Daikin FLKS35BAVMB, RKS35G2V1B, RKS25E2V1B, RKS35E2V1B, RKS35G2V1B9 Service Manual

SiENBE05-722_A

Service

Manual

Inverter Pair

Floor/Ceiling Suspended Dual Type
BA-Series

[Applied Models]

 Inverter Pair: Cooling only
 Inverter Pair: Heat Pump

SiENBE05-722_A

Service

Manual

Inverter Pair

Floor/Ceiling Suspended Dual Type
BA-Series

[Applied Models]

 Inverter Pair: Cooling only
 Inverter Pair: Heat Pump

SiENBE05-722_A

i Table of Contents

Inverter Pair

Floor / Ceiling Suspended

Dual Type

BA-Series

zCooling Only

Indoor Unit

FLKS25BAVMB
FLKS35BAVMB

Outdoor Unit

RKS25E2V1B RKS25G2V1B RKS25G2V1B9
RKS35E2V1B RKS35G2V1B RKS35G2V1B9

zHeat Pump

Indoor Unit

FLXS25BAVMB
FLXS35BAVMB

Outdoor Unit

RXS25E2V1B RXS25G2V1B RXS25G2V1B9
RXS35E2V1B RXS35G2V1B RXS35G2V1B9

SiENBE05-722_A

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 .................................................................... 5

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

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

1.2 Heat Pump ...............................................................................................9

Part 3 Printed Circuit Board Connector Wiring Diagram ........... 12

1. Printed Circuit Board Connector Wiring Diagram..................................13

1.1 Indoor Unit..............................................................................................13

1.2 Outdoor Unit ...........................................................................................15

Part 4 Function and Control........................................................21

1. Main Functions......................................................................................22

1.1 Temperature Control ..............................................................................22

1.2 Frequency Principle................................................................................22

1.3 Airflow Direction Control.........................................................................24

1.4 Fan Speed Control for Indoor Units........................................................25

1.5 Program Dry Operation ..........................................................................26

1.6 Automatic Operation...............................................................................27

1.7 Thermostat Control.................................................................................28

1.8 NIGHT SET Mode ..................................................................................29

1.9 HOME LEAVE Operation .......................................................................30

1.10 Inverter POWERFUL Operation .............................................................31

1.11 Other Functions......................................................................................32

2. Function of Thermistor ..........................................................................33

3. Control Specification .............................................................................34

3.1 Mode Hierarchy ......................................................................................34

3.2 Frequency Control..................................................................................35

3.3 Controls at Mode Changing / Start-up....................................................37

3.4 Discharge Pipe Temperature Control.....................................................39

3.5 Input Current Control..............................................................................40

3.6 Freeze-up Protection Control .................................................................41

3.7 Heating Peak-cut Control .......................................................................41

3.8 Outdoor Fan Control...............................................................................42

3.9 Liquid Compression Protection Function................................................42

3.10 Defrost Control .......................................................................................43

3.11 Electronic Expansion Valve Control .......................................................44

3.12 Malfunctions ...........................................................................................47

3.13 Forced Operation Mode .........................................................................48

3.14 Standby Electricity Saving......................................................................48

SiENBE05-722_A

iii Table of Contents

Part 5 Operation Manual ............................................................. 49

1. System Configuration............................................................................50

2. Operation Manual..................................................................................51

2.1 Remote Control ......................................................................................51

2.2 Auto Dry Cool Heat Fan Operation ........................................................52

2.3 Adjusting the Airflow Direction................................................................54

2.4 POWERFUL Operation ..........................................................................56

2.5 OUTDOOR UNIT QUIET Operation.......................................................57

2.6 HOME LEAVE Operation .......................................................................58

2.7 TIMER Operation ...................................................................................60

Part 6 Service Diagnosis............................................................. 62

1. Caution for Diagnosis............................................................................63

1.1 Troubleshooting with LED ......................................................................63

2. Problem Symptoms and Measures .......................................................64

2.1 ARC433 Series.......................................................................................65

3. Troubleshooting ....................................................................................68

3.1 Error Codes and Description ..................................................................68

3.2 Indoor Unit PCB Abnormality .................................................................69

3.3 Freeze-up Protection Control or Heating Peak-cut Control....................70

3.4 Fan Motor (AC Motor) or Related Abnormality.......................................72

3.5 Thermistor or Related Abnormality (Indoor Unit)....................................73

3.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit) ......74

3.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit) ...............75

3.8 Outdoor Unit PCB Abnormality...............................................................76

3.9 OL Activation (Compressor Overload) ...................................................77

3.10 Compressor Lock ...................................................................................78

3.11 DC Fan Lock ..........................................................................................79

3.12 Input Overcurrent Detection ...................................................................80

3.13 Four Way Valve Abnormality..................................................................81

3.14 Discharge Pipe Temperature Control.....................................................83

3.15 High Pressure Control in Cooling ...........................................................84

3.16 Compressor System Sensor Abnormality ..............................................85

3.17 Position Sensor Abnormality ..................................................................86

3.18 DC Voltage / Current Sensor Abnormality..............................................88

3.19 Thermistor or Related Abnormality (Outdoor Unit).................................89

3.20 Electrical Box Temperature Rise............................................................91

3.21 Radiation Fin Temperature Rise ............................................................94

3.22 Output Overcurrent Detection ................................................................97

3.23 Refrigerant Shortage ..............................................................................99

3.24 Low-voltage Detection or Over-voltage Detection................................101

4. Check ..................................................................................................103

4.1 How to Check .......................................................................................103

Part 7 Removal Procedure ........................................................ 112

