Daikin FLXS-BAVMB User manual

Service
Manual
Inverter Pair
Floor / Ceiling Suspended Dual Type
BA-Series
SiBE05-722_B
[Applied Models]
●Inverter Pair : Cooling Only
●Inverter Pair : Heat Pump

SiBE05-722_B
iTable 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 RXS25J2V1B
RXS35E2V1B RXS35G2V1B RXS35G2V1B9 RXS35J2V1B

SiBE05-722_B
Table of Contents ii
1. Introduction ............................................................................................ vi
1.1 Safety Cautions ....................................................................................... vi
1.2 Used Icons ...............................................................................................x
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
Part 2 Specifications .................................................................... 6
1. Specifications ..........................................................................................7
1.1 Cooling Only.............................................................................................7
1.2 Heat Pump .............................................................................................10
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 14
1. Indoor Unit.............................................................................................15
2. Outdoor Unit..........................................................................................17
2.1 RK(X)S25/35E2V1B ...............................................................................17
2.2 RK(X)S25/35G2V1B...............................................................................19
2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B................................................21
Part 4 Function and Control........................................................ 23
1. Main Functions......................................................................................24
1.1 Temperature Control ..............................................................................24
1.2 Frequency Principle................................................................................24
1.3 Airflow Direction Control.........................................................................26
1.4 Fan Speed Control for Indoor Units........................................................27
1.5 Program Dry Operation ..........................................................................28
1.6 Automatic Operation...............................................................................29
1.7 Thermostat Control.................................................................................30
1.8 NIGHT SET Mode ..................................................................................31
1.9 HOME LEAVE Operation .......................................................................32
1.10 Inverter POWERFUL Operation .............................................................33
1.11 Other Functions......................................................................................34
2. Function of Thermistor ..........................................................................35
3. Control Specification .............................................................................36
3.1 Mode Hierarchy ......................................................................................36
3.2 Frequency Control..................................................................................37
3.3 Controls at Mode Changing / Start-up....................................................39
3.4 Discharge Pipe Temperature Control.....................................................41
3.5 Input Current Control..............................................................................42
3.6 Freeze-up Protection Control .................................................................43
3.7 Heating Peak-cut Control .......................................................................43
3.8 Outdoor Fan Control...............................................................................44
3.9 Liquid Compression Protection Function................................................44
3.10 Defrost Control .......................................................................................45
3.11 Electronic Expansion Valve Control .......................................................46
3.12 Malfunctions ...........................................................................................49

SiBE05-722_B
iii Table of Contents
Part 5 Operation Manual ............................................................. 50
1. System Configuration............................................................................51
2. Operation Manual..................................................................................52
2.1 Remote Controller ..................................................................................52
2.2 AUTO · DRY · COOL · HEAT · FAN Operation ......................................53
2.3 Adjusting the Airflow Direction................................................................55
2.4 POWERFUL Operation ..........................................................................57
2.5 OUTDOOR UNIT QUIET Operation.......................................................58
2.6 HOME LEAVE Operation .......................................................................59
2.7 TIMER Operation ...................................................................................61
Part 6 Service Diagnosis............................................................. 63
1. Troubleshooting with LED .....................................................................64
1.1 Indoor Unit..............................................................................................64
1.2 Outdoor Unit ...........................................................................................64
2. Problem Symptoms and Measures .......................................................65
3. Service Check Function ........................................................................66
3.1 ARC433 Series.......................................................................................66
4. Troubleshooting ....................................................................................69
4.1 Error Codes and Description ..................................................................69
4.2 Indoor Unit PCB Abnormality .................................................................70
4.3 Freeze-up Protection Control or Heating Peak-cut Control....................71
4.4 Fan Motor (AC Motor) or Related Abnormality.......................................73
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................74
4.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit) ......75
4.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit) ...............76
4.8 Outdoor Unit PCB Abnormality...............................................................77
4.9 OL Activation (Compressor Overload) ...................................................78
4.10 Compressor Lock ...................................................................................79
4.11 DC Fan Lock ..........................................................................................80
4.12 Input Overcurrent Detection ...................................................................81
4.13 Four Way Valve Abnormality..................................................................82
4.14 Discharge Pipe Temperature Control.....................................................84
4.15 High Pressure Control in Cooling ...........................................................85
4.16 Compressor System Sensor Abnormality ..............................................86
4.17 Position Sensor Abnormality ..................................................................87
4.18 DC Voltage / Current Sensor Abnormality..............................................89
4.19 Thermistor or Related Abnormality (Outdoor Unit).................................90
4.20 Electrical Box Temperature Rise............................................................92
4.21 Radiation Fin Temperature Rise ............................................................95
4.22 Output Overcurrent Detection ................................................................98
4.23 Refrigerant Shortage ............................................................................100
4.24 Low-voltage Detection or Over-voltage Detection................................102
5. Check ..................................................................................................104
5.1 Electronic Expansion Valve Check.......................................................104
5.2 Four Way Valve Performance Check ...................................................105
5.3 Thermistor Resistance Check ..............................................................106
5.4 Installation Condition Check.................................................................107
5.5 Discharge Pressure Check...................................................................107
5.6 Outdoor Fan System Check .................................................................108

