Daikin Super Multi NX FLKS25BAVMB User manual

Service
Manual
Inverter Pair
Floor / Ceiling Suspended Dual Type
FLK(X)S-BA Series
SiBE05-722EE
[Applicable Models]
OInverter Pair: Cooling Only
OInverter Pair: Heat Pump

SiBE05-722EE
iTable of Contents
Inverter Pair
Floor / Ceiling Suspended
Dual Type
FLK(X)S-BA Series
zCooling Only
Indoor Unit
FLKS25BAVMB
FLKS35BAVMB
Outdoor Unit
RKS25E2V1B RKS25G2V1B
RKS35E2V1B RKS35G2V1B
RKS25G2V1B9
RKS35G2V1B9
zHeat Pump
Indoor Unit
FLXS25BAVMB FLXS35BAVMB9
FLXS35BAVMB
Outdoor Unit
RXS25E2V1B RXS25G2V1B RXS25J2V1B RXS25L2V1B
RXS35E2V1B RXS35G2V1B RXS35J2V1B RXS35L2V1B
RXS25G2V1B9 RXS25K3V1B RXS25L3V1B
RXS35G2V1B9 RXS35K2V1B RXS35L3V1B

SiBE05-722EE
Table of Contents ii
1. Safety Cautions.......................................................................................v
1.1 Warnings and Cautions Regarding Safety of Workers.............................v
1.2 Warnings and Cautions Regarding Safety of Users............................... vii
2. Icons Used ............................................................................................. ix
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
Part 2 Specifications .................................................................... 7
1. Specifications ..........................................................................................8
1.1 Cooling Only.............................................................................................8
1.2 Heat Pump .............................................................................................11
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 18
1. Indoor Unit.............................................................................................19
2. Outdoor Unit..........................................................................................21
2.1 RK(X)S25/35E2V1B ...............................................................................21
2.2 RK(X)S25/35G2V1B...............................................................................23
2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B,
RXS25/35L2V1B ....................................................................................25
2.4 RXS25/35L3V1B ....................................................................................27
Part 4 Functions and Control...................................................... 28
1. Main Functions......................................................................................29
1.1 Temperature Control ..............................................................................29
1.2 Frequency Principle................................................................................29
1.3 Airflow Direction Control.........................................................................31
1.4 Fan Speed Control for Indoor Unit .........................................................31
1.5 Program Dry Operation ..........................................................................32
1.6 Automatic Operation...............................................................................33
1.7 Thermostat Control.................................................................................34
1.8 NIGHT SET Mode ..................................................................................35
1.9 HOME LEAVE Operation .......................................................................36
1.10 Inverter POWERFUL Operation .............................................................37
1.11 Clock Setting ..........................................................................................38
1.12 Other Functions......................................................................................39
2. Thermistor Functions ............................................................................40
3. Control Specification .............................................................................41
3.1 Mode Hierarchy ......................................................................................41
3.2 Frequency Control..................................................................................42
3.3 Controls at Mode Changing / Start-up....................................................44
3.4 Discharge Pipe Temperature Control.....................................................46
3.5 Input Current Control..............................................................................47
3.6 Freeze-up Protection Control .................................................................48
3.7 Heating Peak-cut Control .......................................................................48
3.8 Outdoor Fan Control...............................................................................49
3.9 Liquid Compression Protection Function................................................49