1. Indoor Unit...........................................................................................113

1.1 Removal of Air Filter / Front Grille ........................................................113

1.2 Removal of Front Panel........................................................................116

1.3 Removal of Horizontal Blade................................................................118

1.4 Removal of Signal Receiver Unit / Swing Motor...................................119

SiENBE05-722_A

Table of Contents iv

1.5 Removal of Discharge Grille.................................................................120

1.6 Removal of Drain Pan ..........................................................................121

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

1.8 Removal of Fan Rotor / Fan Motor.......................................................125

1.9 Removal of Indoor Heat Exchanger .....................................................127

2. Outdoor Unit - RK(X)S25/35E2V1B ....................................................129

2.1 Removal of Outer Panels / Fan Motor..................................................129

2.2 Removal of Electrical Box ....................................................................137

2.3 Removal of PCB...................................................................................141

2.4 Removal of Reactor / Partition Plate ....................................................143

2.5 Removal of Sound Blanket...................................................................145

2.6 Removal of Four Way Valve.................................................................147

2.7 Removal of Compressor.......................................................................150

3. Outdoor Unit - RK(X)S25/35G2V1B....................................................152

3.1 Removal of Outer Panels / Fan Motor..................................................152

3.2 Removal of Electrical Box ....................................................................161

3.3 Removal of Thermistors .......................................................................165

3.4 Removal of PCB...................................................................................167

3.5 Removal of Reactor / Partition Plate ....................................................170

3.6 Removal of Sound Blanket...................................................................172

3.7 Removal of Four Way Valve.................................................................173

3.8 Removal of Compressor.......................................................................176

4. Outdoor Unit - RK(X)S25/35G2V1B9..................................................178

4.1 Removal of Outer Panels / Fan Motor..................................................178

4.2 Removal of Electrical Box ....................................................................187

4.3 Removal of PCB...................................................................................190

4.4 Removal of Reactor / Partition Plate ....................................................198

4.5 Removal of Sound Blanket...................................................................200

4.6 Removal of Four Way Valve.................................................................202

4.7 Removal of Compressor.......................................................................205

Part 8 Trial Operation and Field Settings................................. 207

1. Trial Operation ....................................................................................208

2. Field Settings ......................................................................................209

2.1 When 2 Units are Installed in 1 Room..................................................209

2.2 Standby Electricity Saving....................................................................210

2.3 Facility Setting Jumper (cooling at low outdoor temperature) ..............211

2.4 Jumper and Switch Settings.................................................................212

3. A

pplication of Silicon Grease to a Power Transistor and a Diode Bridge

.213

Part 9 Appendix.........................................................................215

1. Piping Diagrams..................................................................................216

1.1 Indoor Unit............................................................................................216

1.2 Outdoor Unit .........................................................................................217

2. Wiring Diagrams..................................................................................219

2.1 Indoor Unit............................................................................................219

2.2 Outdoor Unit .........................................................................................219

Introduction SiENBE05-722_A

v

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.

SiENBE05-722_A Introduction

vi

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 SiENBE05-722_A

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.

SiENBE05-722_A Introduction

viii

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.

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 control, 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.

Introduction SiENBE05-722_A

ix

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:

Be sure to measure the insulation resistance after the repair, and make sure
that the resistance is 1 MΩ or 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.

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.

SiENBE05-722_A

List of Functions 1

Part 1

List of Functions

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

Functions SiENBE05-722_A

2 List of Functions

1. Functions

Category Functions

FLKS25/35BAVMB

RKS25/35E2V1B

FLXS25/35BAVMB

RXS25/35E2V1B

Category Functions

FLKS25/35BAVMB

RKS25/35E2V1B

FLXS25/35BAVMB

RXS25/35E2V1B

Basic
Function

Inverter (with Inverter Power Control) {{Health &

Clean

Air-Purifying Filter {{

Operation Limit for Cooling (°CDB)

–10
~46

H

–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 — — Good-Sleep Cooling Operation — —

Power-Airflow Dual Flaps — —

Timer WEEKLY TIMER Operation — —

24-Hour ON/OFF TIMER {{

Power-Airflow Diffuser — — NIGHT SET Mode {{

Wide-Angle Louvers — — Worry Free

“Reliability &
Durability”

Auto-Restart (after Power Failure) {{

Vertical Auto-Swing (Up and Down) {{ Self-Diagnosis (Digital, LED) Display {{

Horizontal Auto-Swing (Right and Left) — — Wiring Error Check Function — —

3-D Airflow — —

Anti-Corrosion Treatment of Outdoor
Heat Exchanger

{{

Comfort
Control

Auto Fan Speed {{

Indoor Unit Quiet Operation {{Flexibility

Multi-Split/Split Type Compatible Indoor
Unit

{{

NIGHT QUIET Mode (Automatic) — —

OUTDOOR UNIT QUIET Operation
(Manual)

{{ Flexible Voltage Correspondence — —

INTELLIGENT EYE Operation — — Chargeless

10 m10

m

Quick Warming Function
(Preheating Operation)

— { Either Side Drain (Right or Left) — —

Hot-Start Function — { Power Selection — —

Automatic Defrosting — { Remote

Control

5-Rooms Centralized Controller (Option) {{

Operation Automatic Operation — {

Remote Control Adapter
(Normal Open Pulse Contact) (Option)

{{

Program Dry Operation {{

Fan Only {{

Remote Control Adapter
(Normal Open Contact) (Option)

{{

Lifestyle
Convenience

New POWERFUL Operation
(Non-Inverter)

