Daikin J series User manual

SiBE041025

[Applied Models]

Inverter Pair : Heat Pump

Inverter Pair

Wall Mounted Type J-Series

SiBE041025

iTable of Contents

Inverter Pair

Wall Mounted Type

J-Series

zHeat Pump

Indoor Unit

FTXN25JEV1B

FTXN35JEV1B

Outdoor Unit

RXN25JEV1B

RXN35JEV1B

SiBE041025

Table of Contents ii

1. Introduction .............................................................................................v

1.1 Safety Cautions ........................................................................................v

1.2 Used Icons .............................................................................................. ix

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

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

Part 2 Specifications .................................................................... 3

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

Part 3 Printed Circuit Board Connector Wiring Diagram ............. 5

1. Printed Circuit Board Connector Wiring Diagram....................................6

1.1 Indoor Unit................................................................................................6

1.2 Outdoor Unit .............................................................................................8

Part 4 Function and Control........................................................ 10

1. Main Functions......................................................................................11

1.1 Frequency Principle................................................................................11

1.2 Airflow Direction Control.........................................................................13

1.3 Fan Speed Control for Indoor Units........................................................14

1.4 Program Dry Operation ..........................................................................15

1.5 Automatic Operation...............................................................................16

1.6 Thermostat Control.................................................................................17

1.7 NIGHT SET Mode ..................................................................................18

1.8 ECONO Operation .................................................................................19

1.9 Inverter POWERFUL Operation .............................................................20

1.10 Other Functions......................................................................................21

2. Control Specification .............................................................................22

2.1 Function of Thermistor ...........................................................................22

2.2 Mode Hierarchy ......................................................................................23

2.3 Frequency Control..................................................................................24

2.4 Controls at Mode Changing / Start-up....................................................26

2.5 Discharge Pipe Temperature Control.....................................................27

2.6 Input Current Control..............................................................................28

2.7 Freeze-up Protection Control .................................................................29

2.8 Heating Peak-cut Control .......................................................................29

2.9 Outdoor Fan Control...............................................................................30

2.10 Liquid Compression Protection Function................................................30

2.11 Defrost Control .......................................................................................31

2.12 Malfunctions ...........................................................................................32

2.13 Forced Operation Mode .........................................................................33

Part 5 Operation Manual ............................................................. 34

1. System Configuration............................................................................35

2. Operation Manual..................................................................................36

2.1 Remote Controller ..................................................................................36

2.2 AUTO · DRY · COOL · HEAT · FAN Operation ......................................37

2.3 Adjusting the Airflow Direction................................................................39

SiBE041025

iii Table of Contents

2.4 COMFORT AIRFLOW Operation ...........................................................41

2.5 POWERFUL Operation ..........................................................................42

2.6 ECONO Operation .................................................................................43

2.7 OFF TIMER Operation ...........................................................................44

2.8 ON TIMER Operation .............................................................................45

Part 6 Service Diagnosis............................................................. 46

1. Caution for Diagnosis............................................................................47

1.1 Troubleshooting with LED ......................................................................47

2. Problem Symptoms and Measures .......................................................48

3. Service Check Function ........................................................................49

4. Troubleshooting ....................................................................................52

4.1 Error Codes and Description ..................................................................52

4.2 Indoor Unit PCB Abnormality .................................................................53

4.3 Freeze-up Protection Control or Heating Peak-cut Control....................54

4.4 Fan Motor (DC Motor) or Related Abnormality.......................................56

4.5 Thermistor or Related Abnormality (Indoor Unit)....................................58

4.6 Signal Transmission Error (between Indoor and Outdoor Unit) .............59

4.7 Unspecified Voltage (between Indoor and Outdoor Unit).......................60

4.8 Outdoor Unit PCB Abnormality...............................................................61

4.9 OL Activation (Compressor Overload) ...................................................62

4.10 Compressor Lock ...................................................................................63

4.11 Input Overcurrent Detection ...................................................................64

4.12 Four Way Valve Abnormality..................................................................65

4.13 Discharge Pipe Temperature Control.....................................................67

4.14 High Pressure Control in Cooling ...........................................................68

4.15 Compressor System Sensor Abnormality ..............................................70

4.16 Position Sensor Abnormality ..................................................................71

4.17 DC Voltage / Current Sensor Abnormality..............................................73

4.18 Thermistor or Related Abnormality (Outdoor Unit).................................74

4.19 Electrical Box Temperature Rise............................................................76

4.20 Radiation Fin Temperature Rise ............................................................78

4.21 Output Overcurrent Detection ................................................................80

4.22 Refrigerant Shortage ..............................................................................82

4.23 Low-voltage Detection or Over-voltage Detection..................................84

5. Check ....................................................................................................85

5.1 How to Check .........................................................................................85

Part 7 Removal Procedure .......................................................... 94