SiBE05-722EE
iii Table of Contents
3.10 Defrost Control .......................................................................................50
3.11 Electronic Expansion Valve Control .......................................................51
3.12 Malfunctions ...........................................................................................54
Part 5 Remote Controller ............................................................ 55
1. Remote Controller .................................................................................56
Part 6 Service Diagnosis............................................................. 58
1. General Problem Symptoms and Check Items .....................................59
2. Troubleshooting with LED .....................................................................60
2.1 Indoor Unit..............................................................................................60
2.2 Outdoor Unit ...........................................................................................60
3. Service Diagnosis .................................................................................61
4. Troubleshooting ....................................................................................64
4.1 Error Codes and Descriptions ................................................................64
4.2 Indoor Unit PCB Abnormality .................................................................65
4.3 Freeze-up Protection Control / Heating Peak-cut Control ......................66
4.4 Fan Motor (AC Motor) or Related Abnormality.......................................67
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................69
4.6 Refrigerant Shortage ..............................................................................70
4.7 Low-voltage Detection or Over-voltage Detection..................................72
4.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......74
4.9 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ...............76
4.10 Outdoor Unit PCB Abnormality...............................................................77
4.11 OL Activation (Compressor Overload) ...................................................79
4.12 Compressor Lock ...................................................................................81
4.13 DC Fan Lock ..........................................................................................82
4.14 Input Overcurrent Detection ...................................................................83
4.15 Four Way Valve Abnormality..................................................................84
4.16 Discharge Pipe Temperature Control.....................................................86
4.17 High Pressure Control in Cooling ...........................................................87
4.18 Compressor System Sensor Abnormality ..............................................88
4.19 Position Sensor Abnormality ..................................................................89
4.20 DC Voltage / Current Sensor Abnormality..............................................91
4.21 Thermistor or Related Abnormality (Outdoor Unit).................................92
4.22 Electrical Box Temperature Rise............................................................94
4.23 Radiation Fin Temperature Rise ............................................................97
4.24 Output Overcurrent Detection ..............................................................100
5. Check ..................................................................................................102
5.1 Thermistor Resistance Check ..............................................................102
5.2 Hall IC Check .......................................................................................103
5.3 Power Supply Waveforms Check.........................................................103
5.4 Electronic Expansion Valve Check.......................................................104
5.5 Four Way Valve Performance Check ...................................................105
5.6 Inverter Unit Refrigerant System Check...............................................105
5.7 Inverter Analyzer Check .......................................................................106
5.8 Rotation Pulse Check on the Outdoor Unit PCB ..................................108
5.9 Installation Condition Check.................................................................109
5.10 Discharge Pressure Check...................................................................109
5.11 Outdoor Fan System Check .................................................................110

SiBE05-722EE
Table of Contents iv
5.12 Main Circuit Short Check......................................................................110
5.13 Power Module Check ...........................................................................112
Part 7 Trial Operation and Field Settings................................. 115
1. Tips for Servicing ................................................................................116
1.1 Pump Down Operation .........................................................................116
1.2 Forced Cooling Operation ....................................................................116
2. Trial Operation ....................................................................................118
3. Field Settings ......................................................................................119
3.1 When 2 Units are Installed in 1 Room..................................................119
3.2 Facility Setting Jumper (cooling at low outdoor temperature) ..............120
3.3 Jumper and Switch Settings.................................................................121
4. Silicone Grease on Power Transistor / Diode Bridge..........................122
Part 8 Appendix......................................................................... 123
1. Piping Diagrams..................................................................................124
1.1 Indoor Unit............................................................................................124
1.2 Outdoor Unit .........................................................................................125
2. Wiring Diagrams..................................................................................128
2.1 Indoor Unit............................................................................................128
2.2 Outdoor Unit .........................................................................................129

Safety Cautions SiBE05-722EE
v
1. Safety Cautions
Be sure to read the following safety cautions before conducting repair work.
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.
Caution Items The caution items are classified into Warning and Caution. The Warning items are
especially important since death or serious injury can result 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.
Pictograms This symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown in the illustration or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown in the illustration or near the symbol.
1.1 Warnings and Cautions Regarding Safety of Workers
Warning
Do not store equipment in a room with fire sources (e.g., naked flames,
gas appliances, electric heaters).
Be sure to disconnect the power cable from the socket before
disassembling equipment for repair.
Working on 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
inspect the circuits, do not touch any electrically charged sections of the
equipment.
If refrigerant gas is discharged during repair work, do not touch the
discharged refrigerant gas.
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 gas remaining inside the compressor, the refrigerant gas or
refrigerating machine oil discharges when the pipe is disconnected, and it may
cause injury.
If refrigerant gas leaks during repair work, ventilate the area.
Refrigerant gas may generate toxic gases when it contacts flames.
Be sure to discharge the capacitor completely before conducting repair
work.
The step-up capacitor supplies high-voltage electricity to the electrical
components of the outdoor unit.
A charged capacitor may cause an electrical shock.

SiBE05-722EE Safety Cautions
vi
Do not turn the air conditioner on or off by plugging in or unplugging the
power cable.
Plugging in or unplugging the power cable to operate the equipment may cause
an electrical shock or fire.
Be sure to wear a safety helmet, gloves, and a safety belt when working
in a high place (more than 2 m).
Insufficient safety measures may cause a fall.
In case of R-32 / R-410A refrigerant models, be sure to use pipes, flare
nuts and tools intended for the exclusive use with the R-32 / R-410A
refrigerant.
The use of materials for R-22 refrigerant models may cause a serious accident,
such as a damage of refrigerant cycle or equipment failure.
Do not mix air or gas other than the specified refrigerant (R-32 / R-410A /
R-22) in the refrigerant system.
If air enters the refrigerant system, an excessively high pressure results,
causing equipment damage and injury.
Warning
Caution
Do not repair electrical components with wet hands.
Working on the equipment with wet hands may cause an electrical shock.
Do not clean the air conditioner with water.
Washing the unit with water may cause an electrical shock.
Be sure to provide an earth / 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 may 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.

