6 Removal of Thermistor Assembly ........................................................220

2.7 Removal of Reactor / Partition Plate ....................................................222

2.8 Removal of Four Way Valve.................................................................224

2.9 Removal of the Expansion Valve .........................................................226

2.10 Removal of Compressor.......................................................................228

Part 8

Others Additional Information ....................................... 231

1. Additional Information .........................................................................232

1.1 Trial Operation......................................................................................232

1.2 Field Setting .........................................................................................233

1.3 Application of Silicon Grease to a Power Transistor and a Diode Bridge234

Part 9

Appendix......................................................................... 235

1. Piping Diagrams..................................................................................236

1.1 Indoor Units ..........................................................................................236

1.2 Outdoor Units .......................................................................................236

2. Wiring Diagrams..................................................................................237

2.1 Indoor Units ..........................................................................................237

2.2 Outdoor Units .......................................................................................237

Index

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