Daikin CTXM15N2V1B, FTXM20N2V1B, FTXM25N2V1B, FTXM35N2V1B, FTXM42N2V1B User reference guide

User reference guide

Daikin room air conditioner

CTXM15N2V1B

FTXM20N2V1B
FTXM25N2V1B
FTXM35N2V1B
FTXM42N2V1B
FTXM50N2V1B
FTXM60N2V1B
FTXM71N2V1B

Table of contents

Table of contents

1 General safety precautions 4

1.1 About the documentation .............................................................................................................................................. 4

1.1.1 Meaning of warnings and symbols ................................................................................................................ 4

1.2 For the user..................................................................................................................................................................... 5

2 About the documentation 7

2.1 About this document ...................................................................................................................................................... 7

2.2 User reference guide at a glance.................................................................................................................................... 7

3 About the system 9

3.1 Indoor unit ...................................................................................................................................................................... 9

3.1.1 Indoor unit display.......................................................................................................................................... 10

3.2 About the user interface................................................................................................................................................. 11

3.2.1 Components: User interface .......................................................................................................................... 11

3.2.2 Status: User interface LCD.............................................................................................................................. 12

3.2.3 To operate the user interface ........................................................................................................................ 13

4 Before operation 14

4.1 Overview: Before operation ........................................................................................................................................... 14

4.2 To insert the batteries .................................................................................................................................................... 14

4.3 To fix the user interface to the wall................................................................................................................................ 14

4.4 About the clock ............................................................................................................................................................... 15

4.4.1 To set the clock ............................................................................................................................................... 15

4.5 Brightness of the indoor unit display ............................................................................................................................. 16

4.5.1 To set the brightness of the indoor unit display ............................................................................................ 16

4.6 To turn on the power supply .......................................................................................................................................... 16

5 Operation 17

5.1 Operation range.............................................................................................................................................................. 17

5.2 When to use which feature ............................................................................................................................................ 17

5.3 Operation mode and temperature setpoint .................................................................................................................. 18

5.3.1 To start/stop operation mode and to set the temperature .......................................................................... 19

5.4 Airflow rate ..................................................................................................................................................................... 20

5.4.1 To adjust the airflow rate ............................................................................................................................... 20

5.5 Airflow direction ............................................................................................................................................................. 20

5.5.1 To adjust vertical airflow direction ................................................................................................................ 21

5.5.2 To adjust horizontal airflow direction ............................................................................................................ 21

5.5.3 To use 3-D airflow direction ........................................................................................................................... 21

5.6 Comfort airflow and Intelligent eye operation .............................................................................................................. 22

5.6.1 Comfort airflow operation ............................................................................................................................. 22

5.6.2 Intelligent eye operation ................................................................................................................................ 22

5.6.3 To start/stop Comfort and Intelligent eye operation .................................................................................... 23

5.7 Powerful operation ......................................................................................................................................................... 23

5.7.1 To start/stop Powerful operation .................................................................................................................. 23

5.8 Econo and Outdoor unit quiet operation....................................................................................................................... 24

5.8.1 Econo operation ............................................................................................................................................. 24

5.8.2 Outdoor unit quiet operation......................................................................................................................... 24

5.8.3 To start/stop Econo and Outdoor unit quiet operation ................................................................................ 25

5.9 Flash Streamer (air cleaning) operation ......................................................................................................................... 25

5.9.1 To start/stop Flash Streamer (air cleaning) operation .................................................................................. 25

5.10 OFF/ON timer operation................................................................................................................................................. 25

5.10.1 To start/stop OFF timer operation................................................................................................................. 26

5.10.2 To start/stop ON timer operation.................................................................................................................. 26

5.10.3 To combine OFF timer and ON timer............................................................................................................. 27

5.11 Weekly timer operation .................................................................................................................................................. 27

5.11.1 To set Weekly timer operation ...................................................................................................................... 28

5.11.2 To copy reservations ...................................................................................................................................... 29

5.11.3 To confirm reservations ................................................................................................................................. 30

5.11.4 To deactivate and reactivate Weekly timer operation.................................................................................. 30

5.11.5 To delete reservations.................................................................................................................................... 30

5.12 Wireless LAN connection ................................................................................................................................................ 31

5.12.1 Precautions when using the wireless adapter............................................................................................... 31

5.12.2 To install the Daikin Online Controller application........................................................................................ 31

5.12.3 Wireless adapter components ....................................................................................................................... 32

5.13 About Multi system......................................................................................................................................................... 32

5.13.1 Priority room setting ...................................................................................................................................... 32

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Table of contents

5.13.2 Night quiet mode............................................................................................................................................ 33

5.13.3 Cooling/heating mode lock ............................................................................................................................ 34

6 Energy saving and optimum operation 35

7 Maintenance and service 37

7.1 Overview: Maintenance and service .............................................................................................................................. 37

7.2 To clean the indoor unit and user interface................................................................................................................... 38

7.3 To clean the front panel ................................................................................................................................................. 38

7.4 To remove the front panel.............................................................................................................................................. 39

7.5 About the air filters......................................................................................................................................................... 39

7.6 To clean the air filters ..................................................................................................................................................... 39

7.7 To clean the titanium apatite deodorizing filter ............................................................................................................ 40

7.8 To replace the titanium apatite deodorizing filter......................................................................................................... 41

7.9 To re-install the front panel............................................................................................................................................ 42

7.10 To take following items into account before a long idle period .................................................................................... 42

8 Troubleshooting 43

8.1 Symptoms that are NOT system malfunctions............................................................................................................... 45

8.1.1 Symptom: A sound like water flowing is heard ............................................................................................. 45

8.1.2 Symptom: A blowing sound is heard.............................................................................................................. 45

8.1.3 Symptom: A ticking sound is heard................................................................................................................ 45

8.1.4 Symptom: A whistling sound is heard ............................................................................................................ 45

8.1.5 Symptom: A clicking sound during operation or idle time is heard .............................................................. 45

8.1.6 Symptom: A clapping sound is heard............................................................................................................. 45

8.1.7 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 46

8.1.8 Symptom: The units can give off odours ....................................................................................................... 46

8.1.9 Symptom: The outdoor fan rotates while the air conditioner is not in operation ....................................... 46

8.2 Solving problems based on error codes ......................................................................................................................... 46

8.3 Troubleshooting for wireless connection adapter......................................................................................................... 47

8.4 Solving problems based on the LED on the outdoor unit .............................................................................................. 48

9 Disposal 50

10 Glossary 51

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

User reference guide

3

1 | General safety precautions

1 General safety precautions

1.1 About the documentation

▪ The original documentation is written in English. All other languages are

translations.

▪ The precautions described in this document cover very important topics, follow

them carefully.

▪ The installation of the system, and all activities described in the installation

manual and in the installer reference guide MUST be performed by an authorised
installer.