——

Inverter POWERFUL Operation {{ DIII-NET Compatible (Adapter) (Option) {{

Priority-Room Setting — — Remote

Control

Wireless {{

COOL/HEAT Mode Lock — — Wired (Option) — —

HOME LEAVE Operation {{

ECONO Operation — —

Indoor Unit ON/OFF Button {{

Signal Receiving Sign {{

R/C with Back Light — —

Temperature Display — —

Note: { : Holding Functions

— : No Functions

H

: Lower limit can be extended to –15°C by cutting

jumper. (facility use only)

SiENBE05-722_A Functions

List of Functions 3

Category Functions

FLKS25/35BAVMB

RKS25/35G2V1B

FLXS25/35BAVMB

RXS25/35G2V1B

Category Functions

FLKS25/35BAVMB

RKS25/35G2V1B

FLXS25/35BAVMB

RXS25/35G2V1B

Basic
Function

Inverter (with Inverter Power Control) {{Health &

Clean

Air-Purifying Filter {{

Operation Limit for Cooling (°CDB)

–10
~46

H

–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 — — Good-Sleep Cooling Operation — —

Power-Airflow Dual Flaps — —

Timer WEEKLY TIMER Operation — —

24-Hour ON/OFF TIMER {{

Power-Airflow Diffuser — — NIGHT SET Mode {{

Wide-Angle Louvers — — Worry Free

“Reliability &
Durability”

Auto-Restart (after Power Failure) {{

Vertical Auto-Swing (Up and Down) {{ Self-Diagnosis (Digital, LED) Display {{

Horizontal Auto-Swing (Right and Left) — — Wiring Error Check Function — —

3-D Airflow — —

Anti-Corrosion Treatment of Outdoor
Heat Exchanger

{{

Comfort
Control

Auto Fan Speed {{

Indoor Unit Quiet Operation {{Flexibility

Multi-Split/Split Type Compatible Indoor
Unit

{{

NIGHT QUIET Mode (Automatic) — —

OUTDOOR UNIT QUIET Operation
(Manual)

{{ Flexible Voltage Correspondence — —

INTELLIGENT EYE Operation — — Chargeless

10 m10

m

Quick Warming Function
(Preheating Operation)

— { Either Side Drain (Right or Left) — —

Hot-Start Function — { Power Selection — —

Automatic Defrosting — { Remote

Control

5-Rooms Centralized Controller (Option) {{

Operation Automatic Operation — {

Remote Control Adapter
(Normal Open Pulse Contact) (Option)

{{

Program Dry Operation

{{

Fan Only

{{

Remote Control Adapter
(Normal Open Contact) (Option)

{{

Lifestyle
Convenience

New POWERFUL Operation
(Non-Inverter)

——

Inverter POWERFUL Operation {{ DIII-NET Compatible (Adapter) (Option) {{

Priority-Room Setting — — Remote

Control

Wireless {{

COOL/HEAT Mode Lock — — Wired (Option) — —

HOME LEAVE Operation {{

ECONO Operation — —

Indoor Unit ON/OFF Button {{

Signal Receiving Sign {{

R/C with Back Light — —

Temperature Display — —

Note: { : Holding Functions

— : No Functions

H

: Lower limit can be extended to –15°C by cutting

jumper. (facility use only)

Functions SiENBE05-722_A

4 List of Functions

Category Functions

FLKS25/35BAVMB

RKS25/35G2V1B9

FLXS25/35BAVMB

RXS25/35G2V1B9

Category Functions

FLKS25/35BAVMB

RKS25/35G2V1B9

FLXS25/35BAVMB

RXS25/35G2V1B9

Basic
Function

Inverter (with Inverter Power Control) {{Health &

Clean

Air-Purifying Filter {{

Operation Limit for Cooling (°CDB)

–10
~46

H

–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 — — Good-Sleep Cooling Operation — —

Power-Airflow Dual Flaps — —

Timer WEEKLY TIMER Operation — —

24-Hour ON/OFF TIMER {{

Power-Airflow Diffuser — — NIGHT SET Mode {{

Wide-Angle Louvers — — Worry Free

“Reliability &
Durability”

Auto-Restart (after Power Failure) {{

Vertical Auto-Swing (Up and Down) {{ Self-Diagnosis (Digital, LED) Display {{

Horizontal Auto-Swing (Right and Left) — — Wiring Error Check Function — —

3-D Airflow — —

Anti-Corrosion Treatment of Outdoor
Heat Exchanger

{{

Comfort
Control

Auto Fan Speed {{

Indoor Unit Quiet Operation {{Flexibility

Multi-Split/Split Type Compatible Indoor
Unit

{{

NIGHT QUIET Mode (Automatic) — —

OUTDOOR UNIT QUIET Operation
(Manual)

{{ Flexible Voltage Correspondence — —

INTELLIGENT EYE Operation — — Chargeless

10 m10

m

Quick Warming Function
(Preheating Operation)

— { Either Side Drain (Right or Left) — —

Hot-Start Function — { Power Selection — —

Automatic Defrosting — { Remote

Control

5-Rooms Centralized Controller (Option) {{

Operation Automatic Operation — {

Remote Control Adapter
(Normal Open Pulse Contact) (Option)

{{

Program Dry Operation

{{

Fan Only

{{

Remote Control Adapter
(Normal Open Contact) (Option)

{{

Lifestyle
Convenience

New POWERFUL Operation
(Non-Inverter)

——

Inverter POWERFUL Operation {{ DIII-NET Compatible (Adapter) (Option) {{

Priority-Room Setting — — Remote

Control

Wireless {{

COOL/HEAT Mode Lock — — Wired (Option) — —

HOME LEAVE Operation {{

ECONO Operation — —

Indoor Unit ON/OFF Button {{

Signal Receiving Sign {{

R/C with Back Light — —

Temperature Display — —

Note: { : Holding Functions

— : No Functions

H

: Lower limit can be extended to –15°C by cutting

jumper. (facility use only)

SiENBE05-722_A

Specifications 5

Part 2

Specifications

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

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

1.2 Heat Pump ...............................................................................................9

Specifications SiENBE05-722_A

6 Specifications

1. Specifications

1.1 Cooling Only

50 Hz, 220 - 230 - 240 V

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

Model

Indoor Units FLKS25BAVMB FLKS35BAVMB
Outdoor Units RKS25E2V1B RKS35E2V1B

Capacity
Rated (Min. ~ Max.)

kW 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8)

Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000)

kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)
Moisture Removal L/h 1.2 1.9
Running Current (Rated) A 3.7 - 3.6 - 3.4 5.3 - 5.1 - 4.9
Power Consumption

Rated (Min. ~ Max.)