1. Indoor Unit.............................................................................................95

1.1 Removal of Air Filter...............................................................................95

1.2 Removal of Horizontal Blade..................................................................97

1.3 Removal of Front Panel..........................................................................99

1.4 Removal of Front Grille ........................................................................100

1.5 Removal of Electrical Box / Vertical Blades .........................................102

1.6 Removal of Swing Motor / PCB............................................................107

1.7 Removal of Indoor Heat Exchanger .....................................................111

1.8 Removal of Fan Rotor / Fan Motor.......................................................114

1.9 Exchange of Drain Hose ......................................................................117

SiBE041025

Table of Contents iv

2. Outdoor Unit........................................................................................118

2.1 Removal of Panels ...............................................................................118

2.2 Removal of Outdoor Fan / Fan Motor...................................................120

2.3 Removal of Electrical Box / PCB ..........................................................122

2.4 Removal of Sound Blanket...................................................................134

2.5 Removal of Four Way Valve.................................................................136

2.6 Removal of Compressor.......................................................................139

Part 8 Others ............................................................................. 140

1. Others .................................................................................................141

1.1 Trial Operation......................................................................................141

1.2 Field Settings........................................................................................142

1.3 Application of Silicon Grease to a Power Transistor and

a Diode Bridge......................................................................................143

Part 9 Appendix......................................................................... 144

1. Piping Diagrams..................................................................................145

1.1 Indoor Unit............................................................................................145

1.2 Outdoor Unit .........................................................................................145

2. Wiring Diagrams..................................................................................146

2.1 Indoor Unit............................................................................................146

2.2 Outdoor Unit .........................................................................................147

Introduction SiBE041025

1. Introduction

1.1 Safety Cautions

Cautions and

Warnings

Be sure to read the following safety cautions before conducting repair work.

The caution items are classified into “ Warning” and “ Caution”. The “ Warning”

items are especially important since they can lead to death or serious injury if they are not

followed closely. The “ Caution” items can also lead to serious accidents under some

conditions if they are not followed. Therefore, be sure to observe all the safety caution items

described below.

About the pictograms

This symbol indicates the item for which caution must be exercised.

The pictogram shows the item to which attention must be paid.

This symbol indicates the prohibited action.

The prohibited item or action is shown in the illustration or near the symbol.

This symbol indicates the action that must be taken, or the instruction.

The instruction is shown in the illustration or near the symbol.

After the repair work is complete, be sure to conduct a test operation to ensure that the

equipment operates normally, and explain the cautions for operating the product to the

customer.

1.1.1 Cautions Regarding Safety of Workers

Warning

Be sure to disconnect the power cable plug from the plug socket before

disassembling the equipment for repair.

Working on the equipment that is connected to the power supply may cause an

electrical shook.

If it is necessary to supply power to the equipment to conduct the repair or

inspecting the circuits, do not touch any electrically charged sections of the

equipment.

If the refrigerant gas is discharged during the repair work, do not touch the

discharged refrigerant gas.

The refrigerant gas may cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the

welded section, evacuate the refrigerant gas completely at a well-ventilated

place first.

If there is a gas remaining inside the compressor, the refrigerant gas or

refrigerating machine oil discharges when the pipe is disconnected, and it may

cause injury.

If the refrigerant gas leaks during the repair work, ventilate the area. The

refrigerant gas may generate toxic gases when it contacts flames.

The step-up capacitor supplies high-voltage electricity to the electrical

components of the outdoor unit.

Be sure to discharge the capacitor completely before conducting repair work.

A charged capacitor may cause an electrical shock.

Do not start or stop the air conditioner operation by plugging or unplugging the

power cable plug.

Plugging or unplugging the power cable plug to operate the equipment may

cause an electrical shock or fire.

