Daikin FLKS35BVMB, RK25BVMB, RKS35BVMB, FLK25BVMB, RK35BVMB Service Manual

...

SiBE05-311

Inverter Pair

Floor / Ceiling Suspended Dual Type B-Series

Service

Manual

[Applied Models]

Inverter Pair : Cooling Only Inverter Pair : Heat Pump

SiBE05-311

Table of Contents i

Inverter Pair

B-Series

Cooling Only Indoor Unit

FLKS25BVMB FLKS35BVMB FLK25BVMB FLK35BVMB

Outdoor Unit

RKS25BVMB RKS35BVMB RK25BVMB RK35BVMB

Heat Pump Indoor Unit

FLXS25BVMB FLXS35BVMB FLX25BVMB FLX35BVMB

Outdoor Unit

RXS25BVMB RXS35BVMB RX25BVMB RX35BVMB

SiBE05-311

ii Table of Contents

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

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

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

1. List of Functions......................................................................................2

1.1 Cooling Only............................................................................................ 2

1.2 Heat Pump...............................................................................................3

Part 2 Specifications.....................................................................5

1. Specifications..........................................................................................6

1.1 Cooling Only............................................................................................ 6

1.2 Heat Pump...............................................................................................8

Part 3 Printed Circuit Board

Connector Wiring Diagram...............................................11

1. Printed Circuit Board Connector Wiring Diagram..................................12

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

1.2 Outdoor Unit..........................................................................................14

Part 4 Function and Control........................................................17

1. Main Functions......................................................................................18

1.1 Frequency Principle............................................................................... 18

1.2 Auto-Swing............................................................................................20

1.3 Fan Speed Control for Indoor Units....................................................... 21

1.4 Programme Dry Function ...................................................................... 22

1.5 Automatic Operation.............................................................................. 23

1.6 Night Set Mode...................................................................................... 24

1.7 Home Leave Operation ......................................................................... 25

1.8 Inverter Powerful Operation................................................................... 26

1.9 Other Functions..................................................................................... 27

2. Function of Main Structural Parts..........................................................28

2.1 Main Structural Parts............................................................................. 28

2.2 Function of Thermistor........................................................................... 29

3. Control Specification.............................................................................31

3.1 Mode Hierarchy..................................................................................... 31

3.2 Frequency Control................................................................................. 32

3.3 Controls at Mode Changing / Start-up................................................... 34

3.4 Discharge Pipe Control.......................................................................... 35

3.5 Input Current Control............................................................................. 35

3.6 Freeze-up Protection Control ................................................................ 36

3.7 Heating Peak-cut Control ...................................................................... 36

3.8 Fan Control............................................................................................ 37

3.9 Moisture Protection Function 1

(Securing of Differential Pressure and Blown Air Temperature)............ 37

3.10 Moisture Protection Function 2.............................................................. 38

3.11 Defrost Control ...................................................................................... 39

3.12 Electronic Expansion Valve Control ...................................................... 40

3.13 Malfunctions .......................................................................................... 43

SiBE05-311

Table of Contents iii

3.14 Forced Operation Mode......................................................................... 44

3.15 Additional Function................................................................................ 44

Part 5 System Configuration.......................................................45

1. System Configuration............................................................................46

2. Instruction..............................................................................................47

2.1 Safety Precautions ................................................................................ 47

2.2 Names of Parts...................................................................................... 49

2.3 Preparation before Operation................................................................ 52

2.4 AUTO · DRY · COOL · HEAT · FAN Operation..................................... 55

2.5 Adjusting the Air Flow Direction............................................................. 57

2.6 POWERFUL Operation ......................................................................... 59

2.7 OUTDOOR UNIT SILENT Operation .................................................... 60

2.8 HOME LEAVE Operation ...................................................................... 61

2.9 TIMER Operation................................................................................... 63

2.10 Care and Cleaning.................................................................................65

2.11 Troubleshooting..................................................................................... 68

Part 6 Service Diagnosis.............................................................71