1.1.1 Meaning of warnings and symbols

DANGER

Indicates a situation that results in death or serious injury.

DANGER: RISK OF ELECTROCUTION

Indicates a situation that could result in electrocution.

DANGER: RISK OF BURNING

Indicates a situation that could result in burning because of extreme hot or cold
temperatures.

DANGER: RISK OF EXPLOSION

Indicates a situation that could result in explosion.

WARNING

Indicates a situation that could result in death or serious injury.

WARNING: FLAMMABLE MATERIAL

CAUTION

Indicates a situation that could result in minor or moderate injury.

User reference guide

4

NOTICE

Indicates a situation that could result in equipment or property damage.

INFORMATION

Indicates useful tips or additional information.

Symbols used on the unit:

CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

Symbol Explanation

Before installation, read the installation and operation
manual, and the wiring instruction sheet.

Before performing maintenance and service tasks, read the
service manual.

For more information, see the installer and user reference
guide.

The unit contains rotating parts. Be careful when servicing or
inspecting the unit.

Symbols used in the documentation:

Symbol Explanation

Indicates a figure title or a reference to it.

Example: " 1–3 Figure title" means "Figure 3 in chapter 1".

Indicates a table title or a reference to it.

Example: " 1–3 Table title" means "Table 3 in chapter 1".

1 | General safety precautions

1.2 For the user

WARNING

If you are NOT sure how to operate the unit, contact your
installer.

WARNING

This appliance is not intended for use by persons, including
children, with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning
use of the appliance by a person responsible for their
safety.

Children should be supervised to ensure that they do not
play with the appliance.

Cleaning and user maintenance must not be carried out by
children without supervision.

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

WARNING

To prevent electrical shocks or fire:

▪ Do NOT rinse the unit.

▪ Do NOT operate the unit with wet hands.

▪ Do NOT place any objects containing water on the unit.

User reference guide

5

1 | General safety precautions

▪ Units are marked with the following symbol:

This means that electrical and electronic products may NOT be mixed with
unsorted household waste. Do NOT try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and of other parts
must be done by an authorized installer and must comply with applicable
legislation.
Units must be treated at a specialized treatment facility for reuse, recycling and
recovery. By ensuring this product is disposed of correctly, you will help to
prevent potential negative consequences for the environment and human
health. For more information, contact your installer or local authority.

▪ Batteries are marked with the following symbol:

CAUTION

▪ Do NOT place any objects or equipment on top of the

unit.

▪ Do NOT sit, climb or stand on the unit.

This means that the batteries may NOT be mixed with unsorted household
waste. If a chemical symbol is printed beneath the symbol, this chemical symbol
means that the battery contains a heavy metal above a certain concentration.
Possible chemical symbols are: Pb: lead (>0.004%).
Waste batteries must be treated at a specialized treatment facility for reuse. By
ensuring waste batteries are disposed of correctly, you will help to prevent
potential negative consequences for the environment and human health.

User reference guide

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CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

2 About the documentation

2.1 About this document

Thank you for purchasing this product. Please:

▪ Keep the documentation for future reference.

Target audience

Endusers

INFORMATION

This appliance is intended to be used by expert or trained users in shops, in light
industry, and on farms, or for commercial and household use by lay persons.

Documentation set

This document is part of a documentation set. The complete set consists of:

▪ General safety precautions:

2 | About the documentation

- Safety instructions that you must read before operating your system

- Format: Paper (in the box of the indoor unit)

▪ Operation manual:

- Quick guide for basic usage

- Format: Paper (in the box of the indoor unit)

▪ User reference guide:

- Detailed step-by-step instructions and background information for basic and

advanced usage

- Format: Digital files on http://www.daikineurope.com/support-and-manuals/

product-information/

Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your installer.

The original documentation is written in English. All other languages are
translations.

2.2 User reference guide at a glance

Chapter Description

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

General safety precautions Safety instructions that you MUST read before

operation

About the documentation What documentation exists for the user

About the system ▪ Operation range

▪ Description of indoor unit and user

interface

Before operation What to do before starting operation

Operation How and when to use certain features

User reference guide

7

2 | About the documentation

Chapter Description

Energy saving and optimum

How to save energy

operation

Maintenance and service How to maintain and service the unit

Troubleshooting What to do in case of problems

Disposal How to dispose of the system

Glossary Definition of terms

User reference guide

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CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

3 About the system

WARNING: FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

NOTICE

Do NOT use the system for other purposes. In order to avoid any quality
deterioration, do NOT use the unit for cooling precision instruments, food, plants,
animals, or works of art.

3.1 Indoor unit

CAUTION

Do NOT insert fingers, rods or other objects into the air inlet or outlet. When the fan
is rotating at high speed, it will cause injury.

INFORMATION

The sound pressure level is less than 70dBA.

3 | About the system

WARNING

▪ Do not modify, disassemble, remove, reinstall or repair the unit yourself as

incorrect dismantling or installation may cause an electric shock or fire. Contact
your dealer.

▪ In case of accidental refrigerant leaks, make sure there are no naked flames. The

refrigerant itself is entirely safe, non-toxic and mildly flammable, but it will
generate toxic gas when it accidentally leaks into a room where combustible air
from fan heaters, gas cookers, etc. is present. Always have qualified service
personnel confirm that the point of leakage has been repaired or corrected
before resuming operation.

INFORMATION

The following figures are just examples and may NOT completely match your system
layout.

CTXM15+FTXM20~71N2V1B
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4P518786-3F – 2020.05

User reference guide

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3 | About the system

a

e

d

l

m

g

k

h

f

b

c

i

j

a

b
c
d

e

a Air inlet
b Air outlet

c Front panel
d Service cover
e Place for wireless adapter

f Indoor unit display
g Intelligent eye sensor
h Room temperature sensor

i Only for class 15~42: Titanium apatite deodorizing filter (without frame)

j Only for class 50~71: Titanium apatite deodorizing filter (with frame)
k Air filter

l Flaps (horizontal blades)

m Louvers (vertical blades)

3.1.1 Indoor unit display

a Signal receiver for user interface

b Operation lamp

c Timer lamp
d Intelligent eye lamp
e ON/OFF button

ON/OFF button

If the user interface is missing, you can use the ON/OFF button on the indoor unit
to start/stop operation. When operation is started using this button, the following
settings are used:

▪ Operation mode = Automatic

▪ Temperature setting = 25°C

▪ Airflow rate = Automatic

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CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

3.2 About the user interface

d

a

g

m

h

c

b

n

l

f

e

i

j

k

p

o

▪ Direct sunlight. Do NOT expose the user interface to direct sunlight.

▪ Dust. Dust on the signal transmitter or receiver will reduce sensitivity. Wipe off

dust with a soft cloth.