SiBE041025 Introduction

Be sure to wear a safety helmet, gloves, and a safety belt when working at a

high place (more than 2 m). Insufficient safety measures may cause a fall

accident.

In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools

for the exclusive use of the R-410A refrigerant.

The use of materials for R-22 refrigerant models may cause a serious accident

such as a damage of refrigerant cycle as well as an equipment failure.

Warning

Caution

Do not repair the electrical components with wet hands.

Working on the equipment with wet hands may cause an electrical shock.

Do not clean the air conditioner by splashing water.

Washing the unit with water may cause an electrical shock.

Be sure to provide the grounding when repairing the equipment in a humid or

wet place, to avoid electrical shocks.

Be sure to turn off the power switch and unplug the power cable when cleaning

the equipment.

The internal fan rotates at a high speed, and cause injury.

Be sure to conduct repair work with appropriate tools.

The use of inappropriate tools may cause injury.

Be sure to check that the refrigerating cycle section has cooled down enough

before conducting repair work.

Working on the unit when the refrigerating cycle section is hot may cause

burns.

Use the welder in a well-ventilated place.

Using the welder in an enclosed room may cause oxygen deficiency.

Introduction SiBE041025

vii

1.1.2 Cautions Regarding Safety of Users

Warning

Be sure to use parts listed in the service parts list of the applicable model and

appropriate tools to conduct repair work. Never attempt to modify the

equipment.

The use of inappropriate parts or tools may cause an electrical shock,

excessive heat generation or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to

replace them.

Damaged cable and wires may cause an electrical shock, excessive heat

generation or fire.

Do not use a joined power cable or extension cable, or share the same power

outlet with other electrical appliances, since it may cause an electrical shock,

excessive heat generation or fire.

Be sure to use an exclusive power circuit for the equipment, and follow the local

technical standards related to the electrical equipment, the internal wiring

regulations, and the instruction manual for installation when conducting

electrical work.

Insufficient power circuit capacity and improper electrical work may cause an

electrical shock or fire.

Be sure to use the specified cable for wiring between the indoor and outdoor

units. Make the connections securely and route the cable properly so that there

is no force pulling the cable at the connection terminals.

Improper connections may cause excessive heat generation or fire.

When wiring between the indoor and outdoor units, make sure that the terminal

cover does not lift off or dismount because of the cable.

If the cover is not mounted properly, the terminal connection section may cause

an electrical shock, excessive heat generation or fire.

Do not damage or modify the power cable.

Damaged or modified power cable may cause an electrical shock or fire.

Placing heavy items on the power cable, and heating or pulling the power cable

may damage the cable.

Do not mix air or gas other than the specified refrigerant (R-410A / R-22) in the

refrigerant system.

If air enters the refrigerating system, an excessively high pressure results,

causing equipment damage and injury.

If the refrigerant gas leaks, be sure to locate the leaking point and repair it

before charging the refrigerant. After charging refrigerant, make sure that there

is no refrigerant leak.

If the leaking point cannot be located and the repair work must be stopped, be

sure to perform pump-down and close the service valve, to prevent the

refrigerant gas from leaking into the room. The refrigerant gas itself is

harmless, but it may generate toxic gases when it contacts flames, such as fan

and other heaters, stoves and ranges.

When relocating the equipment, make sure that the new installation site has

sufficient strength to withstand the weight of the equipment.

If the installation site does not have sufficient strength and if the installation

work is not conducted securely, the equipment may fall and cause injury.

Check to make sure that the power cable plug is not dirty or loose, then insert

the plug into a power outlet securely.

If the plug has dust or loose connection, it may cause an electrical shock or fire.

SiBE041025 Introduction

viii

Be sure to install the product correctly by using the provided standard

installation frame.

Incorrect use of the installation frame and improper installation may cause the

equipment to fall, resulting in injury.

For unitary type

only

Be sure to install the product securely in the installation frame mounted on the

window frame.

If the unit is not securely mounted, it may fall and cause injury.

For unitary type

only

When replacing the coin battery in the remote controller, be sure to disposed

of the old battery to prevent children from swallowing it.

If a child swallows the coin battery, see a doctor immediately.

Warning

Caution

Installation of a leakage breaker is necessary in some cases depending on the

conditions of the installation site, to prevent electrical shocks.