1. Caution for Diagnosis............................................................................72

2. Problem Symptoms and Measures.......................................................73

3. Service Check Function........................................................................74

4. Troubleshooting ....................................................................................75

4.1 Error Codes and Description................................................................. 75

4.2 Indoor Unit PCB Abnormality................................................................. 76

4.3 Freeze-up Protection Control or High Pressure Control........................ 77

4.4 Fan Motor (AC Motor) or Related Abnormality...................................... 79

4.5 Thermistor or Related Abnormality (Indoor Unit)...................................80

4.6 Signal Transmission Error (between Indoor and Outdoor Units)........... 81

4.7 OL Activation (Compressor Overload)................................................... 82

4.8 Compressor Lock .................................................................................. 83

4.9 Input Over Current Detection................................................................. 84

4.10 Four Way Valve Abnormality................................................................. 85

4.11 Discharge Pipe Temperature Control.................................................... 87

4.12 Position Sensor Abnormality ................................................................. 88

4.13 CT or Related Abnormality.................................................................... 89

4.14 Thermistor or Related Abnormality (Outdoor Unit)................................ 91

4.15 Electrical Box Temperature Rise........................................................... 93

4.16 Radiation Fin Temperature Rise............................................................ 95

4.17 Output Over Current Detection.............................................................. 97

4.18 Insufficient Gas...................................................................................... 99

4.19 Over-voltage Detection........................................................................ 101

4.20 High Pressure Control in Cooling........................................................ 102

5. Check..................................................................................................104

5.1 How to Check......................................................................................104

Part 7 Removal Procedure ........................................................113

1. Indoor Unit...........................................................................................114

1.1 Removal of the Air Filter / Front Grille................................................. 114

SiBE05-311

iv Table of Contents

1.2 Removal of the Front Panel................................................................. 117

1.3 Removal of the Horizontal Blade......................................................... 119

1.4 Removal of the Signal Receiver Unit / Swing Motor............................ 120

1.5 Removal of the Discharge Grille.......................................................... 121

1.6 Removal of the Drain Pan ................................................................... 122

1.7 Removal of the Electrical Box / PCB...................................................123

1.8 Removal of the Fan Rotor / Fan Motor................................................ 126

1.9 Removal of the Heat Exchanger..........................................................128

2. Outdoor Unit........................................................................................130

2.1 Removal of External Casing................................................................ 130

2.2 Removal of Bell mouth and Left Side Plate......................................... 133

2.3 Removal of PCB and Electrical Box....................................................134

2.4 Removal of Propeller Fan and Fan Motor ........................................... 140

2.5 Removal of Compressor Noise Absorption Pad.................................. 142

2.6 Removal of Partition Plate and Reactor .............................................. 144

2.7 Removal of Four Way Valve and Motor Valve..................................... 147

2.8 Removal of Compressor...................................................................... 150

Part 8 Others .............................................................................153

1. Others .................................................................................................154

1.1 Test Run from the Remote Controller.................................................. 154

1.2 Jumper Settings................................................................................... 155

Part 9 Appendix.........................................................................157

1. Piping Diagrams..................................................................................158

1.1 Indoor Units.........................................................................................158

1.2 Outdoor Units ...................................................................................... 159

2. Wiring Diagrams..................................................................................161

2.1 Indoor Units.........................................................................................161

2.2 Outdoor Units ...................................................................................... 162

Index .............................................................................................i

Drawings & Flow Charts ................................................................v

SiBE05-311 Introduction

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 an item for which caution must be exercised.

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

This symbol indicates a prohibited action.

The prohibited item or action is shown inside or near the symbol.

This symbol indicates an action that must be taken, or an instruction. The instruction is shown inside 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 Caution in Repair

Warning

Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair. Working on the equipment that is connected to a power supply can 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 discharges during the repair work, do not touch the discharging refrigerant gas. The refrigerant gas can cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the welded section, release 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 can cause injury.

If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas can 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 can 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 can cause an electrical shock or fire.

Introduction SiBE05-311

1.1.2 Cautions Regarding Products after Repair

Caution

Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock.

Do not clean the air conditioner by splashing water. Washing the unit with water can 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.

Do not tilt the unit when removing it. The water inside the unit can spill and wet the furniture and floor.

Be sure to check that the refrigerating cycle section has cooled down sufficiently before conducting repair work. Working on the unit when the refrigerating cycle section is hot can cause burns.