▪ Fluorescent lights. Signal communication might be disabled if fluorescent lamps

are in the room. In that case, contact your installer.

▪ Other appliances. If the user interface signals operate other appliances, move

the other appliances, or contact your installer.

▪ Curtains. Make sure that the signal between the unit and the user interface is

NOT blocked by curtains or other objects.

NOTICE

▪ Do NOT drop the user interface.
▪ Do NOT let the user interface get wet.

3.2.1 Components: User interface

3 | About the system

a Signal transmitter
b LCD display
c Temperature adjustment button
d ON/OFF button

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

e Vertical swing button

f Horizontal swing button
g Comfort airflow and Intelligent eye operation button
h Select button

i Clock and indoor unit display brightness button
j OFF/ON timer operation buttons

k Weekly timer operation buttons

l Flash Streamer (air cleaning) operation button

m Econo and Outdoor unit quiet operation button

n Mode button
o Powerful button
p Fan button

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11

3 | About the system

3.2.2 Status: User interface LCD

Icon Description

Operation is active

Operation mode = Automatic

Operation mode = Drying

Operation mode = Heating

Operation mode = Cooling

Operation mode = Fan only

Powerful operation is active

Econo operation is active

Outdoor unit quiet operation is active

The indoor unit receives a signal from the user interface

Current temperature setting

Airflow rate = Automatic

Airflow rate = Indoor unit quiet

Airflow rate = High

Airflow rate = Medium high

Airflow rate = Medium

Airflow rate = Medium low

User reference guide

12

Airflow rate = Low

Comfort operation is active

Intelligent eye is active

Automatic vertical swing is active

Automatic horizontal swing is active

CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

Icon Description

a

3.2.3 To operate the user interface

3 | About the system

Flash Streamer (air cleaning) is active

ON timer is active

OFF timer is active

Weekly timer is active

Day of the week

Current time

a Signal receiver

1 Aim the signal transmitter at the signal receiver on the indoor unit (maximum

distance for communication is 7m).

Result: When the indoor unit receives a signal from the user interface, you will
hear a sound:

Sound Description

Beep-beep Operation starts.

Beep Setting changes.

Long beep Operation stops.

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

User reference guide

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4 | Before operation

2

3

1

AAA.LR03

cba

2×

4 Before operation

4.1 Overview: Before operation

4.2 To insert the batteries

This chapter describes what you have to do before operating the unit.

Typical workflow

Before operation usually consist of the following stages:

▪ Inserting the batteries in the user interface.

▪ Fixing the user interface to the wall.

▪ Setting the brightness of the indoor unit display.

▪ Setting the clock.

▪ Turning on the power supply.

The batteries will last for about 1 year.

1 Remove the front cover.

2 Insert both batteries at once.

3 Put back the front cover.

INFORMATION

▪ Low energy of battery is indicated by flashing of LCD display.
▪ ALWAYS replace both batteries at once.

4.3 To fix the user interface to the wall

User reference guide

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CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

1 Choose a place where the signals reach the unit.

2 Attach the holder with screws to the wall or a similar location.

3 Hang the user interface on the user interface holder.

4.4 About the clock

If the indoor unit's internal clock is NOT set to the correct time, the ON timer, OFF
timer and weekly timer will NOT operate correctly. The clock must be set again:

▪ After a circuit breaker has turned the unit OFF.

▪ After a power failure.

▪ After replacing batteries in the user interface.

4.4.1 To set the clock

Note: If the time is NOT set, , , and blink.

4 | Before operation

a User interface
b Screws (field supply)
c User interface holder

1 Press .

Result: and blink

2 Press or to set the current day of the week.

Note: Holding down or increases or decreases the time setting rapidly.

Display Day of the week

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

3 Press .

Result: blinks.

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

4 Press or to set the correct time.

5 Press .

Result: Setting is complete. blinks.

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15

4 | Before operation

4.5 Brightness of the indoor unit display

4.5.1 To set the brightness of the indoor unit display

4.6 To turn on the power supply

Adjust the brightness of the indoor unit display as desired, or turn OFF the display.

1 Keep pressed for at least 2 seconds every time you need to change the

setting.

Result: Brightness will be changed in order: high, low, off.

1 Turn the circuit breaker on.

Result: The flap of the indoor unit will open and close to set the reference position.

User reference guide

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CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

5 Operation

5.1 Operation range

Use the system in the following temperature and humidity ranges for safe and
effective operation.

Outdoor temperature –20~52°CDB –20~24°CDB

In combination with outdoor unit RZAG

Cooling and drying

(a)

5 | Operation

Heating

–21~18°CWB

(a)

Indoor temperature 17~38°C DB

10~27°CDB

12~28°CWB

Indoor humidity ≤80%

(b)

—

In combination with outdoor units: RXM71N, 2MXM, 3MXM, 4MXM, 5MXM

Cooling and drying

(a)

Heating

(a)

Outdoor temperature –10~46°CDB –15~24°CDB

–15~18°CWB

Indoor temperature 18~37°C DB

10~30°CDB

14~28°CWB

Indoor humidity ≤80%

(b)

—

In combination with other outdoor units

Cooling and drying

(a)

Heating

(a)

Outdoor temperature –10~50°CDB –20~24°CDB

–21~18°CWB

Indoor temperature 18~37°C DB

10~30°CDB

14~28°CWB

Indoor humidity ≤80%

If operated outside the operation range:
(a) A safety device might stop the operation of the system.
(b) Condensation might occur on the indoor unit and drip.

(b)

—

5.2 When to use which feature

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

You can use the following table to determine which features to use:¨

INFORMATION

Operation modes: cooling, drying and automatic are NOT available for the heating
only version of the product.

Feature Tasks

Basic features

User reference guide

17

5 | Operation

Feature Tasks

Operation modes and

temperature

+ Airflow direction

Airflow rate

Advanced features

Flash Streamer

To start/stop the system and to set the
temperature:

▪ In Heating and Cooling mode, heat up or cool

down a room.

▪ In Fan only mode, blow air in a room without

heating or cooling.

▪ In Drying mode, decrease the humidity in a

room.

▪ In Automatic mode, an appropriate

temperature and operation mode is
automatically selected.

To adjust the airflow direction (swing or fixed
position).

To adjust the amount of air blown into the
room.

To run more quietly.

To remove airborne allergens such as pollen,
adjuvant substances…

To reduce bad odors.

Econo

To use the system when you are also using
other power-consuming appliances.

To save energy.

Outdoor unit quiet

To decrease the noise level of the outdoor unit.
Example: At night.

Comfort

To automatically adjust the airflow direction to
cool down or heat up the room more effectively.

Intelligent eye

To prevent the air from coming in direct contact
with people.

To save energy when nobody is in the room.

Powerful

ON timer + OFF timer

Weekly timer

To cool down or heat up the room quickly.