Do not install the equipment in a place where there is a possibility of

combustible gas leaks.

If the combustible gas leaks and remains around the unit, it may cause a fire.

Check to see if the parts and wires are mounted and connected properly, and

if the connections at the soldered or crimped terminals are secure.

Improper installation and connections may cause excessive heat generation,

fire or an electrical shock.

If the installation platform or frame has corroded, replace it.

Corroded installation platform or frame may cause the unit to fall, resulting in

injury.

Check the grounding, and repair it if the equipment is not properly grounded.

Improper grounding may cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure

that the resistance is 1 MΩor higher.

Faulty insulation may cause an electrical shock.

Be sure to check the drainage of the indoor unit after the repair.

Faulty drainage may cause the water to enter the room and wet the furniture

and floor.

Introduction SiBE041025

1.2 Used Icons

Icons are used to attract the attention of the reader to specific information. The meaning of each

icon is described in the table below:

Do not tilt the unit when removing it.

The water inside the unit may spill and wet the furniture and floor.

Be sure to install the packing and seal on the installation frame properly.

If the packing and seal are not installed properly, water may enter the room and

wet the furniture and floor.

For unitary type

only

Caution

Icon Type of

Information

Description

Note:

Note A “note” provides information that is not indispensable, but may

nevertheless be valuable to the reader, such as tips and tricks.

Caution

Caution A “caution” is used when there is danger that the reader, through

incorrect manipulation, may damage equipment, loose data, get

an unexpected result or has to restart (part of) a procedure.

Warning

Warning A “warning” is used when there is danger of personal injury.

Reference A “reference” guides the reader to other places in this binder or

in this manual, where he/she will find additional information on a

specific topic.

SiBE041025

List of Functions 1

Part 1

List of Functions

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

Functions SiBE041025

2List of Functions

1. Functions

Category Functions

FTXN25/35JEV1B

RXN25/35JEV1B

Category Functions

FTXN25/35JEV1B

RXN25/35JEV1B

Basic

Function

Inverter

(with Inverter Power Control) {Health &

Clean Air-Purifying Filter —

Operation Limit for Cooling (°CDB) 10

~46 Photocatalytic Deodorizing Filter —

Operation Limit for Heating (°CWB) –15

~20

Air-Purifying Filter with Photocatalytic

Deodorizing Function —

PAM Control {Titanium Apatite Photocatalytic

Air-Purifying Filter {

Standby Electricity Saving {

Compressor Oval Scroll Compressor — Air Filter (Prefilter) {

Swing Compressor {Wipe-Clean Flat Panel {

Rotary Compressor — Washable Grille —

Reluctance DC Motor {MOLD PROOF Operation —

Comfortable

Airflow

Power-Airflow Flap {Heating Dry Operation —

Power-Airflow Dual Flaps — Good-Sleep Cooling Operation —

Power-Airflow Diffuser — Timer 24-Hour ON/OFF Timer {

Wide-Angle Louvers {NIGHT SET Mode {

Vertical Auto-Swing

(Up and Down) {Worry Free

“Reliability &

Durability”

Auto-Restart

(after Power Failure) {

Horizontal Auto-Swing

(Right and Left) — Self-Diagnosis (Digital, LED) Display {

3-D Airflow — Wiring Error Check —

COMFORT AIRFLOW Operation {Anti-Corrosion Treatment of Outdoor Heat

Exchanger {

Comfort

Control

Auto Fan Speed {Flexibility Multi-Split / Split Type Compatible Indoor

Unit —

Indoor Unit Quiet Operation {

NIGHT QUIET Mode (Automatic) — Flexible Voltage Correspondence —

Outdoor Unit Quiet Operation (Manual) — High Ceiling Application —

INTELLIGENT EYE Operation — Chargeless 10 m

Quick Warming Function {Either Side Drain (Right or Left) {

Hot-Start Function {Power Selection —

Automatic Defrosting {Remote

Control 5-Rooms Centralized Controller

(Option) —

Operation Automatic Operation {

Program Dry Operation {Remote Control Adaptor

(Normal Open Pulse Contact)

(Option)