Use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen deficiency.

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 can cause an electrical shock, excessive heat generation or fire.

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 can fall and cause injury.

Be sure to install the product correctly by using the provided standard installation frame. Incorrect use of the installation frame and improper installation can cause the equipment to fall, resulting in injury.

For integral units only

Be sure to install the product securely in the installation frame mounted on a window frame. If the unit is not securely mounted, it can fall and cause injury.

For integral units only

SiBE05-311 Introduction

vii

1.1.3 Inspection after Repair

Be sure to use an exclusive power circuit for the equipment, and follow the 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 can cause an electrical shock or fire.

Be sure to use the specified cable to connect 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 can cause excessive heat generation or fire.

When connecting the cable 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 can cause an electrical shock, excessive heat generation or fire.

Do not damage or modify the power cable. Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the power cable, and heating or pulling the power cable can damage the cable.

Do not mix air or gas other than the specified refrigerant (R410A) 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 leak and repair it before charging the refrigerant. After charging refrigerant, make sure that there is no refrigerant leak. If the leak 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 can generate toxic gases when it contacts flames, such as fan and other heaters, stoves and ranges.

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

Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not installed properly, water can enter the room and wet the furniture and floor.

For integral units only

Warning

Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. If the plug has dust or loose connection, it can cause an electrical shock or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to replace them. Damaged cable and wires can cause an electrical shock, excessive heat generation or fire.

Introduction SiBE05-311

viii

1.1.4 Using 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:

1.1.5 Using Icons List

Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire.

Warning

Caution

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 can cause excessive heat generation, fire or an electrical shock.

If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury.

Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 Mohm or higher. Faulty insulation can cause an electrical shock.

Be sure to check the drainage of the indoor unit after the repair. Faulty drainage can cause the water to enter the room and wet the furniture and floor.

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.

SiBE05-311

List of Functions 1

Part 1

List of Functions

1. List of Functions......................................................................................2

1.1 Cooling Only............................................................................................ 2

1.2 Heat Pump...............................................................................................3

List of Functions SiBE05-311

2 List of Functions

1. List of Functions

1.1 Cooling Only

Category Functions

FLKS25·35BVMB

RKS25·35BVMB

FLK25·35BVMB

RK25·35BVMB

Category Functions

FLKS25·35BVMB

RKS25·35BVMB

FLK25·35BVMB

RK25·35BVMB

Basic Function

Inverter (with Inverter Power Control) 

Health & Clean

Air Purifying Filter with Bacteriostatic, Virustatic Functions



Operation Limit for Cooling (˚CDB)

–10 ~4610~46

Operation Limit for Heating (˚CWB) — — Photocatalytic Deodorizing Filter  — PAM Control  —

Air Purifying Filter with Photocatalytic Deodorizing Function

——

Compressor

Oval Scroll Compressor — — Longlife Filter — — Swing Compressor  Ultra-Longlife Filter (Option) — — Rotary Compressor — — Mold Proof Air Filter  Reluctance DC Motor  — Wipe-clean Flat Panel — —

Comfortable Airflow

Power-Airflow Flap — — Washable Grille — — Power-Airflow Dual Flaps — — Filter Cleaning Indicator — — Power-Airflow Diffuser — — Good-Sleep Cooling Operation — — Wide-Angle Louvers — —

Timer

24-Hour On/Off Timer  Vertical Auto-Swing (Up and Down)  Night Set Mode  Horizontal Auto-Swing (Right and Left) — —

Worry Free “Reliability & Durability”

Auto-Restart (after Power Failure)  3-D Airflow — — Self-Diagnosis (Digital, LED) Display   3-Step Airflow (H/P Only) — — Wiring Error Check — —

Comfort Control

Auto Fan Speed 

Anticorrosion Treatment of Outdoor

Heat Exchanger



Indoor Unit Silent Operation  Night Quiet Mode (Automatic) — —

Flexibility

Multi-Split / Split Type Compatible

Indoor Unit

 —

Outdoor Unit Silent Operation (Manual)  — Intelligent Eye — — Flexible Voltage Correspondence  Quick Warming Function — — High Ceiling Application — — Hot-Start Function — — Chargeless 10m 10m Automatic Defrosting — — Power Selection — —