Safety Cautions SiBE05-722EE
vii
1.2 Warnings and Cautions Regarding Safety of Users
Conduct welding work in a well-ventilated place.
Using a welder in an enclosed room may cause oxygen deficiency.
Caution
Warning
Do not store the equipment in a room with fire sources (e.g., naked
flames, gas appliances, electric heaters).
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 are scratched or have 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 cables may cause an electrical shock or fire.
Placing heavy items on the power cable, or heating or pulling the power cable
may damage it.

SiBE05-722EE Safety Cautions
viii
Do not mix air or gas other than the specified refrigerant (R-32 / R-410A /
R-22) in the refrigerant system.
If air enters the refrigerant 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 the refrigerant, make
sure that there is no leak.
If the leaking point cannot be located and the repair work must be stopped, be
sure to pump-down, and close the service valve, to prevent refrigerant gas from
leaking into the room. Refrigerant gas itself is harmless, but it may generate
toxic gases when it contacts flames, such as those from fan type 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 or the installation work
is not conducted securely, the equipment may fall and cause injury.
Check to make sure that the power cable plug is not dirty or loose, then
insert the plug into a power outlet securely.
If the plug is dusty or has a loose connection, it may cause an electrical shock
or fire.
When replacing the coin battery in the remote controller, be sure to
dispose 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 combustible gas leaks and remains around the unit, it may cause a fire.
Check to see if parts and wires are mounted and connected properly, and
if 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.
A corroded installation platform or frame may cause the unit to fall, resulting in
injury.

Icons Used SiBE05-722EE
ix
2. Icons Used
The following icons are used to attract the attention of the reader to specific information.
Check the earth / grounding, and repair it if the equipment is not properly
earthed / grounded.
Improper earth / grounding may cause an electrical shock.
Be sure to measure 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 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.
Caution
Icon Type of
Information
Description
Warning
Warning A Warning is used when there is danger of personal injury.
Caution
Caution A Caution is used when there is danger that the reader, through
incorrect manipulation, may damage equipment, lose data, get
an unexpected result or have to restart (part of) a procedure.
Note:
Note A Note provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
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.

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

Functions SiBE05-722EE
2List 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
Functions
Inverter (with inverter power control) zz Health &
Cleanliness
Air-purifying filter zz
Operation limit for cooling (°CDB)
–10
~ 46

–10
~ 46 Photocatalytic deodorizing filter zz
Operation limit for heating (°CWB) — –15
~ 18
Air-purifying filter with photocatalytic
deodorizing function (option) zz
PAM control zz Titanium apatite photocatalytic
air-purifying filter ——
Standby electricity saving — —
Compressor Oval scroll compressor — — Air filter (prefilter) zz
Swing compressor zz Wipe-clean flat panel — —
Rotary compressor — — Washable grille — —
Reluctance DC motor zz 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 zz
Power-airflow diffuser — — NIGHT SET mode zz
Wide-angle louvers — — Worry Free
(Reliability &
Durability)
Auto-restart (after power failure) zz
Auto-swing (up and down) zz Self-diagnosis (digital, LED) display zz
Auto-swing (right and left) — — Wiring error check function — —
3-D airflow — — Anti-corrosion treatment of outdoor heat
exchanger zz
Comfort
Control
Auto fan speed zz
Indoor unit quiet operation zz Flexibility Multi-split/split type compatible indoor
unit zz
NIGHT QUIET mode (automatic) — —
OUTDOOR UNIT QUIET operation
(manual) zz Flexible power supply correspondence — —
INTELLIGENT EYE operation — — Chargeless 10
m
10
m
Quick warming function
(preheating control) —zEither side drain (right or left) — —
Hot-start function — zPower selection — —
Automatic defrosting — zRemote
Control
5-room centralized controller (option) zz
Operation Automatic operation — zRemote control adaptor
(normal open pulse contact) (option) zz
Program dry operation zz
Fan only zz
Remote control adaptor
(normal open contact) (option) zz
Lifestyle
Convenience
New POWERFUL operation
(non-inverter) ——
Inverter POWERFUL operation zz DIII-NET compatible (adaptor) (option) zz
Priority-room setting — — Remote
Controller
Wireless zz
COOL / HEAT mode lock — — Wired (option) — —
HOME LEAVE operation zz
ECONO operation — —
Indoor unit ON/OFF button zz
Signal receiving sign zz
R/C with back light — —
Temperature display — —
Note: z: Available
— : Not available
: Lower limit can be extended by cutting jumper.
(Facility use only)
Refer to page 120 for details.