—

Fan Only {

Lifestyle

Convenience

New POWERFUL Operation

(Non-Inverter) —Remote Control Adaptor

(Normal Open Contact) (Option) —

Inverter POWERFUL Operation {DIII-NET Compatible (Adaptor) (Option) —

Priority-Room Setting — Remote

Controller

Wireless {

COOL / HEAT Mode Lock — Wired (Option) {

HOME LEAVE Operation —

ECONO Operation {

Indoor Unit ON/OFF Button {

Signal Receiving Sign {

Temperature Display —

Note: {: Holding Functions

— : No Functions

SiBE041025

Specifications 3

Part 2

Specifications

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

Specifications SiBE041025

4Specifications

1. Specifications

50 Hz, 220 - 230 - 240 V

Note: The data are based on the conditions shown in the table below.

Model

Indoor Units FTXN25JEV1B FTXN35JEV1B

Outdoor Units RXN25JEV1B RXN35JEV1B

Cooling Heating Cooling Heating

Capacity

Rated (Min. ~ Max.)

kW 2.5 (1.3 ~ 2.8) 2.8 (1.3 ~ 3.5) 3.2 (1.3 ~ 3.5) 3.5 (1.3 ~ 3.7)

Btu/h 8,500 (4,400 ~ 9,600) 9,600 (4,400 ~ 11,900) 10,900 (4,400 ~ 11,900) 11,900 (4,400 ~ 12,600)

Running Current (Rated) A 5.3 - 5.0 - 4.8 4.2 - 4.0 - 3.9 6.7 - 6.4 - 6.2 5.7 - 5.4 - 5.2

Power Consumption

Rated (Min. ~ Max.) W 970 (310 ~ 1,130) 840 (260 ~ 1,060) 1,390 (310 ~ 1,550) 1,160 (260 ~ 1,240)

Power Factor (Rated) % 83.2 - 84.3 - 84.2 90.9 - 91.3 - 89.7 94.3 - 94.4 - 93.4 92.5 - 93.4 - 92.9

COP

Rated (Min. ~ Max.) W/W 2.58 (4.19 ~ 2.48) 3.33 (5.00 ~ 3.30) 2.30 (4.19 ~ 2.26) 3.02 (5.00 ~ 2.98)

Piping

Connections

Liquid mm φ 6.4 φ 6.4

Gas mm φ9.5 φ9.5

Drain mm φ 16.0 φ 16.0

Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes

Max. Interunit Piping Length m 15 15

Max. Interunit Height Difference m 12 12

Chargeless m 10 10

Amount of Additional Charge

of Refrigerant g/m 20 20

Indoor Unit FTXN25JEV1B FTXN35JEV1B

Front Panel Color White White

Airflow Rate m³/min

(cfm)

H 9.2 (325) 9.8 (346) 9.4 (332) 10.1 (357)

M 7.4 (261) 8.0 (282) 7.6 (268) 8.3 (293)

L 5.3 (187) 6.2 (219) 5.4 (191) 6.4 (226)

SL 4.0 (141) 5.6 (198) 4.4 (155) 5.9 (208)

Fan

Type Cross Flow Fan Cross Flow Fan

Motor Output W 16 16

Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto

Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward

Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof

Running Current (Rated) A 0.19 - 0.18 - 0.17 0.19 - 0.18 - 0.17

Power Consumption (Rated) W 40 40

Power Factor (Rated) % 95.7 - 96.6 - 98.0 95.7 - 96.6 - 98.0

Temperature Control Microcomputer Control Microcomputer Control

Dimensions (H × W × D) mm 283 × 770 × 198 283 × 770 × 198

Packaged Dimensions (H × W × D) mm 261 × 844 × 342 261 × 844 × 342

Weight kg 7 7

Gross Weight kg 11 11

Operation

Sound H / M / L / SL dBA 40 / 33 / 26 / 22 40 / 34 / 28 / 25 41 / 34 / 27 / 23 41 / 35 / 29 / 26

Sound Power dBA 56 56 57 57

Outdoor Unit RXN25JEV1B RXN35JEV1B

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23AEXD 1YC23AEXD

Motor Output W 750 750

Refrigerant

Oil

Type FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant Type R-410A R-410A

Charge kg 0.8 0.8

Airflow Rate m³/min (cfm) H 28.8 (1,017) 28.8 (1,017)