W 650 (300 ~ 860) 1,130 (300 ~ 1,260)

Power Factor % 79.9 - 78.5 - 79.7 96.9 - 96.3 - 96.1
COP Rated (Min. ~ Max.) W/W 3.85 (4.00 ~ 3.49) 3.10 (4.00 ~ 3.02)

Piping
Connections

Liquid mm φ 6.4 φ 6.4
Gas mm φ 9.5 φ 9.5

Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 20 20
Max. Interunit Height Difference m 15 15
Chargeless m 10 10
Amount of Additional Charge

of Refrigerant

g/m 20 20

Indoor Unit FLKS25BAVMB FLKS35BAVMB

Front Panel Color Almond White Almond White

Airflow 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, 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 0.33 - 0.32 - 0.31 0.38 - 0.36 - 0.35
Power Consumption (Rated) W 70 - 70 - 70 78 - 78 - 78
Power Factor % 96.4 - 95.1 - 94.1 93.3 - 94.2 - 92.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 490 × 1,050 × 200 490 × 1,050 × 200
Packaged Dimensions (H × W × D) mm 280 × 1,100 × 566 280 × 1,100 × 566
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 dBA 53 54

Outdoor Unit RKS25E2V1B RKS35E2V1B

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23NXD 1YC23NXD

Motor Output W 600 600

Refrigerant Oil

Type FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant

Type R-410A R-410A

Charge kg 1.0 1.0

Airflow Rate m³/min (cfm)

H 33.5 (1,183) 33.5 (1,183)
L 23.4 (826) 23.4 (826)

Fan

Type Propeller Propeller

Motor Output W 23 23
Running Current (Rated) A 3.37 - 3.28 - 3.09 4.92 - 4.74 - 4.55
Power Consumption (Rated) W 580 - 580 - 580 1,052 - 1,052 - 1,052
Power Factor % 78.2 - 76.9 - 78.2 97.2 - 96.5 - 96.3
Starting Current A 3.7 5.3
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 617 × 882 × 363 617 × 882 × 363
Weight kg 32 32
Gross Weight kg 38 38
Operation

Sound

H / L dBA 46 / 43 47 / 44

Sound Power H dBA 61 62
Drawing No. 3D055004A 3D055005A

Conversion Formulae

kcal/h = kW × 860

Btu/h = kW × 3412

cfm = m³/min × 35.3

Cooling Piping Length

Indoor ; 27°CDB / 19°CWB

Outdoor ; 35°CDB / 24°CWB

7.5 m

SiENBE05-722_A Specifications

Specifications 7

50 Hz, 220 - 230 - 240 V

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

Model

Indoor Units FLKS25BAVMB FLKS35BAVMB

Outdoor Units RKS25G2V1B RKS35G2V1B

Capacity
Rated (Min. ~ Max.)

kW 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8)

Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000)

kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)
Moisture Removal L/h 1.2 1.9
Running Current (Rated) A 3.7 - 3.6 - 3.4 5.3 - 5.1 - 4.9
Power Consumption

Rated (Min. ~ Max.)

W 650 (300 ~ 860) 1,130 (300 ~ 1,260)

Power Factor % 79.9 - 78.5 - 79.7 96.9 - 96.3 - 96.1
COP Rated (Min. ~ Max.) W/W 3.85 (4.00 ~ 3.49) 3.10 (4.00 ~ 3.02)

Piping
Connections

Liquid mm φ 6.4 φ 6.4
Gas mm φ 9.5 φ 9.5

Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 20 20
Max. Interunit Height Difference m 15 15
Chargeless m 10 10
Amount of Additional Charge

of Refrigerant

g/m 20 20

Indoor Unit FLKS25BAVMB FLKS35BAVMB

Front Panel Color Almond White Almond White

Airflow 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, 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 0.33 - 0.32 - 0.31 0.38 - 0.36 - 0.35
Power Consumption (Rated) W 70 - 70 - 70 78 - 78 - 78
Power Factor % 96.4 - 95.1 - 94.1 93.3 - 94.2 - 92.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 490 × 1,050 × 200 490 × 1,050 × 200
Packaged Dimensions (H × W × D) mm 280 × 1,100 × 566 280 × 1,100 × 566
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 dBA 53 54

Outdoor Unit RKS25G2V1B RKS35G2V1B

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23AFXD 1YC23AFXD

Motor Output W 600 600

Refrigerant Oil

Type FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant

Type R-410A R-410A

Charge kg 1.0 1.2

Airflow Rate m³/min (cfm)

H 33.5 (1,183) 36.0 (1,272)

SL 31.4 (1,109) 31.4 (1,109)

Fan

Type Propeller Propeller

Motor Output W 50 50
Running Current (Rated) A 3.37 - 3.28 - 3.09 4.92 - 4.74 - 4.55
Power Consumption (Rated) W 580 - 580 - 580 1,052 - 1,052 - 1,052
Power Factor % 78.2 - 76.9 - 78.2 97.2 - 96.5 - 96.3
Starting Current A 3.2 4.4
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 364 612 × 906 × 364
Weight kg 34 34
Gross Weight kg 40 40
Operation