Operation

Automatic Operation — —

Remote Control

5-Rooms Centralized Controller

(Option)



Programme Dry Function 

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  Priority-Room Setting — — DIII-NET Compatible (Adaptor)(Option)  Cooling / Heating Mode Lock — —

Remote Controller

Wireless  Home Leave Operation  Wired — — Indoor Unit On/Off Switch  Signal Reception Indicator  Temperature Display — — Another Room Operation — —

Note:  : Holding Functions

— : No Functions

 : Digital Only

SiBE05-311 List of Functions

List of Functions 3

1.2 Heat Pump

Category Functions

FLXS25·35BVMB

RXS25·35BVMB

FLX25·35BVMB

RX25·35BVMB

Category Functions

FLXS25·35BVMB

RXS25·35BVMB

FLX25·35BVMB

RX25·35BVMB

Basic Function

Inverter (with Inverter Power Control) 

Health & Clean

Air Purifying Filter with Bacteriostatic,

Virustatic Functions



Operation Limit for Cooling (˚CDB)

–10 ~4610~46

Operation Limit for Heating (˚CWB)

–15

~15.5

–10

~15.5

Photocatalytic Deodorizing Filter  —

PAM Control  —

Air Purifying Filter with Photocatalytic

Deodorizing Function

——

Compressor

Comfortable Airflow

Timer

24-Hour On/Off Timer  Vertical Auto-Swing (Up and Down)  Night Set Mode  Horizontal Auto-Swing (Right and Left) — —

Worry Free “Reliability & Durability”

Auto-Restart (after Power Failure)  3-D Airflow — — Self-Diagnosis (Digital, LED) Display   3-Step Airflow (H/P Only) — — Wiring Error Check — —

Comfort Control

Auto Fan Speed 

Anticorrosion Treatment of Outdoor

Heat Exchanger



Indoor Unit Silent Operation  Night Quiet Mode (Automatic) — —

Flexibility

Multi-Split / Split Type Compatible

Indoor Unit

 —

Outdoor Unit Silent Operation (Manual)  — Intelligent Eye — — Flexible Voltage Correspondence  Quick Warming Function  High Ceiling Application — — Hot-Start Function  Chargeless 10m 10m Automatic Defrosting  Power Selection — —

Operation

Automatic Operation 

Remote Control

5-Rooms Centralized Controller

(Option)



Programme Dry Function 

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  Priority-Room Setting — — DIII-NET Compatible (Adaptor)(Option)  Cooling / Heating Mode Lock — —

Remote Controller

Wireless  Home Leave Operation  Wired — — Indoor Unit On/Off Switch  Signal Reception Indicator  Temperature Display — — Another Room Operation — —

Note:  : Holding Functions

— : No Functions

 : Digital Only

List of Functions SiBE05-311

4 List of Functions

SiBE05-311

Specifications 5

Part 2

Specifications

1. Specifications..........................................................................................6

1.1 Cooling Only............................................................................................ 6

1.2 Heat Pump...............................................................................................8

Specifications SiBE05-311

6 Specifications

1. Specifications

1.1 Cooling Only

230V, 50Hz

Notes:

 MAX. interunit piping length: 25m  MAX. interunit height difference: 15m  Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m  The data are based on the conditions shown in the table below.

Model

Indoor Units FLKS25BVMB FLKS35BVMB Outdoor Units RKS25BVMB RKS35BVMB

Capacity Rated (Min.~Max.)

kW 2.5 (1.0~3.0) 3.5 (1.0~3.7)

Btu/h 8,550 (3,400~10,250) 11,950 (3,400~12,600)

kcal/h 2,150 (860~2,580) 3,010 (860~3,182) Moisture Removal L/h 1.2 1.9 Running Current (Rated) A 3.8 5.7 Power Consumption

Rated (Min.~Max.)