To automatically turn ON or OFF the system.

To automatically turn ON or OFF the system on
a weekly basis.

Additional features

Wireless LAN connection To operate the unit using smart appliances.

5.3 Operation mode and temperature setpoint

User reference guide

18

When. Adjust the system operation mode and set the temperature when you want
to:

▪ Heat up or cool down a room

▪ Blow air in a room without heating or cooling

CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

5 | Operation

▪ Decrease the humidity in a room

What. The system operates differently, depending on the user selection.

INFORMATION

Operation modes: cooling, drying and automatic are NOT available for the heating
only version of the product.

Setting Description

Automatic

The system cools down or heats up a room to
the temperature setpoint. It automatically
switches between cooling and heating if
necessary.

Drying

The system decreases the humidity in a room
without changing the temperature.

Heating

The system heats up a room to the temperature
setpoint.

Cooling

The system cools down a room to the
temperature setpoint.

Fan

The system only controls the airflow (airflow
rate and airflow direction).

The system does NOT control the temperature.

Additional info:

▪ Outside temperature. The system's cooling or heating effect decreases when the

outside temperature is too high or too low.

▪ Defrost operation. During heating operation, frost might occur on the outdoor

unit and decrease the heating capacity. In that case, the system automatically
switches to defrosting operation to remove the frost. During defrosting
operation, hot air is NOT blown from the indoor unit.

▪ Humidity sensor. Control the humidity by decreasing the humidity during cooling

process.

5.3.1 To start/stop operation mode and to set the temperature

: Unit is operating.

: Operation mode = Automatic

: Operation mode = Drying

: Operation mode = Cooling

: Operation mode = Heating

: Operation mode = Fan only

: Shows the set temperature.

1 Press one or more times to select the operation mode.

Result: The mode will be set as follows:

CTXM15+FTXM20~71N2V1B
Daikin room air conditioner
4P518786-3F – 2020.05

User reference guide

19

5 | Operation

2 Press to start operation.

Result: and the selected mode are displayed on the LCD.

3 Press or one or more times to lower or raise the temperature.

5.4 Airflow rate

Cooling operation Heating operation Automatic

operation

Drying or Fan only
operation

18~32°C 10~30°C 18~30°C —

Note: When using drying or fan only mode, you cannot adjust the temperature.

4 Press to stop operation.

Result: disappears from the LCD. The operation lamp goes off.

1 Press to choose:

5 airflow rate levels, from " " to " "

Automatic operation

Indoor unit quiet operation. When the airflow is set to " ", the
noise from the unit will be reduced.

INFORMATION

▪ If the unit reach the temperature setpoint in cooling, heating or automatic mode.

Fan will stop operating.

▪ When using drying operation mode, you CANNOT adjust the airflow rate setting.

5.4.1 To adjust the airflow rate

1 Press to change the airflow setting as follows:

5.5 Airflow direction

When. Adjust the airflow direction as desired.

What. The system directs the airflow differently, depending on the user selection

(swinging or fixed position). It does so by moving horizontal blades (flaps) or
vertical blades (louvers).

Vertical automatic swing

Horizontal automatic

+ 3-D airflow direction

Setting Airflow direction

Moves up and down.

Moves from side to side.

swing

Moves alternately up and down and from side
to side

User reference guide

20

[—] Stays in a fixed position.

CTXM15+FTXM20~71N2V1B

Daikin room air conditioner

4P518786-3F – 2020.05

CAUTION

a

b

c

ALWAYS use a user interface to adjust the position of the flaps and louvers. When
the flaps and louvers are swinging and you move them forcibly by hand, the
mechanism will break.

The movable range of the flap varies according to the operation mode. The flap will
stop at the upper position when the airflow rate is changed to low during the up
and down swing setting.

a Flap range in cooling or drying operation
b Flap range in heating operation
c Flap range in fan only operation

5.5.1 To adjust vertical airflow direction

5 | Operation

1 Press .

Result: appears on the LCD. The flaps (horizontal blades) will begin to

swing.

2 To use fixed position, press when the flaps reach the desired position.

Result: disappears from the LCD. The flaps will stop moving.

5.5.2 To adjust horizontal airflow direction

1 Press .

Result: appears on the LCD. The louvers (vertical blades) will begin to

swing.

2 To use fixed position, press when the louvers reach the desired position.

Result: disappears from the LCD. The louvers will stop moving.

INFORMATION

When the unit is installed in a corner of a room, the direction of the louvers should
be facing away from the wall. Efficiency will drop if a wall blocks the air.

5.5.3 To use 3-D airflow direction

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1 Press and .

Result: and appear on the LCD. The flaps (horizontal blades) and

louvers (vertical blades) will begin to swing.

2 To use fixed position, press and when the flaps and louvers reach

the desired position.

Result: and disappear from the LCD. The flaps and the louvers will
stop moving.

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21

5 | Operation

5.6 Comfort airflow and Intelligent eye operation

5.6.1 Comfort airflow operation

You can use Comfort and Intelligent eye operation separately, or combine them.

This operation can be used in heating or cooling operation mode. It will provide a
comfortable wind that will NOT come in direct contact with people. The system
automatically sets the fixed airflow position upward in Cooling and downward in
Heating operation mode.

Cooling operation mode Heating operation mode

INFORMATION

Powerful and Comfort airflow operation CANNOT be used at the same time. The last
selected function takes priority. If the vertical automatic swing is selected, Comfort
airflow operation will be cancelled.

5.6.2 Intelligent eye operation

The system detects movement in the room and automatically adjusts the airflow
direction and temperature in order to avoid direct contact with people. If no
movement is detected for 20 minutes, the system switches to energy saving
operation:

Operation Energy saving operation

Heating Temperature is lowered by 2°C.

Cooling and drying If the temperature in the room is:

Fan only Decreases airflow rate.

About the Intelligent eye sensor

▪ <30°C, the temperature is raised by 2°C

▪ ≥30°C, the temperature is raised by 1°C

NOTICE

▪ Do NOT hit or push the Intelligent eye sensor. Doing so may lead to malfunction.
▪ Do NOT place large objects near the Intelligent eye sensor.

INFORMATION

Powerful or Night set operation CANNOT be used at the same time with Intelligent
eye operation. The last selected function takes priority.

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22

▪ Detection range. Up to 7m.

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5 | Operation

90°

7 m

55°

7 m

55°

Vertical angle (side view)

▪ Detection sensitivity. Changes according to location, the number of persons in

the room, temperature range, etc.

▪ Detection mistakes. The sensor may mistakenly detect pets, sunlight, moving

curtains, etc.

5.6.3 To start/stop Comfort and Intelligent eye operation

1 Press one or more times.

Result: The setting will change as follows:

Display Operation

Horizontal angle (top view)

Comfort airflow

+

— Both deactivated

Note: If there are people close to the front of the indoor unit or there are too
many people, use both operations at the same time.