SiBE05-722EE 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
Functions
Inverter (with inverter power control) zz Health &
Cleanliness
Air-purifying filter zz
Operation limit for cooling (°CDB)
–10
~ 46

–10
~ 46

Photocatalytic deodorizing filter zz
Operation limit for heating (°CWB) — –15
~ 18
Air-purifying filter with photocatalytic
deodorizing function (option) zz
PAM control zz Titanium apatite photocatalytic
air-purifying filter ——
Standby electricity saving — —
Compressor Oval scroll compressor — — Air filter (prefilter) zz
Swing compressor zz Wipe-clean flat panel — —
Rotary compressor — — Washable grille — —
Reluctance DC motor zz 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 zz
Power-airflow diffuser — — NIGHT SET mode zz
Wide-angle louvers — — Worry Free
(Reliability &
Durability)
Auto-restart (after power failure) zz
Auto-swing (up and down) zz Self-diagnosis (digital, LED) display zz
Auto-swing (right and left) — — Wiring error check function — —
3-D airflow — — Anti-corrosion treatment of outdoor heat
exchanger zz
Comfort
Control
Auto fan speed zz
Indoor unit quiet operation zz Flexibility Multi-split/split type compatible indoor
unit zz
NIGHT QUIET mode (automatic) — —
OUTDOOR UNIT QUIET operation
(manual) zz Flexible power supply correspondence — —
INTELLIGENT EYE operation — — Chargeless 10
m
10
m
Quick warming function
(preheating control) —zEither side drain (right or left) — —
Hot-start function — zPower selection — —
Automatic defrosting — zRemote
Control
5-room centralized controller (option) zz
Operation Automatic operation — zRemote control adaptor
(normal open pulse contact) (option) zz
Program dry operation zz
Fan only zz
Remote control adaptor
(normal open contact) (option) zz
Lifestyle
Convenience
New POWERFUL operation
(non-inverter) ——
Inverter POWERFUL operation zz DIII-NET compatible (adaptor) (option) zz
Priority-room setting — — Remote
Controller
Wireless zz
COOL / HEAT mode lock — — Wired (option) — —
HOME LEAVE operation zz
ECONO operation — —
Indoor unit ON/OFF button zz
Signal receiving sign zz
R/C with back light — —
Temperature display — —
Note: z: Available
— : Not available
: Lower limit can be extended by cutting jumper.
(Facility use only)
Refer to page 120 for details.

Functions SiBE05-722EE
4List of Functions
Category Functions
FLKS25/35BAVMB RKS25/35G2V1B9 FLXS25/35BAVMB RXS25/35G2V1B9
Category Functions
FLKS25/35BAVMB RKS25/35G2V1B9 FLXS25/35BAVMB RXS25/35G2V1B9
Basic
Functions
Inverter (with inverter power control) zz Health &
Cleanliness
Air-purifying filter zz
Operation limit for cooling (°CDB)
–10
~ 46