Sound

H / SL dBA 46 / 43 48 / 44

Sound Power H dBA 61 63
Drawing No. 3D059861 3D059862

Conversion Formulae

kcal/h = kW × 860

Btu/h = kW × 3412

cfm = m³/min × 35.3

Cooling Piping Length

Indoor ; 27°CDB / 19°CWB

Outdoor ; 35°CDB / 24°CWB

5 m

Specifications SiENBE05-722_A

8 Specifications

50 Hz, 220 - 230 - 240 V

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

Model

Indoor Units FLKS25BAVMB FLKS35BAVMB

Outdoor Units RKS25G2V1B9 RKS35G2V1B9

Capacity
Rated (Min. ~ Max.)

kW 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8)

Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000)

kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)
Moisture Removal L/h 1.2 1.9
Running Current (Rated) A 3.7 - 3.6 - 3.4 5.3 - 5.1 - 4.9
Power Consumption

Rated (Min. ~ Max.)

W 650 (300 ~ 860) 1,130 (300 ~ 1,260)

Power Factor % 79.9 - 78.5 - 79.7 96.9 - 96.3 - 96.1
COP Rated (Min. ~ Max.) W/W 3.85 (4.00 ~ 3.49) 3.10 (4.00 ~ 3.02)

Piping
Connections

Liquid mm φ 6.4 φ 6.4
Gas mm φ 9.5 φ 9.5

Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 20 20
Max. Interunit Height Difference m 15 15
Chargeless m 10 10
Amount of Additional Charge

of Refrigerant

g/m 20 20

Indoor Unit FLKS25BAVMB FLKS35BAVMB

Front Panel Color Almond White Almond White

Airflow 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, 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 0.33 - 0.32 - 0.31 0.38 - 0.36 - 0.35
Power Consumption (Rated) W 70 - 70 - 70 78 - 78 - 78
Power Factor % 96.4 - 95.1 - 94.1 93.3 - 94.2 - 92.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 490 × 1,050 × 200 490 × 1,050 × 200
Packaged Dimensions (H × W × D) mm 280 × 1,100 × 566 280 × 1,100 × 566
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 dBA 53 54

Outdoor Unit RKS25G2V1B9 RKS35G2V1B9

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23AEXD 1YC23AEXD

Motor Output W 600 600

Refrigerant Oil

Type FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant

Type R-410A R-410A

Charge kg 1.0 1.2

Airflow Rate m³/min (cfm)

H 33.5 (1,183) 36.2 (1,278)

SL 32.7 (1,153) 32.7 (1,153)

Fan

Type Propeller Propeller

Motor Output W 23 23
Running Current (Rated) A 3.37 - 3.28 - 3.09 4.92 - 4.74 - 4.55
Power Consumption (Rated) W 580 - 580 - 580 1,052 - 1,052 - 1,052
Power Factor % 78.2 - 76.9 - 78.2 97.2 - 96.5 - 96.3
Starting Current A 3.2 4.4
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 364 612 × 906 × 364
Weight kg 34 34
Gross Weight kg 38 38
Operation

Sound

H / SL dBA 46 / 43 48 / 44

Sound Power H dBA 61 63
Drawing No. 3D065726 3D065725

Conversion Formulae

kcal/h = kW × 860

Btu/h = kW × 3412

cfm = m³/min × 35.3

Cooling Piping Length

Indoor ; 27°CDB / 19°CWB

Outdoor ; 35°CDB / 24°CWB

5 m

SiENBE05-722_A Specifications

Specifications 9

1.2 Heat Pump

50 Hz, 220 - 230 - 240 V

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

Model

Indoor Units FLXS25BAVMB FLXS35BAVMB

Outdoor Units

RXS25E2V1B RXS35E2V1B

Cooling Heating Cooling Heating

Capacity
Rated (Min. ~ Max.)

kW 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0)

Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400) 11,900 (4,100 ~ 13,000) 13,600 (4,100 ~ 17,100)

kcal/h 2,150 (1,030 ~ 2,580) 2,920 (1,030 ~ 3,870) 3,010 (1,030 ~ 3,270) 3,440 (1,030 ~ 4,300)
Moisture Removal L/h 1.2 — 1.9 —
Running Current (Rated) A 3.7 - 3.6 - 3.4 4.7 - 4.5 - 4.3 5.3 - 5.1 - 4.9 5.8 - 5.5 - 5.3
Power Consumption

Rated (Min. ~ Max.)

W 650 (300 ~ 860) 980 (290 ~ 1,490) 1,130 (300 ~ 1,260) 1,230 (290 ~ 1,850)

Power Factor % 79.9 - 78.5 - 79.7 94.8 - 94.7 - 95.0 96.9 - 96.3 - 96.1 96.4 - 97.2 - 96.7
COP Rated (Min. ~ Max.) W/W 3.85 (4.00 ~ 3.49) 3.47 (4.14 ~ 3.02) 3.10 (4.00 ~ 3.02) 3.25 (4.14 ~ 2.70)