W 715 (240~925) 1,220 (240~1,300)

Power Factor % 81.8 93.1 COP W/W 3.50 2.87

Piping Connections

Liquid mm φ 6.4 φ 6.4 Gas mm φ 9.5 φ 9.5 Drain mm φ18.0 φ18.0

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

Indoor Unit FLKS25BVMB FLKS35BVMB

Front Panel Color Almond White Almond White

Air Flow Rate

m³/min

(cfm)

H 7.6 (268) 8.6 (304)

M 6.8 (240) 7.6 (268)

L 6.0 (212) 6.6 (233)

SL 5.2 (184) 5.6 (198)

Fan

Type Sirocco Fan Sirocco Fan Motor Output W 34 34

Speed Steps 5 Steps, Silent and Auto 5 Steps, Silent and Auto Air Direction Control Right, Left, Horizontal and Downward Right, Left, Horizontal and Downward Air Filter Removable/Washable/Mildew Proof Removable/Washable/Mildew Proof Running Current (Rated) A 0.34 0.36 Power Consumption (Rated) W 74 78 Power Factor % 94.6 94.2 Temperature Control Microcomputer Control Microcomputer Control Dimensions (H×W×D) mm 490×1,050×200 490×1,050×200 Packaged Dimensions(W×D×H) mm 1,100×566×280 1,100×566×280 Weight kg 16 16 Gross Weight kg 22 22 Operation

Sound

H/M/L/SL dBA 37 / 34 / 31 / 28 38 / 35 / 32 / 29 Sound Power H dBA 53 54

Outdoor Unit RKS25BVMB RKS35BVMB

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23GXD#A 1YC23GXD#A

Motor Output W 600 600 Refrigerant Oil

Type FVC50K FVC50K

Charge L 0.4 0.4 Refrigerant

Type R410A R410A

Charge kg 0.96 1.06 Air Flow Rate m³/min (cfm)

H 25.3 (893) 25.3 (893) L 17.0 (600) 17.0 (600)

Fan

Type Propeller Propeller

Motor Output W 19 19 Running Current (Rated) A 3.46 5.34 Power Consumption (Rated) W 641 1,142 Power Factor % 80.5 93.0 Starting Current A 3.8 5.7 Dimensions (H×W×D) mm 560×695×265 560×695×265 Packaged Dimensions(H×W×D) mm 797×310×599 797×310×599 Weight kg 37 37 Gross Weight kg 40 40 Operation

Sound

H/L dBA 46 / 43 47 / 44 Sound Power H dBA 59 60

Drawing No. 3D040166A 3D040167A

Conversion Formulae

kcal/h=kW×860

Btu/h=kW×3414

cfm=m³/min×35.3

Cooling Piping Length

Indoor ; 27˚CDB/19˚CWB

Outdoor ; 35˚CDB/24˚CWB

7.5m

SiBE05-311 Specifications

Specifications 7

230V, 50Hz

Notes:  MAX. interunit piping length: 25m

 MAX. interunit height difference: 15m  Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m  The data are based on the conditions shown in the table below.

Models

Indoor Units FLK25BVMB FLK35BVMB Outdoor Units RK25BVMB RK35BVMB

Capacity Rated (Min.~Max.)

kW 2.5 (1.3~3.0) 3.43 (1.4~3.8)

Btu/h 8,550 (4,450~10,250) 11,700 (4,450~13,000)

kcal/h 2,150 (1,120~2,580) 2,950 (1,120~3,270) Moisture Removal L/h 1.2 1.9 Running Current (Rated) A 4.2 5.9 Power Consumption

Rated (Min.~Max.)

W 890 (430~1,250) 1,315 (500~1,720)

Power Factor % 92.1 96.9 COP (Rated) W/W 2.81 2.61

Piping Connections

Liquid mm φ 6.4 φ 6.4 Gas mm φ 9.5 φ 9.5 Drain mm φ18.0 φ18.0

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

Indoor Unit FLK25BVMB FLK35BVMB

Front Panel Color Almond White Almond White

Air Flow Rate

m³/min (cfm)

H 7.6 (269) 8.7 (307)

M 6.8 (240) 7.7 (272)

L 6.0 (212) 6.6 (233)