Fan Type Propeller Propeller

Motor Output W 59 59

Running Current (Rated) A 5.11 - 4.82 - 4.63 4.01 - 3.82 - 3.73 6.51 - 6.22 - 6.03 5.51 - 5.22 - 5.03

Power Consumption (Rated) W 930 800 1,350 1,120

Power Factor (Rated) % 82.7 - 83.9 - 83.7 90.7 - 91.1 - 89.4 94.3 - 94.4 - 93.3 92.4 - 93.3 - 92.8

Starting Current A 5.3 6.7

Dimensions (H × W × D) mm 550 × 658 × 275 550 × 658 × 275

Packaged Dimensions (H × W × D) mm 592 × 771 × 348 592 × 771 × 348

Weight kg 28 28

Gross Weight kg 32 32

Operation Sound dBA 47 48 49 50

Sound Power dBA 61 62 63 64

Drawing No. 3D066722A 3D066723A

Conversion Formulae

kcal/h = kW × 860

Btu/h = kW × 3412

cfm = m³/min × 35.3

Cooling Heating Piping Length

Indoor ; 27°CDB / 19°CWB

Outdoor ; 35°CDB / 24°CWB Indoor ; 20°CDB

Outdoor ; 7°CDB / 6°CWB 5 m

SiBE041025

Printed Circuit Board Connector Wiring Diagram 5

Part 3

Printed Circuit Board

Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram....................................6

1.1 Indoor Unit................................................................................................6

1.2 Outdoor Unit .............................................................................................8

Printed Circuit Board Connector Wiring Diagram SiBE041025

6Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

1.1 Indoor Unit

Connectors and

Other Parts

PCB (1): Control PCB

PCB (2): Display PCB

1) S6 Connector for swing motor (horizontal blade)

2) S26 Connector for display PCB

3) S32 Connector for indoor heat exchanger thermistor

4) S200 Connector for fan motor

5) S403 Connector for adaptor PCB (option)

6) H1, H2, H3, FG Connector for terminal board

7) V1 Varistor

8) JA Address setting jumper

JB Fan speed setting when compressor stops for thermostat OFF

JC Power failure recovery function (auto-restart)

∗Refer to page 142 for detail.

9) LED A LED for service monitor (green)

10)FU1 (F1U) Fuse (3.15 A, 250 V)

1) S27 Connector for control PCB

2) SW1 (S1W) Forced operation ON/OFF button

3) LED1 (H1P) LED for operation (green)

4) LED2 (H2P) LED for timer (yellow)

5) RTH1 (R1T) Room temperature thermistor

SiBE041025 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 7

PCB Detail PCB (1): Control PCB

PCB (2): Display PCB

FU1

S200 LED A S32

S26

S403 2P206569-4

S27

SW1

(Solder side)

LED2 LED1

RTH1

3P206563-1

Printed Circuit Board Connector Wiring Diagram SiBE041025

8Printed Circuit Board Connector Wiring Diagram

1.2 Outdoor Unit

Connectors and

Other Parts

PCB(1): Filter PCB

PCB(2): Main PCB

1) S11 Connector for main PCB

2) AC1, AC2, S Connector for terminal board

3) E1, E2 Terminal for earth

4) HL2, HN2 Connector for main PCB

5) HR1 Connector for reactor

6) FU1 Fuse (3.15 A, 250 V)

7) FU3 Fuse (20 A, 250 V)

8) V2, V3 Varistor

1) S10 Connector for filter PCB

2) S40 Connector for overload protector

3) S70 Connector for fan motor

4) S80 Connector for four way valve coil

5) S90 Connector for thermistors

(outdoor temperature, outdoor heat exchanger, discharge pipe)

6) HL3, HN3 Connector for filter PCB

7) HR2 Connector for reactor

8) U, V, W Connector for compressor

9) LED A LED for service monitor (green)

10)V1 Varistor

11)J5 Jumper for improvement of defrost performance

∗Refer to page 142 for detail.

SiBE041025 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 9

PCB Detail PCB (1): Filter PCB

PCB (2): Main PCB

HR1

S11

HL2

HN2

E1, E2

AC2

AC1

FU3

3P257381-1

FU1

S70

S10 J5 S90 LED A

S40

HL3

S80

HN3

HR2

WV U

2P259229-1

SiBE041025

10 Function and Control

Part 4

Function and Control