SiBE05-722_B
Table of Contents iv
5.7 Power Supply Waveforms Check.........................................................108
5.8 Inverter Units Refrigerant System Check .............................................108
5.9 Power Module Check ...........................................................................109
5.10 “Inverter Checker” Check .....................................................................110
5.11 Rotation Pulse Check on the Outdoor Unit PCB ..................................112
5.12 Hall IC Check .......................................................................................113
5.13 Main Circuit Short Check......................................................................114
Part 7 Removal Procedure ........................................................ 116
1. Indoor Unit...........................................................................................117
1.1 Removal of Air Filters / Front Grille ......................................................117
1.2 Removal of Front Panel........................................................................120
1.3 Removal of Horizontal Blade................................................................122
1.4 Removal of Signal Receiver Unit / Swing Motor...................................123
1.5 Removal of Discharge Grille.................................................................124
1.6 Removal of Drain Pan ..........................................................................125
1.7 Removal of Electrical Box / PCBs ........................................................126
1.8 Removal of Fan Rotor / Fan Motor.......................................................129
1.9 Removal of Indoor Heat Exchanger .....................................................131
2. Outdoor Unit - RK(X)S25/35E2V1B ....................................................133
2.1 Removal of Outer Panels / Fan Motor..................................................133
2.2 Removal of Electrical Box ....................................................................141
2.3 Removal of PCB...................................................................................145
2.4 Removal of Reactor / Partition Plate ....................................................147
2.5 Removal of Sound Blankets .................................................................149
2.6 Removal of Four Way Valve.................................................................151
2.7 Removal of Compressor.......................................................................154
3. Outdoor Unit - RK(X)S25/35G2V1B....................................................156
3.1 Removal of Outer Panels / Fan Motor..................................................156
3.2 Removal of Electrical Box ....................................................................165
3.3 Removal of Thermistors .......................................................................169
3.4 Removal of PCB...................................................................................171
3.5 Removal of Reactor / Partition Plate ....................................................174
3.6 Removal of Sound Blankets .................................................................176
3.7 Removal of Four Way Valve.................................................................177
3.8 Removal of Compressor.......................................................................180
4. Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B.....................182
4.1 Removal of Outer Panels / Fan Motor..................................................182
4.2 Removal of Electrical Box ....................................................................191
4.3 Removal of PCBs .................................................................................194
4.4 Removal of Reactor / Partition Plate ....................................................202
4.5 Removal of Sound Blankets .................................................................204
4.6 Removal of Four Way Valve.................................................................206
4.7 Removal of Compressor.......................................................................209
Part 8 Trial Operation and Field Settings................................. 211
1. Pump Down Operation........................................................................212
2. Forced Cooling Operation ...................................................................213
3. Trial Operation ....................................................................................214

SiBE05-722_B
vTable of Contents
4. Field Settings ......................................................................................215
4.1 When 2 Units are Installed in 1 Room..................................................215
4.2 Standby Electricity Saving....................................................................216
4.3 Facility Setting Jumper (cooling at low outdoor temperature) ..............217
4.4 Jumper and Switch Settings.................................................................218
5. Application of Silicon Grease to a Power Transistor
and a Diode Bridge .............................................................................219
Part 9 Appendix......................................................................... 220
1. Piping Diagrams..................................................................................221
1.1 Indoor Unit............................................................................................221
1.2 Outdoor Unit .........................................................................................222
2. Wiring Diagrams..................................................................................224
2.1 Indoor Unit............................................................................................224
2.2 Outdoor Unit .........................................................................................224

SiBE05-722_B Introduction
vi
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 shock.
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.