Fan

Type Sirocco Fan Sirocco Fan Motor Output W 34 34

Speed Steps 5 Steps and Auto 5 Steps and Auto Air Direction Control Right, Left, Horizontal and Downward Right, Left, Horizontal and Downward Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof Running Current (Rated) A 0.32 0.36 Power Consumption (Rated) W 70 78 Power Factor % 95.1 94.2 Temperature Control Microcomputer Control Microcomputer Control Dimensions (H×W×D) mm 490×1,050×200 490×1,050×200 Packaged Dimensions (W×D×H) mm 1,100×566×280 1,100×566×280 Weight kg 16 16 Gross Weight kg 22 22 Operation

Sound

H/M/L dBA 37 / 34 / 31 38 / 35 / 32 Sound Power dBA H 53 54

Outdoor Unit RK25BVMB RK35BVMB

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23KXA#A 1YC23KXA#A

Motor Output W 600 600 Refrigerant

Oil

Type FVC50K FVC50K

Charge L 0.43 0.43 Refrigerant

Type R410A R410A

Charge kg 0.79 0.96 Air Flow Rate

m³/min 29.0 27.5

cfm 1,025 972 Fan

Type Propeller Propeller

Motor Output W 25 25 Running Current (Rated) A 3.88 5.54 Power Consumption (Rated) W 820 1,237 Power Factor % 91.9 97.1 Starting Current A 4.2 5.9 Dimensions (H×W×D) mm 560×695×265 560×695×265 Packaged Dimensions (W×D×H) mm 797×310×599 797×310×599 Weight kg 34 37 Gross Weight kg 37 40 Operation Sound dBA 46 47 Sound Power dBA H 59 60 Drawing No. 3D039753B 3D039754B

Conversion Formulae

kcal/h=kW×860

Btu/h=kW×3414

cfm=m³/min×35.3

Cooling Piping Length

Indoor ; 27˚CDB/19˚CWB

Outdoor ; 35˚CDB/24˚CWB

7.5m

Specifications SiBE05-311

8 Specifications

1.2 Heat Pump

230V, 50Hz

Notes:  MAX. interunit piping length: 20m

 MAX. interunit height difference: 15m  Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m  The data are based on the conditions shown in the table below.

Models

Indoor Units FLXS25BVMB FLXS35BVMB

Outdoor Units

RXS25BVMB RXS35BVMB

Cooling Heating Cooling Heating

Capacity Rated (Min.~Max.)

kW 2.5 (1.0~3.0) 3.4 (1.0~5.0) 3.5 (1.0~3.7) 4.5 (1.0~5.0)

Btu/h 8,550 (3,400~10,250) 11,600 (3,400~17,050) 11,950 (3,400~12,600) 15,350 (3,400~17,050)

kcal/h 2,150 (860~2,580) 2,920 (860~4,300) 3,010 (860~3,180) 3,870 (860~4,300) Moisture Removal L/h 1.2 — 1.9 — Running Current (Rated) A 3.8 4.5 5.7 6.3 Power Consumption

Rated (Min.~Max.)

W 715 (240~925) 940 (240~1,430) 1,220 (240~1,300) 1,380 (240~1,830)

Power Factor % 81.8 90.8 93.1 95.2 COP (Rated) W/W 3.50 3.62 2.87 3.26

Piping Connections

Liquid mm φ 6.4 φ 6.4 Gas mm φ 9.5 φ 9.5 Drain mm φ18.0 φ18.0

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

Indoor Units FLXS25BVMB FLXS35BVMB

Front Panel Color Almond White Almond White

Air Flow Rate

m³/min (cfm)

H 7.6 (268) 9.2 (325) 8.6 (304) 9.8 (346)

M 6.8 (240) 8.3 (293) 7.6 (268) 8.9 (314)

L 6.0 (212) 7.4 (261) 6.6 (233) 8.0 (282)

SL 5.2 (184) 6.6 (233) 5.6 (198) 7.2 (254)

Fan

Type Sirocco Fan Sirocco Fan Motor Output W 34 34

Speed Steps 5 Steps, Silent and Auto 5 Steps, Silent and Auto Air Direction Control Right, Left, Horizontal and Downward Right, Left, Horizontal and Downward Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof Running Current (Rated) A 0.32 0.34 0.36 0.36 Power Consumption (Rated) W 70 74 78 78 Power Factor % 95.1 94.6 94.2 94.2 Temperature Control Microcomputer Control Microcomputer Control Dimensions (H×W×D) mm 490×1,050×200 490×1,050×200 Packaged Dimensions (W×D×H) mm 1,100×566×280 1,100×566×280 Weight kg 16 16 Gross Weight kg 22 22 Operation