Piping
Connections

Liquid mm φ 6.4 φ 6.4
Gas mm φ 9.5 φ 9.5

Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 20 20
Max. Interunit Height Difference m 15 15
Chargeless m 10 10
Amount of Additional Charge

of Refrigerant

g/m 20 20

Indoor Unit FLXS25BAVMB FLXS35BAVMB

Front Panel Color Almond White Almond White

Airflow 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, 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 0.33 - 0.32 - 0.31 0.36 - 0.34 - 0.33 0.38 - 0.36 - 0.35 0.38 - 0.36 - 0.35
Power Consumption (Rated) W 70 - 70 - 70 74 - 74 - 74 78 - 78 - 78 78 - 78 - 78
Power Factor % 96.4 - 95.1 - 94.1 93.4 - 94.6 - 93.4 93.3 - 94.2 - 92.9 93.3 - 94.2 - 92.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 490 × 1,050 × 200 490 × 1,050 × 200
Packaged Dimensions (H × W × D) mm 280 × 1,100 × 566 280 × 1,100 × 566
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 53 53 54 55

Outdoor Unit RXS25E2V1B RXS35E2V1B

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23NXD 1YC23NXD

Motor Output W 600 600

Refrigerant
Oil

Model FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant

Model R-410A R-410A

Charge kg 1.0 1.0

Airflow Rate m³/min (cfm)

H 33.5 (1,183) 30.2 (1,066) 33.5 (1,183) 30.2 (1,066)

L 23.4 (826) 28.3 (999) 23.4 (826) 28.3 (999)

Fan

Type Propeller Propeller

Motor Output W 23 23
Running Current (Rated) A 3.37 - 3.28 - 3.09 4.34 - 4.16 - 3.97 4.92 - 4.74 - 4.55 5.42 - 5.14 - 4.95
Power Consumption (Rated) W 580 - 580 - 580 906 - 906 - 906 1,052 - 1,052 - 1,052 1,152 - 1,152 - 1,152
Power Factor % 78.2 - 76.9 - 78.2 94.9 - 94.7 - 95.1 97.2 - 96.5 - 96.3 96.6 - 97.4 - 97.0
Starting Current A 4.7 5.8
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 617 × 882 × 363 617 × 882 × 363
Weight kg 32 32
Gross Weight kg 38 38
Operation

Sound

H / L dBA 46 / 43 47 / 44 47 / 44 48 / 45

Sound Power H dBA 61 62 62 63
Drawing No. 3D055002A 3D055003A

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

7.5 m

Specifications SiENBE05-722_A

10 Specifications

50 Hz, 220 - 230 - 240 V

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

Model

Indoor Units FLXS25BAVMB FLXS35BAVMB

Outdoor Units

RXS25G2V1B RXS35G2V1B

Cooling Heating Cooling Heating

Capacity
Rated (Min. ~ Max.)

kW 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0)

Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400) 11,900 (4,100 ~ 13,000) 13,600 (4,100 ~17,100)

kcal/h 2,150 (1,030 ~ 2,580) 2,920 (1,030 ~ 3,870) 3,010 (1,030 ~ 3,270) 3,440 (1,030 ~ 4,300)
Moisture Removal L/h 1.2 — 1.9 —
Running Current (Rated) A 3.7 - 3.6 - 3.4 4.7 - 4.5 - 4.3 5.3 - 5.1 - 4.9 5.8 - 5.5 - 5.3
Power Consumption

Rated (Min. ~ Max.)

W 650 (300 ~ 860) 980 (290 ~ 1,490) 1,130 (300 ~ 1,260) 1,230 (290 ~ 1,850)

Power Factor % 79.9 - 78.5 - 79.7 94.8 - 94.7 - 95.0 96.9 - 96.3 - 96.1 96.4 - 97.2 - 96.7
COP Rated (Min. ~ Max.) W/W 3.85 (4.00 ~ 3.49) 3.47 (4.14 ~ 3.02) 3.10 (4.00 ~ 3.02) 3.25 (4.14 ~ 2.70)

Piping
Connections

Liquid mm φ 6.4 φ 6.4
Gas mm φ 9.5 φ 9.5

Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 20 20
Max. Interunit Height Difference m 15 15
Chargeless m 10 10
Amount of Additional Charge

of Refrigerant

g/m 20 20

Indoor Unit FLXS25BAVMB FLXS35BAVMB

Front Panel Color Almond White Almond White

Airflow 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, 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 0.33 - 0.32 - 0.31 0.36 - 0.34 - 0.33 0.38 - 0.36 - 0.35 0.38 - 0.36 - 0.35
Power Consumption (Rated) W 70 - 70 - 70 74 - 74 - 74 78 - 78 - 78 78 - 78 - 78
Power Factor % 96.4 - 95.1 - 94.1 93.4 - 94.6 - 93.4 93.3 - 94.2 - 92.9 93.3 - 94.2 - 92.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 490 × 1,050 × 200 490 × 1,050 × 200
Packaged Dimensions (H × W × D) mm 280 × 1,100 × 566 280 × 1,100 × 566
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 53 53 54 55

Outdoor Unit RXS25G2V1B RXS35G2V1B

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23AFXD 1YC23AFXD

Motor Output W 600 600

Refrigerant
Oil

Model FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant

Model R-410A R-410A

Charge kg 1.0 1.2

Airflow Rate m³/min (cfm)

H 33.5 (1,183) 30.2 (1,066) 36.0 (1,272) 30.2 (1,066)

SL 31.4 (1,109) 22.6 (798) 31.4 (1,109) 22.6 (798)

Fan

Type Propeller Propeller

Motor Output W 50 50
Running Current (Rated) A 3.37 - 3.28 - 3.09 4.34 - 4.16 - 3.97 4.92 - 4.74 - 4.55 5.42 - 5.14 - 4.95
Power Consumption (Rated) W 580 - 580 - 580 906 - 906 - 906 1,052 - 1,052 - 1,052 1,152 - 1,152 - 1,152
Power Factor % 78.2 - 76.9 - 78.2 94.9 - 94.7 - 95.1 97.2 - 96.5 - 96.3 96.6 - 97.4 - 97.0
Starting Current A 4.3 4.8
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 364 612 × 906 × 364
Weight kg 34 34
Gross Weight kg 40 40
Operation