2 To stop operation, press until both symbols disappear from the LCD.

5.7 Powerful operation

This operation quickly maximizes the cooling/heating effect in any operation mode.
You can get the maximum capacity.

Intelligent eye

Comfort airflow and Intelligent eye

INFORMATION

Powerful operation CANNOT be used together with Econo, Comfort airflow,
Intelligent eye and Outdoor unit quiet operation. The last selected function takes
priority.

Powerful operation will NOT increase the capacity of the unit if it already operates at
maximum capacity.

5.7.1 To start/stop Powerful operation

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1 Press to start.

Result: is displayed on the LCD. Powerful operation runs for 20 minutes;

after that, operation returns to the previously set mode.

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23

5 | Operation

Mode Airflow rate

Cooling/Heating/Automatic ▪ To maximize the cooling/heating

effect, the capacity of outdoor unit is
increased.

▪ The airflow rate is fixed to the

maximum setting and CANNOT be
changed.

▪ The temperature can be set only in

Automatic mode.

Drying ▪ The temperature setting is lowered by

2.5°C.

▪ The airflow rate is slightly increased.

Fan only The airflow rate is fixed to the

maximum setting.

2 Press to stop.

Result: disappears from the LCD.

Note: Powerful operation can be set only when the unit is running. If you press ,

operation will be cancelled; disappears from the LCD.

5.8 Econo and Outdoor unit quiet operation

5.8.1 Econo operation

This is a function which enables efficient operation by limiting the maximum power
consumption value. This function is useful for cases in which attention should be
paid to ensure a circuit breaker will not trip when the product runs alongside other
appliances.

INFORMATION

▪ Powerful and Econo operation CANNOT be used at the same time. The last

selected function takes priority.

▪ Econo operation reduces power consumption of the outdoor unit by limiting the

rotation speed of the compressor. If power consumption is already low, Econo
operation will NOT further reduce power consumption.

5.8.2 Outdoor unit quiet operation

Use Outdoor unit quiet operation when you want to decrease the noise level of the
outdoor unit. Example: At night.

INFORMATION

▪ Powerful and Outdoor unit quiet operation CANNOT be used at the same time.

The last selected function takes priority.

▪ This function is only available in Automatic, Cooling, and Heating operation.
▪ Outdoor unit quiet operation limits the rotation speed of the compressor. If the

rotation speed of compressor is already low, Outdoor unit quiet operation will
NOT further reduce the compressor rotation speed.

User reference guide

24

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5.8.3 To start/stop Econo and Outdoor unit quiet operation

1 Press one or more times.

Result: The setting will change as follows.

Display Operation

Econo

Outdoor unit quiet

+ Econo and Outdoor unit quiet

— Both deactivated

2 To stop operation, press until both symbols disappear from the LCD.

Note: Econo operation can be only set when the unit is running. Pressing

cancels the setting and disappears from the LCD.

Note: remains on the LCD, even if you turn off the unit using the user interface
or indoor unit ON/OFF switch.

5 | Operation

5.9 Flash Streamer (air cleaning) operation

Streamer generates a high-speed electron stream with a high oxidizing power,
reducing bad odours. Together with the titanium apatite deodorizing filter and the
air filters, this function cleans the air in the room.

INFORMATION

▪ The high-speed electrons are generated and go away inside the unit to ensure

safe operation.

▪ The Streamer discharge may generate a fizzing sound.
▪ If the airflow becomes weak, the Streamer discharge may stop temporarily to

prevent ozone smell.

5.9.1 To start/stop Flash Streamer (air cleaning) operation

1 Press .

Result: is displayed on the LCD and the air in the room is cleaned.

2 To stop operation, press .

Result: disappears from the LCD and operation stops.

5.10 OFF/ON timer operation

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Timer functions are useful for automatically switching the air conditioner on/off at
night or in the morning. You can also use OFF timer and ON timer in combination.

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25

5 | Operation

5.10.1 To start/stop OFF timer operation

INFORMATION

Program the timer again in case of:

▪ A breaker has turned the unit off.
▪ A power failure.
▪ After replacing batteries in the user interface.

INFORMATION

The clock MUST be set correctly before using any timer functions. Refer to "4.4.1To

set the clock"[415].

1 Press to start.

Result: is displayed on the LCD, the timer lamp lights up, and

blinks. and the day of the week disappear from the LCD.

2 Press or to change the time setting.

3 Press again.

Result: and the set time are displayed on the LCD.

Result: The timer lamp lights up.

INFORMATION

Each time or is pressed, the time setting advances by 10 minutes. Holding
the button down will change the setting rapidly.

4 To stop operation, press .

Result: and disappear from the LCD and the timer lamp goes off. and

the day of the week are displayed on the LCD.

INFORMATION

When you set the ON/OFF timer, the time setting is stored in the memory. The
memory will be reset when the user interface batteries are replaced.

Use of night set mode in combination with OFF timer

The air conditioner automatically adjusts the temperature setting (0.5°C up in
cooling, 2.0°C down in heating) to prevent excessive cooling/heating and ensure a
comfortable sleeping temperature.

5.10.2 To start/stop ON timer operation

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26

1 Press to start.

Result: is displayed on the LCD, the timer lamp lights up, and

blinks. and the day of the week disappear from the LCD.

2 Press or to change the time setting.

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3 Press again.

6:00 8:30 17:30

25°C 27°C

22:00

1 2 3 4

ON OFF ON OFF

6:00 8:30 17:30

25°C 27°C

22:00

1 2 3 4

ON OFF ON OFF

8:00 10:00 19:00 21:00

27°C 27°C25°C

ON OFF OFF ON

1 2 3 4

Result: and the set time are displayed on the LCD. The timer lamp lights up.

INFORMATION

Each time or is pressed, the time setting advances by 10 minutes. Holding
the button down will change the setting rapidly.

4 To stop operation, press .

Result: and disappear from the LCD and the timer lamp goes off.

and the day of the week are displayed on the LCD.

5.10.3 To combine OFF timer and ON timer

1 To set the timers, refer to "5.10.1To start/stop OFF timer operation"[4 26]

and "5.10.2To start/stop ON timer operation"[426].

Result: and are displayed on the LCD.

Example:

Display Current time Set while… Operation

5 | Operation

Note: If the timer setting is active, the current time is NOT displayed on the LCD.

5.11 Weekly timer operation

With this operation, you can save up to 4 timer settings for each day of the week.

Example: Create a different setting from Monday to Friday and a different setting
for weekends.

Day of the week Setting example

Monday

▪ Make up to 4settings.

Tuesday~Friday

▪ Use the copy mode if the

settings are the same as for
Monday.

6:00 the unit is

operating.

the unit is NOT
operating.

Stops at 7:00 and
starts at 14:00.