Sound

H/M/L/SL dBA 37 / 34 / 31 / 28 37 / 34 / 31 / 29 38 / 35 / 32 / 29 39 / 36 / 33 / 30 Sound Power dBA H 53 — 54 —

Outdoor Units RXS25BVMB RXS35BVMB

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23GXD#A 1YC23GXD#A

Motor Output W 600 600 Refrigerant

Oil

Type FVC50K FVC50K

Charge L 0.4 0.4 Refrigerant

Type R410A R410A

Charge kg 0.96 1.06 Air Flow Rate m³/min (cfm)

H 25.3 (893) 22.8 (805) 25.3 (893) 22.8 (805) L 17.0 (600) 15.3 (540) 17.0 (600) 15.3 (540)

Fan

Type Propeller Propeller

Motor Output W 19 19 Running Current (Rated) A 3.48 4.16 5.34 5.94 Power Consumption (Rated) W 645 866 1,142 1,302 Power Factor % 80.6 90.5 93.0 95.3 Starting Current A 4.5 6.3 Dimensions (H×W×D) mm 560×695×265 560×695×265 Packaged Dimensions (W×D×H) mm 797×310×599 797×310×599 Weight kg 37 37 Gross Weight kg 40 40 Operation

Sound

H/L dBA 46 / 43 47 / 44 47 / 44 48 / 45 Sound Power dBA H 59 — 60 —

Drawing No. 3D040174A 3D040175A

Conversion Formulae

kcal/h=kW×860

Btu/h=kW×3414

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

7.5m

SiBE05-311 Specifications

Specifications 9

230V, 50Hz

Notes:  MAX. interunit piping length: 15m

 MAX. interunit height difference: 15m  Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m  The data are based on the conditions shown in the table below.

Models

Indoor Units FLX25BVMB FLX35BVMB

Outdoor Units

RX25BVMB RX35BVMB

Cooling Heating Cooling Heating

Capacity Rated (Min.~Max.)

kW 2.5 (1.3~3.0) 3.3 (1.3~4.0) 3.43 (1.4~3.8) 4.1 (1.4~5.0)

Btu/h 8,550 (4,450~10,250) 11,300 (4,450~13,650) 11,700 (4,800~13,000) 14,000 (4,800~17,100)

kcal/h 2,150 (1,120~2,580) 2,840 (1,120~3,440) 2,950 (1,200~3,270) 3,530 (1,200~4,300) Moisture Removal L/h 1.2 — 1.9 — Running Current (Rated) A 4.2 4.9 5.9 6.0 Power Consumption

Rated (Min.~Max.)

W 890 (430~1,250) 1,080 (350~1,350) 1,315 (500~1,720) 1,355 (405~1,900)

Power Factor % 92.1 95.8 96.9 98.2 COP (Rated) W/W 2.81 3.06 2.61 3.03

Piping Connections

Liquid mm φ 6.4 φ 6.4 Gas mm φ 9.5 φ 9.5 Drain mm φ18.0 φ18.0

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

Indoor Units FLX25BVMB FLX35BVMB

Front Panel Color Almond White Almond White

Air Flow Rate

m³/min (cfm)

H 7.6 (269) 9.2 (325) 8.7 (307) 10.0 (353)

M 6.8 (240) 8.3 (293) 7.7 (272) 9.0 (318)

L 6.0 (212) 7.4 (261) 6.6 (233) 8.0 (283)

Fan

Type Sirocco Fan Sirocco Fan Motor Output W 34 34

Speed Steps 5 Steps and Auto 5 Steps and Auto Air Direction Control Right, Left, Horizontal and Downward Right, Left, Horizontal and Downward Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof Running Current (Rated) A 0.32 0.34 0.36 0.36 Power Consumption (Rated) W 70 74 78 78 Power Factor % 95.1 94.6 94.2 94.2 Temperature Control Microcomputer Control Microcomputer Control Dimensions (H×W×D) mm 490×1,050×200 490×1,050×200 Packaged Dimensions (W×D×H) mm 1,100×566×280 1,100×566×280 Weight kg 16 16 Gross Weight kg 22 22 Operation