–10
~ 46

Photocatalytic deodorizing filter zz
Operation limit for heating (°CWB) — –15
~ 18
Air-purifying filter with photocatalytic
deodorizing function (option) zz
PAM control zz Titanium apatite photocatalytic
air-purifying filter ——
Standby electricity saving — —
Compressor Oval scroll compressor — — Air filter (prefilter) zz
Swing compressor zz Wipe-clean flat panel — —
Rotary compressor — — Washable grille — —
Reluctance DC motor zz 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 zz
Power-airflow diffuser — — NIGHT SET mode zz
Wide-angle louvers — — Worry Free
(Reliability &
Durability)
Auto-restart (after power failure) zz
Auto-swing (up and down) zz Self-diagnosis (digital, LED) display zz
Auto-swing (right and left) — — Wiring error check function — —
3-D airflow — — Anti-corrosion treatment of outdoor heat
exchanger zz
Comfort
Control
Auto fan speed zz
Indoor unit quiet operation zz Flexibility Multi-split/split type compatible indoor
unit zz
NIGHT QUIET mode (automatic) — —
OUTDOOR UNIT QUIET operation
(manual) zz Flexible power supply correspondence — —
INTELLIGENT EYE operation — — Chargeless 10
m
10
m
Quick warming function
(preheating control) —zEither side drain (right or left) — —
Hot-start function — zPower selection — —
Automatic defrosting — zRemote
Control
5-room centralized controller (option) zz
Operation Automatic operation — zRemote control adaptor
(normal open pulse contact) (option) zz
Program dry operation zz
Fan only zz
Remote control adaptor
(normal open contact) (option) zz
Lifestyle
Convenience
New POWERFUL operation
(non-inverter) ——
Inverter POWERFUL operation zz DIII-NET compatible (adaptor) (option) zz
Priority-room setting — — Remote
Controller
Wireless zz
COOL / HEAT mode lock — — Wired (option) — —
HOME LEAVE operation zz
ECONO operation — —
Indoor unit ON/OFF button zz
Signal receiving sign zz
R/C with back light — —
Temperature display — —
Note: z: Available
— : Not available
: Lower limit can be extended by cutting jumper.
(Facility use only)
Refer to page 120 for details.

SiBE05-722EE Functions
List of Functions 5
Category Functions
FLXS25/35BAVMB RXS25/35J2V1B FLXS25/35BAVMB RXS25K3V1B RXS35K2V1B
Category Functions
FLXS25/35BAVMB RXS25/35J2V1B FLXS25/35BAVMB RXS25K3V1B RXS35K2V1B
Basic
Functions
Inverter (with inverter power control) zz Health &
Cleanliness
Air-purifying filter zz
Operation limit for cooling (°CDB)
–10
~ 46

–10
~ 46
Photocatalytic deodorizing filter zz
Operation limit for heating (°CWB) –15
~ 18
–15
~ 18
Air-purifying filter with photocatalytic
deodorizing function (option) zz
PAM control zz
Titanium apatite photocatalytic
air-purifying filter ——
Standby electricity saving — —
Compressor Oval scroll compressor — — Air filter (prefilter) zz
Swing compressor zz Wipe-clean flat panel — —
Rotary compressor — — Washable grille — —
Reluctance DC motor zz 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 zz
Power-airflow diffuser — — NIGHT SET mode zz
Wide-angle louvers — — Worry Free
(Reliability &
Durability)
Auto-restart (after power failure) zz
Auto-swing (up and down) zz Self-diagnosis (digital, LED) display zz
Auto-swing (right and left) — — Wiring error check function — —
3-D airflow — — Anti-corrosion treatment of outdoor
heat exchanger zz
Comfort
Control
Auto fan speed zz
Indoor unit quiet operation zz Flexibility Multi-split/split type compatible
indoor unit zz
NIGHT QUIET mode (automatic) — —
OUTDOOR UNIT QUIET operation
(manual) zz Flexible power supply
correspondence ——
INTELLIGENT EYE operation — — Chargeless 10 m 10 m
Quick warming function
(preheating control) zz Either side drain (right or left) — —
Hot-start function zz Power selection — —
Automatic defrosting zz
Remote
Control
5-room centralized controller (option) zz
Operation Automatic operation zz Remote control adaptor
(normal open pulse contact) (option) zz
Program dry operation zz
Fan only zz
Remote control adaptor
(normal open contact) (option) zz
Lifestyle
Convenience
New POWERFUL operation
(non-inverter) ——
Inverter POWERFUL operation zz DIII-NET compatible (adaptor)
(option) zz
Priority-room setting — — Remote
Controller
Wireless zz
COOL / HEAT mode lock — — Wired (option) — —
HOME LEAVE operation zz
ECONO operation — —
Indoor unit ON/OFF button zz
Signal receiving sign zz
R/C with back light — —
Temperature display — —
Note: z: Available
— : Not available
: Lower limit can be extended by cutting jumper.
(Facility use only)
Refer to page 120 for details.