Starts at 14:00.

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Saturday

—

▪ No timer setting

Sunday

▪ Make up to 4settings.

▪ ON-ON-ON-ON setting. Enables scheduling the operation mode and set

temperature.

▪ OFF-OFF-OFF-OFF setting.Only the turn off time can be set for each day.

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27

5 | Operation

5.11.1 To set Weekly timer operation

Note: Be sure to aim the user interface at the indoor unit and check for a receiving
tone when setting the Weekly timer operation.

INFORMATION

The clock MUST be set correctly before using any timer functions. Refer to "4.4.1To

set the clock"[415].

INFORMATION

▪ Weekly timer and ON/OFF timer operation CANNOT be used at the same time.

The ON/OFF timer operation takes priority. Weekly timer will be in standby,

disappears from the LCD. When the ON/OFF timer is completed, the

Weekly timer becomes active.

▪ The day of the week, ON/OFF timer mode, time and temperature (only for ON

timer) can be set with the Weekly timer. Other settings are based on previous ON
timer setting.

1 Press .

Result: The day of the week and the reservation number of the current day

are displayed.

2 Press or to select the day of the week and the reservation number.

3 Press .

Result: The day of the week is set. and blink.

4 Press or to select the mode.

Result: The setting will change as follows:

Display Feature

ON timer

OFF timer

Blank Deletes reservation

5 Press .

Result: The ON/OFF timer mode is set. and the time blink.

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28

Note: Press to return to the previous screen. If blank is selected, continue
to step 9.

6 Press or to select the time. The time can be set between 0:00~23:50 in

10-minute intervals.

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5 | Operation

7 Press .

Result: The time is set and and the temperature blink.

Note: Press to return to the previous screen. If OFF timer is selected,

continue to step 9.

8 Press or to select the desired temperature.

Note: The set temperature for the weekly timer is displayed only when setting the

weekly timer mode.

INFORMATION

The temperature can be set between 10~32°C on the user interface, however:

▪ in cooling and automatic operation mode, the unit will operate at minimum 18°C

even if is set at 10~17°C;

▪ in heating and automatic operation mode, the unit will operate at maximum 30°C

even if is set at 31~32°C.

9 Press .

10 Repeat the previous procedure to set another reservation or press to

Result: is displayed on the LCD.

Note: A reservation can be copied with the same settings to another day. Refer to

"5.11.2To copy reservations"[429].

5.11.2 To copy reservations

A reservation can be copied to another day. The complete reservation of the
selected day of the week will be copied.

1 Press .

2 Press or to select the day of the week to be copied.

3 Press .

Result: The temperature and time are set for the ON timer. The time is set for

the OFF timer. The timer lamp lights orange.

Result: A new reservation screen will appear.

complete the setting.

Result: The reservation of the selected day of the week will be copied.

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4 Press or to select the destination day.

5 Press .

Result: The whole reservation is copied to the selected day and the timer lamp

lights orange.

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29

5 | Operation

5.11.3 To confirm reservations

Note: To copy to another day, repeat the procedure.

6 Press to complete the setting.

Result: is displayed on the LCD.

Note: To change the reservation setting after copying, refer to "5.11.1 To set

Weekly timer operation"[428].

You can confirm if all reservations are set to your needs.

1 Press .

Result: The day of the week and the reservation number of the current day

are displayed.

2 Press or to select the day of the week and reservation number to be

confirmed and check the reservation details.

Note: To change the reservation setting, refer to "5.11.1 To set Weekly timer

operation"[428].

3 Press to exit the confirmation mode.

5.11.4 To deactivate and reactivate Weekly timer operation

1 To deactivate the Weekly timer, press while is displayed on

the LCD.

Result: disappears from the LCD and the timer lamp goes off.

2 To reactivate the Weekly timer, press again.

Result: The last set reservation mode will be used.

5.11.5 To delete reservations

To delete individual reservations

Use this function if you want to delete a single reservation setting.

1 Press .

Result: The day of the week and the reservation number are displayed.

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30

2 Press or to select the day of the week to be deleted.

3 Press .

Result: , , and blink.

4 Press or and select "blank".

Result: The setting will change as follows:

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5 Press .

Result: The selected reservation is deleted.

6 Press to exit.

Result: Remaining reservations will be active.

To delete a reservation for each day of the week

Use this function if you want to delete all reservation settings for one day of the
week. This can be used in confirmation or setting mode.

1 Press or to select the day of the week to be deleted.

2 Hold for about 5seconds.

Result: All reservations for the selected day will be deleted.

To delete all reservations

Use this function if you want to delete all reservations for all days of the week in
one go. This procedure CANNOT be used in the setting mode.

1 Hold for about 5seconds while in the default display.

5 | Operation

Result: All reservations will be deleted.

5.12 Wireless LAN connection

The customer is responsible for providing:

▪ Smartphone or tablet with minimum supported version of Android or iOS,

specified on http://www.onlinecontroller.daikineurope.com

▪ Internet line and communication device, such as a modem, router, etc.

▪ Wireless LAN access point

▪ Installed free Daikin Online Controller application

5.12.1 Precautions when using the wireless adapter

Do NOT use near:

▪ Medical equipment. E.g. persons using cardiac pacemakers or defibrillators. This

product may cause electromagnetic interference.

▪ Auto-control equipment. E.g. automatic doors or fire alarm equipment. This

product may cause faulty behaviour of the equipment.

▪ Microwave oven. It may affect wireless LAN communications.

5.12.2 To install the Daikin Online Controller application

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1 Open:

▪ Google Play for appliances using Android.
▪ App Store for appliances using iOS.

2 Search for Daikin Online Controller.

3 Follow the directions on the screen to install.

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31

5 | Operation

a
b

c

d

e

A B

C D

5.12.3 Wireless adapter components

a RUN lamp (orange)
b AP lamp (yellow)

c SETUP button
d MODE button
e POWER button

Purpose

RUN Lights when connecting to a router (Wireless LAN access point).

AP Lights when connected directly to a smartphone.

SETUP Use when connecting to a router (Wireless LAN access point).

MODE Switches modes (RUN/AP) when held down.

POWER Turns the WLAN adapter ON or OFF when pressed.

5.13 About Multi system

In Multi system, 1 outdoor unit is connected to multiple indoor units.

5.13.1 Priority room setting

Priority room setting requires initial programming during installation. Please
consult your authorized dealer for assistance.

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32

When priority room setting is inactive or not present

When more than 1 indoor unit is operating, priority is given to the first unit that
was turned on. Set other units to the same operation mode. Otherwise, they will
enter the standby mode, and the operation lamp will flash (does NOT indicate
malfunction).

Exceptions: If the first unit that was turned on is set to fan only, and then in the
other room heating mode is set, priority will be given to the unit set to the heating
mode. The first unit will go in standby and the operation lamp will flash.