Sound

H/M/L dBA 37 / 34 / 31 37 / 34 / 31 38 / 35 / 32 39 / 36 / 33 Sound Power dBA H 55 — 54 —

Outdoor Units RX25BVMB RX35BVMB

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23KXA#A 1YC23KXA#A

Motor Output W 600 600 Refrigerant

Oil

Type FVC50K FVC50K

Charge L 0.43 0.43 Refrigerant

Type R410A R410A

Charge kg 0.79 0.96 Air Flow Rate

m³/min 29.0 25.5 27.5 23.5

cfm 1,025 901 972 830 Fan

Type Propeller Propeller

Motor Output W 25 25 Running Current (Rated) A 3.88 4.56 5.54 5.64 Power Consumption (Rated) W 820 1,006 1,237 1,277 Power Factor % 91.9 95.9 97.1 98.4 Starting Current A 4.9 6.0 Dimensions (H×W×D) mm 560×695×265 560×695×265 Packaged Dimensions (W×D×H) mm 797×310×599 797×310×599 Weight kg 34 37 Gross Weight kg 37 40 Operation Sound dBA 46 47 47 48 Sound Power dBA H 59 — 60 — Drawing No. 3D039759A 3D039760A

Conversion Formulae

kcal/h=kW×860

Btu/h=kW×3414

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

7.5m

Specifications SiBE05-311

10 Specifications

SiBE05-311

Printed Circuit Board Connector Wiring Diagram 11

Part 3

Printed Circuit Board

Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram..................................12

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

1.2 Outdoor Unit..........................................................................................14

Printed Circuit Board Connector Wiring Diagram SiBE05-311

12 Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

1.1 Indoor Unit

Connectors

Note: Other designations

1) S6 Connector for swing motor

2) S7 Connector for fan motor

3) S21 Connector for centralized control (HA)

4) S24 Connector for display PCB

5) S25, S27, S36 Connector for control PCB

6) S26 Connector for signal receiver PCB

7) S31 (RTH) Connector for room temperature thermistor

8) S32 Connector for heat exchanger thermistor

9) S37 Connector for power supply PCB

1) V1 Varistor

2) JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery function

∗ Refer to page 155 for detail.

3) SW1 Operation switch

4) SW2 Select switch for ceiling / floor

5) LED1 LED for operation (green)

6) LED2 LED for timer (yellow)

7) LED3 LED for Home Leave operation (red)

8) FU1 Fuse (3.15A)

SiBE05-311 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 13

PCB Detail PCB (1) : Control PCB (indoor unit)

PCB (2) : Power Supply PCB (indoor unit)

PCB (3) : Display PCB PCB (4) : Signal Receiver PCB

SW2

S24

JC JB JA S37

S32

S26

S21

(R2958)

S36

FU1

(R2959)

LED3 LED2 LED1

S25

(R2960)

SW1

S27

(R2961)

S31(RTH)

Printed Circuit Board Connector Wiring Diagram SiBE05-311

14 Printed Circuit Board Connector Wiring Diagram

1.2 Outdoor Unit

Printed circuit board (1) Printed circuit board (2)

Name of Connector

Outline of PCB

1) S10 Connector for PCB (2)

2) S11 Connector for PCB (1)

3) S30 Connector for compressor motor

4) S70 Connector for fan motor

5) S80 Connector for four way valve coil (Heat pump only)

6) S90 Connector for thermistor

PCB(1)

FU1

FU2

S11 PCB(2)

S30

S20S90S80S70

S10

1P101935-1K

V U

SiBE05-311 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 15

Detail of PCB (1)

Detail of PCB (2)

Connect to S11 on PCB (2)

3P100242-1B

Printed Circuit Board Connector Wiring Diagram SiBE05-311

16 Printed Circuit Board Connector Wiring Diagram

SiBE05-311

Function and Control 17

Part 4

Function and Control