Sound

H / SL dBA 46 / 43 47 / 44 48 / 44 48 / 45

Sound Power H dBA 61 62 63 63
Drawing No. 3D059828 3D059829

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

SiENBE05-722_A Specifications

Specifications 11

50 Hz, 220 - 230 - 240 V

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

Model

Indoor Units FLXS25BAVMB FLXS35BAVMB

Outdoor Units

RXS25G2V1B9 RXS35G2V1B9

Cooling Heating Cooling Heating

Capacity
Rated (Min. ~ Max.)

kW 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0)

Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400) 11,900 (4,100 ~ 13,000) 13,600 (4,100 ~ 17,100)

kcal/h 2,150 (1,030 ~ 2,580) 2,920 (1,030 ~ 3,870) 3,010 (1,030 ~ 3,270) 3,440 (1,030 ~ 4,300)
Moisture Removal L/h 1.2 — 1.9 —
Running Current (Rated) A 3.7 - 3.6 - 3.4 4.7 - 4.5 - 4.3 5.3 - 5.1 - 4.9 5.8 - 5.5 - 5.3
Power Consumption

Rated (Min. ~ Max.)

W 650 (300 ~ 860) 980 (290 ~ 1,490) 1,130 (300 ~ 1,260) 1,230 (290 ~ 1,850)

Power Factor % 79.9 - 78.5 - 79.7 94.8 - 94.7 - 95.0 96.9 - 96.3 - 96.1 96.4 - 97.2 - 96.7
COP Rated (Min. ~ Max.) W/W 3.85 (4.00 ~ 3.49) 3.47 (4.14 ~ 3.02) 3.10 (4.00 ~ 3.02) 3.25 (4.14 ~ 2.70)

Piping
Connections

Liquid mm φ 6.4 φ 6.4
Gas mm φ 9.5 φ 9.5

Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 20 20
Max. Interunit Height Difference m 15 15
Chargeless m 10 10
Amount of Additional Charge

of Refrigerant

g/m 20 20

Indoor Unit FLXS25BAVMB FLXS35BAVMB

Front Panel Color Almond White Almond White

Airflow 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, 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 0.33 - 0.32 - 0.31 0.36 - 0.34 - 0.33 0.38 - 0.36 - 0.35 0.38 - 0.36 - 0.35
Power Consumption (Rated) W 70 - 70 - 70 74 - 74 - 74 78 - 78 - 78 78 - 78 - 78
Power Factor % 96.4 - 95.1 - 94.1 93.4 - 94.6 - 93.4 93.3 - 94.2 - 92.9 93.3 - 94.2 - 92.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 490 × 1,050 × 200 490 × 1,050 × 200
Packaged Dimensions (H × W × D) mm 280 × 1,100 × 566 280 × 1,100 × 566
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 53 53 54 55

Outdoor Unit RXS25G2V1B9 RXS35G2V1B9

Casing Color Ivory White Ivory White

Compressor

Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 1YC23AEXD 1YC23AEXD

Motor Output W 600 600

Refrigerant
Oil

Model FVC50K FVC50K

Charge L 0.375 0.375

Refrigerant

Model R-410A R-410A

Charge kg 1.0 1.2

Airflow Rate m³/min (cfm)

H 33.5 (1,183) 28.3 (999) 36.0 (1,272) 28.3 (999)

SL 30.1 (1,064) 25.6 (905) 30.1 (1,064) 25.6 (905)

Fan

Type Propeller Propeller

Motor Output W 23 23
Running Current (Rated) A 3.37 - 3.28 - 3.09 4.34 - 4.16 - 3.97 4.92 - 4.74 - 4.55 5.42 - 5.14 - 4.95
Power Consumption (Rated) W 580 - 580 - 580 906 - 906 - 906 1,052 - 1,052 - 1,052 1,152 - 1,152 - 1,152
Power Factor % 78.2 - 76.9 - 78.2 94.9 - 94.7 - 95.1 97.2 - 96.5 - 96.3 96.6 - 97.4 - 97.0
Starting Current A 4.3 4.8
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 364 612 × 906 × 364
Weight kg 34 34
Gross Weight kg 38 38
Operation

Sound

H / SL dBA 46 / 43 47 / 44 48 / 44 48 / 45

Sound Power H dBA 61 62 63 63
Drawing No. 3D065720 3D065721

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

SiENBE05-722_A

12 Printed Circuit Board Connector Wiring Diagram

Part 3

Printed Circuit Board

Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram..................................13

1.1 Indoor Unit..............................................................................................13

1.2 Outdoor Unit ...........................................................................................15

SiENBE05-722_A Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 13

1. Printed Circuit Board Connector Wiring Diagram

1.1 Indoor Unit

Connectors and
Other Parts

PCB (1): Control PCB

PCB (2): Power Supply PCB

PCB (3): Display PCB

PCB (4): Signal Receiver PCB

1) S6 Connector for swing motor (horizontal swing)

2) S7 Connector for AC fan motor

3) S21 Connector for centralized control (HA)

4) S24 Connector for display PCB

5) S26 Connector for signal receiver PCB

6) S32 Connector for indoor heat exchanger thermistor

7) S37 Connector for power supply PCB

8) JA Address setting jumper
∗ Refer to page 209 for detail.

JB Fan speed setting when compressor stops for thermostat OFF

JC Power failure recovery function

∗ Refer to page 212 for detail.

9) SW2 Select switch for installation (ceiling or floor)
∗ Refer to page 212 for detail.