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5 | Operation

INFORMATION

▪ The cooling, drying, and fan only operation modes may be used at the same time.
▪ The automatic operation mode automatically selects cooling or heating,

depending on the room temperature. If the automatic operation mode is
selected for all units, all units will operate in the mode of the first unit that was
turned on.

Priority when using Outdoor unit quiet operation

Refer to "5.8.2Outdoor unit quiet operation"[424].

1 Set Outdoor unit quiet operation in all rooms using the user interfaces of the

units.

2 To cancel Outdoor unit quiet operation, you may stop operation in 1 room

using a user interface.

Result: Operation will stop in all rooms. will remain on the display of the
other user interfaces.

3 To remove the symbol from the other user interfaces, stop Outdoor unit quiet

operation in all rooms separately.

Result: The symbol will disappear.

When priority room setting is active

You can select a different operation mode for each room.

Example: Room A has priority, cooling operation mode is selected.

Operation mode in room B, C, D Status of room B, C and D

Cooling, drying or fan only Current operation mode maintained

Heating Standby mode. Operation resumes when room

Automatic If cooling operation continues. If heating units

Priority when using Powerful operation

Example: Room A has priority. Rooms B, C and D are operating.

1 Set Powerful operation in room A.

Result: Capacity in room A is increased. Cooling or heating efficiency in rooms B, C

and D may be slightly reduced.

Priority when using Outdoor unit quiet operation

Example: Room A has priority.

A stops operating.

enter standby mode. Operation resumes when
room A stops operating.

5.13.2 Night quiet mode

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2 Set Outdoor unit quiet operation on one unit.

Result: All units enter the Outdoor unit quiet operation mode at once.

The Night quiet mode requires initial programming during installation. Please
consult your dealer for assistance. This mode reduces the operation noise of the
outdoor unit during the night by reducing the cooling efficiency.

The Night quiet mode is activated automatically when the temperature drops ≥5°C
below the highest temperature recorded that day.

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33

5 | Operation

5.13.3 Cooling/heating mode lock

The Cooling/heating mode lock requires initial programming during installation.
Please consult your authorized dealer for assistance. The Cooling/heating mode
lock sets the unit forcibly to either cooling or heating operation. Activate this
function if you wish to set all indoor units connected In a multi-system to 1
operation mode.

INFORMATION

The Cooling/heating mode lock CANNOT be activated together with the priority room

setting.

User reference guide

34

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6 | Energy saving and optimum operation

6 Energy saving and optimum operation

INFORMATION

▪ Even if the unit is turned OFF, it consumes electricity.
▪ When the power turns back on after a power break, the previously selected

mode will be resumed.

CAUTION

NEVER expose little children, plants or animals directly to the airflow.

WARNING

Do NOT place objects below the indoor and/or outdoor unit that may get wet.
Otherwise condensation on the unit or refrigerant pipes, air filter dirt or drain
blockage may cause dripping, and objects under the unit may get dirty or damaged.

WARNING

Do NOT place a flammable spray bottle near the air conditioner and do NOT use
sprays near the unit. Doing so may result in a fire.

CAUTION

Do NOT operate the system when using a room fumigation-type insecticide.
Chemicals could collect in the unit, and endanger the health of people who are
hypersensitive to chemicals.

Observe the following precautions to ensure the system operates properly.

▪ Prevent direct sunlight from entering a room during cooling operation by using

curtains or blinds.

▪ Make sure the area is well ventilated. Do NOT block any ventilation openings.

▪ Ventilate often. Extended use requires special attention to ventilation.

▪ Keep doors and windows closed. If the doors and windows remain open, air will

flow out of your room causing a decrease in the cooling or heating effect.

▪ Be careful NOT to cool or heat too much. To save energy, keep the temperature

setting at a moderate level.

▪ NEVER place objects near the air inlet or the air outlet of the unit. Doing so may

cause a reduced heating/cooling effect or stop operation.

▪ Turn off the main power supply switch to the unit when the unit is NOT used for

longer periods of time. If the main power supply switch is on, the unit consumes
electricity. Before restarting the unit, turn on the main power supply switch 6
hours before operation to ensure smooth running.

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▪ Condensation may form if the humidity is above 80% or if the drain outlet gets

blocked.

▪ Adjust the room temperature properly for a comfortable environment. Avoid

excessive heating or cooling. Notice that it may take some time for the room
temperature to reach the set temperature. Consider using the timer setting
options.

▪ Adjust the air flow direction to avoid cool air from gathering on the floor or warm

air against the ceiling. (Up during cooling or dry operation to the ceiling and
down during heating operation.)

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35

6 | Energy saving and optimum operation

▪ Avoid direct air flow to room inhabitants.

▪ Operate the system within the recommended temperature range (26~28°C for

cooling and 20~24°C for heating) to save energy.

User reference guide

36

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7 Maintenance and service

7.1 Overview: Maintenance and service

The installer has to perform a yearly maintenance.

About the refrigerant

This product contains fluorinated greenhouse gases. Do NOT vent gases into the
atmosphere.

Refrigerant type: R32

Global warming potential (GWP) value: 675

NOTICE

Applicable legislation on fluorinated greenhouse gases requires that the refrigerant
charge of the unit is indicated both in weight and CO2 equivalent.

Formula to calculate the quantity in CO2 equivalent tonnes: GWP value of the
refrigerant × total refrigerant charge [in kg] / 1000

Please contact your installer for more information.

7 | Maintenance and service

WARNING

The refrigerant inside the unit is mildly flammable, but normally does NOT leak. If the
refrigerant leaks in the room and comes in contact with fire from a burner, a heater,
or a cooker, this may result in fire, or the formation of a harmful gas.

Turn off any combustible heating devices, ventilate the room, and contact the dealer
where you purchased the unit.

Do NOT use the unit until a service person confirms that the part from which the
refrigerant leaked has been repaired.

WARNING

▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate the defrosting process

other than those recommended by the manufacturer.

▪ Be aware that the refrigerant inside the system is odourless.

WARNING

The appliance shall be stored in a room without continuously operating ignition
sources (example: open flames, an operating gas appliance or an operating electric
heater).

NOTICE

Maintenance MUST be done by an authorized installer or service agent.

We recommend performing maintenance at least once a year. However, applicable
legislation might require shorter maintenance intervals.

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DANGER: RISK OF ELECTROCUTION

To clean the air conditioner or air filter, be sure to stop operation and turn all power
supplies off. Otherwise, an electric shock and injury may result.

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37

7 | Maintenance and service

WARNING

To prevent electrical shocks or fire:

▪ Do NOT rinse the unit.
▪ Do NOT operate the unit with wet hands.
▪ Do NOT place any objects containing water on the unit.

CAUTION

After a long use, check the unit stand and fitting for damage. If damaged, the unit

may fall and result in injury.