Functions SiBE05-722EE
6List of Functions
Category Functions
FLXS25BAVMB FLXS35BAVMB9 RXS25/35L2V1B FLXS25BAVMB FLXS35BAVMB9 RXS25/35L3V1B
Category Functions
FLXS25BAVMB FLXS35BAVMB9 RXS25/35L2V1B FLXS25BAVMB FLXS35BAVMB9 RXS25/35L3V1B
Basic
Functions
Inverter (with inverter power control) zz Health &
Cleanliness
Air-purifying filter zz
Operation limit for cooling (°CDB)
–10
~ 46

–10
~ 46
Photocatalytic deodorizing filter zz
Operation limit for heating (°CWB) –15
~ 18
–15
~ 18
Air-purifying filter with photocatalytic
deodorizing function (option) zz
PAM control zz
Titanium apatite photocatalytic
air-purifying filter ——
Standby electricity saving — —
Compressor Oval scroll compressor — — Air filter (prefilter) zz
Swing compressor zz Wipe-clean flat panel — —
Rotary compressor — — Washable grille — —
Reluctance DC motor zz 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 zz
Power-airflow diffuser — — NIGHT SET mode zz
Wide-angle louvers — — Worry Free
(Reliability &
Durability)
Auto-restart (after power failure) zz
Auto-swing (up and down) zz Self-diagnosis (digital, LED) display zz
Auto-swing (right and left) — — Wiring error check function — —
3-D airflow — — Anti-corrosion treatment of outdoor
heat exchanger zz
Comfort
Control
Auto fan speed zz
Indoor unit quiet operation zz Flexibility Multi-split/split type compatible
indoor unit zz
NIGHT QUIET mode (automatic) — —
OUTDOOR UNIT QUIET operation
(manual) zz Flexible power supply
correspondence ——
INTELLIGENT EYE operation — — Chargeless 10 m 10 m
Quick warming function
(preheating control) zz Either side drain (right or left) — —
Hot-start function zz Power selection — —
Automatic defrosting zz
Remote
Control
5-room centralized controller (option) zz
Operation Automatic operation zz Remote control adaptor
(normal open pulse contact) (option) zz
Program dry operation zz
Fan only zz
Remote control adaptor
(normal open contact) (option) zz
Lifestyle
Convenience
New POWERFUL operation
(non-inverter) ——
Inverter POWERFUL operation zz DIII-NET compatible (adaptor)
(option) zz
Priority-room setting — — Remote
Controller
Wireless zz
COOL / HEAT mode lock — — Wired (option) — —
HOME LEAVE operation zz
ECONO operation — —
Indoor unit ON/OFF button zz
Signal receiving sign zz
R/C with back light — —
Temperature display — —
Note: z: Available
— : Not available
: Lower limit can be extended by cutting jumper.
(Facility use only)
Refer to page 120 for details.

SiBE05-722EE
Specifications 7
Part 2
Specifications
1. Specifications ..........................................................................................8
1.1 Cooling Only.............................................................................................8
1.2 Heat Pump .............................................................................................11

Specifications SiBE05-722EE
8Specifications
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 (Mass) kg 16 16
Gross Weight (Gross Mass) kg 22 22
Sound
Pressure
Level H / M / L / SL dB(A) 37 / 34 / 31 / 28 38 / 35 / 32 / 29
Sound Power Level dB 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 (Mass) kg 32 32
Gross Weight (Gross Mass) kg 38 38
Sound
Pressure
Level H / L dB(A) 46 / 43 47 / 44
Sound Power
Level HdB 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

SiBE05-722EE Specifications
Specifications 9
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 (Mass) kg 16 16
Gross Weight (Gross Mass) kg 22 22
Sound
Pressure
Level H / M / L / SL dB(A) 37 / 34 / 31 / 28 38 / 35 / 32 / 29
Sound Power Level dB 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 (Mass) kg 34 34
Gross Weight (Gross Mass) kg 40 40
Sound
Pressure
Level H / SL dB(A) 46 / 43 48 / 44
Sound Power
Level HdB 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 SiBE05-722EE
10 Specifications
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 (Mass) kg 16 16
Gross Weight (Gross Mass) kg 22 22
Sound
Pressure
Level H / M / L / SL dB(A) 37 / 34 / 31 / 28 38 / 35 / 32 / 29
Sound Power Level dB 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) 36.0 (1,271)
SL 30.1 (1,063) 30.1 (1,063)
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 612 × 906 × 364 612 × 906 × 364
Weight (Mass) kg 34 34
Gross Weight (Gross Mass) kg 38 38
Sound
Pressure
Level H / SL dB(A) 46 / 43 48 / 44
Sound Power
Level HdB 61 63
Drawing No. 3D065726A 3D065725A
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