Introduction SiBE05-722_B
vii
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.

SiBE05-722_B Introduction
viii
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.

Introduction SiBE05-722_B
ix
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 controller, be sure to disposed
of the old battery to prevent children from swallowing it.
If a child swallows the coin battery, see a doctor immediately.
Warning
Caution
Installation of a leakage breaker is necessary in some cases depending on the
conditions of the installation site, to prevent electrical shocks.
Do not install the equipment in a place where there is a possibility of
combustible gas leaks.
If the combustible gas leaks and remains around the unit, it may cause a fire.
Check to see if the parts and wires are mounted and connected properly, and
if the connections at the soldered or crimped terminals are secure.
Improper installation and connections may cause excessive heat generation,
fire or an electrical shock.
If the installation platform or frame has corroded, replace it.
Corroded installation platform or frame may cause the unit to fall, resulting in
injury.
Check the grounding, and repair it if the equipment is not properly grounded.
Improper grounding may cause an electrical shock.

SiBE05-722_B Introduction
x
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 MΩor higher.
Faulty insulation may cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faulty drainage may cause the water to enter the room and wet the furniture
and floor.
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.

SiBE05-722_B
1List of Functions
Part 1
List of Functions
1. Functions.................................................................................................2

SiBE05-722_B Functions
List of Functions 2
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
★
–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 Power Supply Correspondence — —
INTELLIGENT EYE Operation — — Chargeless 10
m
10
m
Quick Warming Function
(Preheating Operation) —{Either Side Drain (Right or Left) — —
Hot-Start Function — {Power Selection — —
Automatic Defrosting — {Remote
Control
5-Room Centralized Controller (Option) {{
Operation Automatic Operation — {Remote Control Adaptor
(Normal Open Pulse Contact) (Option) {{
Program Dry Operation {{
Fan Only {{
Remote Control Adaptor
(Normal Open Contact) (Option) {{
Lifestyle
Convenience
New POWERFUL Operation
(Non-Inverter) ——
Inverter POWERFUL Operation {{ DIII-NET Compatible (Adaptor) (Option) {{
Priority-Room Setting — — Remote
Controller
Wireless {{
COOL/HEAT Mode Lock — — Wired (Option) — —
HOME LEAVE Operation {{
ECONO Operation — —
Indoor Unit ON/OFF Button {{
Signal Receiving Sign {{
R/C with Back Light — —
Temperature Display — —
Note: {: Holding Functions
— : No Functions
★: Lower limit can be extended to –15°C by cutting
jumper. (facility use only)

Functions SiBE05-722_B
3List of Functions
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
★
–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 Power Supply Correspondence — —
INTELLIGENT EYE Operation — — Chargeless 10
m
10
m
Quick Warming Function
(Preheating Operation) —{Either Side Drain (Right or Left) — —
Hot-Start Function — {Power Selection — —
Automatic Defrosting — {Remote
Control
5-Room Centralized Controller (Option) {{
Operation Automatic Operation — {Remote Control Adaptor
(Normal Open Pulse Contact) (Option) {{
Program Dry Operation {{
Fan Only {{
Remote Control Adaptor
(Normal Open Contact) (Option) {{
Lifestyle
Convenience
New POWERFUL Operation
(Non-Inverter) ——
Inverter POWERFUL Operation {{ DIII-NET Compatible (Adaptor) (Option) {{
Priority-Room Setting — — Remote
Controller
Wireless {{
COOL/HEAT Mode Lock — — Wired (Option) — —
HOME LEAVE Operation {{
ECONO Operation — —
Indoor Unit ON/OFF Button {{
Signal Receiving Sign {{
R/C with Back Light — —
Temperature Display — —
Note: {: Holding Functions
— : No Functions
★: Lower limit can be extended to –15°C by cutting
jumper. (facility use only)