10) LED A LED for service monitor (green)

1) S36 Connector for control PCB

2) H1, H2, H3 Connector for terminal board

3) H4, H5, H6 Connector for AC fan motor

4) V1 Varistor

5) FU1 Fuse (3.15A, 250V)

1) S25 Connector for control PCB

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

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

4) LED3 (H3P) LED for HOME LEAVE operation (red)

1) S27 Connector for control PCB

2) S31 (RTH) Connector for room temperature thermistor

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

Printed Circuit Board Connector Wiring Diagram SiENBE05-722_A

14 Printed Circuit Board Connector Wiring Diagram

PCB Detail PCB (1) : Control PCB

PCB (2) : Power Supply PCB

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

SW2

S7

S6

S24

JC JB JA S37

S32

S26

S21

LED A

2P084352-3

S36

FU1

H2

H3

H4

H5

H6

H1

V1

2P084361-1

LED3 LED2 LED1

S25

2P084377-5

SW1

S31 (RTH)

PbF

SW1

I

RTH

WLU

3

C1
C2

C3

EX511 REV 12

S27

S27

2P084377-5

PHOTO
2P084377-

SiENBE05-722_A Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 15

1.2 Outdoor Unit

1.2.1 RK(X)S25/35E2V1B

Connectors and
Other Parts

PCB (1): Filter PCB

PCB (2): Main PCB

1) S11 Connector for main PCB

2) HL1, HN1, S Connector for terminal board

3) E Terminal for earth

4) HC1, HC2

HL2, HN2

Connector for main PCB

5) HR1 Connector for reactor

6) FU3 Fuse (20 A, 250 V)

7) V2, V3 Varistor

1) S10 Connector for filter PCB

2) S20 Connector for electronic expansion valve coil

3) S30 Connector for compressor

4) S40 Connector for overload protector

5) S70 Connector for fan motor

6) S80 Connector for four way valve coil

7) S90 Connector for thermistors

(outdoor temperature, outdoor heat exchanger, discharge pipe)

8) HC3, HC4

HL3, HN3

Connector for filter PCB

9) HR2 Connector for reactor

10)FU1, FU2 Fuse (3.15 A, 250 V)

11)LED A LED for service monitor (green)

12)V1 Varistor

13)J5 Jumper for improvement of defrost performance

∗ Refer to page 212 for detail.

14)J8 Jumper for facility setting

∗ Refer to page 211 for detail.

Printed Circuit Board Connector Wiring Diagram SiENBE05-722_A

16 Printed Circuit Board Connector Wiring Diagram

PCB Detail PCB (1): Filter PCB

PCB (2): Main PCB

HC2

V3 V2 FU3

3P143310-1

E

HL1

HN1

S

HR1

HN2

HC1

S11

HL2

S90LED AS40S10

S30

HC3

HN3

S20 S80 V1 FU1 HL3

2P143284-6

HC4

HR2

FU2

J8

J5

S70

SiENBE05-722_A Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 17

1.2.2 RK(X)S25/35G2V1B

Connectors and
Other Parts

PCB (1): Filter PCB

PCB (2): Main PCB

1) S11 Connector for main PCB

2) HL1, HN1, S Connector for terminal board

3) E1 Terminal for earth

4) E2 Connector for terminal board (earth)

5) HL2, HN2 Connector for main PCB

6) HR1 Connector for reactor

7) FU3 Fuse (20 A, 250 V)

8) V2, V3 Varistor

1) S10 Connector for filter PCB

2) S20 Connector for electronic expansion valve coil

3) S30 Connector for compressor

4) S40 Connector for overload protector

5) S50 Connector for magnetic relay

6) S70 Connector for fan motor

7) S80 Connector for four way valve coil

8) S90 Connector for thermistors

(outdoor temperature, outdoor heat exchanger, discharge pipe)

9) HL3, HN3 Connector for filter PCB

10)HR2 Connector for reactor

11)FU1, FU2 Fuse (3.15 A, 250 V)

12)LED A LED for service monitor (green)

13)V1 Varistor

14)J5 Jumper for improvement of defrost performance

∗ Refer to page 212 for detail.

15)J8 Jumper for facility setting

∗ Refer to page 211 for detail.

Printed Circuit Board Connector Wiring Diagram SiENBE05-722_A

18 Printed Circuit Board Connector Wiring Diagram

PCB Detail PCB (1): Filter PCB

PCB (2): Main PCB

E1

E2

V2

FU3

HL1 HN1 S

S50

(on main PCB)

HL2

S11

HN2

HR1

3P203203-1

V3

S10

S20

2P203198-1

J5

J8 S90

S50S40

S70

LED A

FU2

V1S80HL3

HR2

HN3

S30

FU1

SiENBE05-722_A Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 19

1.2.3 RK(X)S25/35G2V1B9

Connectors and
Other Parts

PCB (1): Filter PCB

PCB (2): Main PCB

PCB (3): Forced Operation Button 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) S20 Connector for electronic expansion valve coil

3) S40 Connector for overload protector

4) S50 Connector for magnetic relay

5) S70 Connector for fan motor

6) S80 Connector for four way valve coil

7) S90 Connector for thermistors

(outdoor temperature, outdoor heat exchanger, discharge pipe)

8) S100 Connector for forced operation button PCB

9) HL3, HN3 Connector for filter PCB

10)HR2 Connector for reactor

11)U, V, W Connector for compressor

12)FU2 Fuse (3.15 A, 250 V)

13)LED A LED for service monitor (green)

14)V1 Varistor

15)J4 Jumper for facility setting

∗ Refer to page 211 for detail.

16)J5 Jumper for improvement of defrost performance

∗ Refer to page 212 for detail.

1) S110 Connector for main PCB

2) SW1 Forced operation ON/OFF button