SiBE05-722_B Functions
List of Functions 4
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
★
–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 Power Supply Correspondence — —
INTELLIGENT EYE Operation — — Chargeless 10
m
10
m
Quick Warming Function
(Preheating Operation) —{Either Side Drain (Right or Left) — —
Hot-Start Function — {Power Selection — —
Automatic Defrosting — {Remote
Control
5-Room Centralized Controller (Option) {{
Operation Automatic Operation — {Remote Control Adaptor
(Normal Open Pulse Contact) (Option) {{
Program Dry Operation {{
Fan Only {{
Remote Control Adaptor
(Normal Open Contact) (Option) {{
Lifestyle
Convenience
New POWERFUL Operation
(Non-Inverter) ——
Inverter POWERFUL Operation {{ DIII-NET Compatible (Adaptor) (Option) {{
Priority-Room Setting — — Remote
Controller
Wireless {{
COOL/HEAT Mode Lock — — Wired (Option) — —
HOME LEAVE Operation {{
ECONO Operation — —
Indoor Unit ON/OFF Button {{
Signal Receiving Sign {{
R/C with Back Light — —
Temperature Display — —
Note: {: Holding Functions
— : No Functions
★: Lower limit can be extended to –15°C by cutting
jumper. (facility use only)

Functions SiBE05-722_B
5List of Functions
Category Functions
FLXS25/35BAVMB RXS25/35J2V1B
Category Functions
FLXS25/35BAVMB RXS25/35J2V1B
Basic
Function
Inverter (with Inverter Power Control) {Health &
Clean
Air-Purifying Filter {
Operation Limit for Cooling (°CDB) –10
~46 Photocatalytic Deodorizing Filter {
Operation Limit for Heating (°CWB) –15
~20
Air-Purifying Filter with Photocatalytic
Deodorizing Function —
PAM Control {Titanium Apatite Photocatalytic
Air-Purifying Filter —
Standby Electricity Saving {
Compressor Oval Scroll Compressor — Air Filter (Prefilter) {
Swing Compressor {Wipe-Clean Flat Panel —
Rotary Compressor — Washable Grille —
Reluctance DC Motor {MOLD PROOF Operation —
Comfortable
Airflow
Power-Airflow Flap — 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 Power Supply Correspondence —
INTELLIGENT EYE Operation — Chargeless 10
m
Quick Warming Function
(Preheating Operation) {Either Side Drain (Right or Left) —
Hot-Start Function {Power Selection —
Automatic Defrosting {Remote
Control
5-Room Centralized Controller (Option) {
Operation Automatic Operation {Remote Control Adaptor
(Normal Open Pulse Contact) (Option) {
Program Dry Operation {
Fan Only {
Remote Control Adaptor
(Normal Open Contact) (Option) {
Lifestyle
Convenience
New POWERFUL Operation
(Non-Inverter) —
Inverter POWERFUL Operation {DIII-NET Compatible (Adaptor) (Option) {
Priority-Room Setting — Remote
Controller
Wireless {
COOL/HEAT Mode Lock — Wired (Option) —
HOME LEAVE Operation {
ECONO Operation —
Indoor Unit ON/OFF Button {
Signal Receiving Sign {
R/C with Back Light —
Temperature Display —
Note: {: Holding Functions
— : No Functions

SiBE05-722_B
Specifications 6
Part 2
Specifications
1. Specifications ..........................................................................................7
1.1 Cooling Only.............................................................................................7
1.2 Heat Pump .............................................................................................10

Specifications SiBE05-722_B
7Specifications
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 Unit FLKS25BAVMB FLKS35BAVMB
Outdoor Unit 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
H
m³/min
(cfm)
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 dB(A) 37 / 34 / 31 / 28 38 / 35 / 32 / 29
Sound Power dB(A) 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 Hm³/min
(cfm)
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 dB(A) 46 / 43 47 / 44
Sound Power H dB(A) 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

SiBE05-722_B Specifications
Specifications 8
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model Indoor Unit FLKS25BAVMB FLKS35BAVMB
Outdoor Unit 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
H
m³/min
(cfm)
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 dB(A) 37 / 34 / 31 / 28 38 / 35 / 32 / 29
Sound Power dB(A) 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 Hm³/min
(cfm)
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 dB(A) 46 / 43 48 / 44
Sound Power H dB(A) 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 SiBE05-722_B
9Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model Indoor Unit FLKS25BAVMB FLKS35BAVMB
Outdoor Unit 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
H
m³/min
(cfm)
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 dB(A) 37 / 34 / 31 / 28 38 / 35 / 32 / 29
Sound Power dB(A) 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 Hm³/min
(cfm)
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 dB(A) 46 / 43 48 / 44
Sound Power H dB(A) 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