CAUTION

Do NOT touch the heat exchanger fins. These fins are sharp and could result in

cutting injuries.

WARNING

Be careful with ladders when working in high places.

7.2 To clean the indoor unit and user interface

NOTICE

▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide.

Possible consequence: Discoloration and deformation.

▪ Do NOT use water or air of 40°C or higher. Possible consequence: Discoloration

and deformation.

▪ Do NOT use polishing compounds.
▪ Do NOT use a scrubbing brush. Possible consequence: The surface finishing peels

off.

DANGER: RISK OF ELECTROCUTION

Before cleaning, be sure to stop the operation, turn the breaker off or pull out the

supply cord. Otherwise, an electric shock and injury may result.

1 Clean with a soft cloth. If it is difficult to remove stains, use water or a neutral

detergent.

7.3 To clean the front panel

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38

1 Clean the front panel with a soft cloth. If it is difficult to remove stains, use

water or a neutral detergent.

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7.4 To remove the front panel

a

a

2

1

1 Hold the front panel by the panel tabs on both sides and open it.

a Panel tabs

2 Remove the front panel by sliding it to the left or the right and pulling it

toward you.

Result: The front panel shaft on 1 side will be disconnected.

3 Disconnect the front panel shaft on the other side in the same manner.

7 | Maintenance and service

a Front panel shaft

7.5 About the air filters

Operating the unit with dirty filters means that the filter:

▪ CANNOT deodorize the air,

▪ CANNOT clean the air,

▪ poor heating/cooling,

▪ causes odour.

7.6 To clean the air filters

1 Push the tab at the centre of each air filter, then pull it down.

2 Pull out the air filters.

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Note: (class 50~71) The titanium apatite deodorizing filter MUST be removed
before cleaning the air filter.

3 Remove the titanium apatite deodorizing filter from all 4 claws.

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39

7 | Maintenance and service

4 Wash the air filters with water or clean them with a vacuum cleaner.

a Claw

5 Soak in lukewarm water for about 10 to 15 minutes.

INFORMATION

▪ If the dust does NOT come off easily, wash them with a neutral detergent diluted

in lukewarm water. Dry the air filters in the shade.

▪ It is recommended to clean the air filters every 2 weeks.

7.7 To clean the titanium apatite deodorizing filter

INFORMATION

Clean the filter with water every 6 months.

1 Remove the titanium apatite deodorizing filter from the tabs (class 15~42) or

all 4 claws (class 50~71).

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40

Class 15~42

Class 50~71

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7 | Maintenance and service

a Claw

2 Remove the dust from the filter with a vacuum cleaner.

3 Soak the filter for 10 to 15minutes in warm water.

Note: (class 50~71) Do NOT remove the filter from the frame.

Class 15~42 Class 50~71

4 After washing, shake off remaining water and dry the filter in the shade. Do

NOT wring out the filter when removing water.

7.8 To replace the titanium apatite deodorizing filter

INFORMATION

Replace the filter every 3 years.

1 Remove the filter from the tabs (class 15~42) or frame (class 50~71) and

replace the filter with a new one.

Class 15~42 Class 50~71

INFORMATION

▪ Do NOT throw away the filter frame, but use it again.
▪ Dispose of the old filter as non-flammable waste.

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To order titanium apatite deodorizing filters, contact your dealer.

Item Part number

Titanium deodorizing filter 1 set KAF970A46

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41

7 | Maintenance and service

7.9 To re-install the front panel

1 Attach the front panel. Align the shafts with the slots and push them all the

2 Close the front panel slowly; press at both sides and at the centre.

7.10 To take following items into account before a long idle period

Operate the unit several hours in fan only mode to dry the inside of the unit.

1 Press and select operation.

2 Press and start operation.

way in.

3 After operation stops, turn the breaker off.

4 Clean the air filters and replace them in their original position.

5 Remove the batteries from the user interface.

INFORMATION

It is recommended to have periodical maintenance performed by a specialist. For

specialist maintenance, contact your dealer. Maintenance costs shall be borne by the

customer.

In certain operating conditions the inside of the unit may get dirty after several

seasons of use. This results in poor performance.

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8 Troubleshooting

If one of the following malfunctions occur, take the measures shown below and
contact your dealer.

WARNING

Stop operation and shut off the power if anything unusual occurs (burning smells
etc.).

Leaving the unit running under such circumstances may cause breakage, electric
shock or fire. Contact your dealer.

The system MUST be repaired by a qualified service person.

8 | Troubleshooting

Malfunction Measure

If a safety device such as a fuse, a breaker or an
earth leakage breaker frequently actuates or the

Turn OFF the main power
switch.

ON/OFF switch does NOT properly work.

If water leaks from the unit. Stop the operation.

The operation switch does NOT work well. Turn OFF the power supply.

If the user interface display indicates the unit
number, the operation lamp flashes and the

Notify your installer and report
the malfunction code.

malfunction code appears.

If the system does NOT operate properly except for the above mentioned cases
and none of the above mentioned malfunctions is evident, investigate the system
in accordance with the following procedures.

Malfunction Measure

If the system does NOT
operate at all.

▪ Check if there is no power failure. Wait until

power is restored. If a power failure occurs during
operation, the system automatically restarts
immediately after power is restored.

▪ Check if no fuse has blown or breaker is activated.

Change the fuse or reset the breaker if necessary.

▪ Check the batteries of the user interface.

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The system suddenly stops
operating.

The fan will stop during
airflow operation.

The flaps do NOT start to
swing immediately.

▪ Check the timer setting.

▪ Check if the air inlet or outlet of the outdoor or

indoor unit is NOT blocked by obstacles. Remove
any obstacles and make sure the air can flow
freely.

▪ The air conditioner may stop operating after

sudden large voltage fluctuations to protect the
system. It automatically resumes operation after
about 3minutes.

If the set temperature is reached, the airflow rate is
reduced and operation stops. Operation will resume
automatically when the indoor temperature rises or
falls.

The indoor unit is adjusting the position of the flaps.
The flaps will start moving soon.

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8 | Troubleshooting

Malfunction Measure

Operation does NOT start
soon.

The system operates, but
cooling or heating is
insufficient.

In case the ON/OFF button was pressed right after
operation was stopped or if the mode was changed.
Operation will start after 3minutes to protect the
system.

▪ Check the airflow rate setting. Refer to

"5.4Airflow rate"[420].

▪ Check the temperature setting. Refer to "5.3.1 To

start/stop operation mode and to set the
temperature"[419].

▪ Check if the airflow direction setting is

appropriate. Refer to "5.5Airflow direction"[420].

▪ Check if the air inlet or outlet of the outdoor or

indoor unit is NOT blocked by obstacles. Remove
any obstacles and make sure the air can flow
freely.

▪ Check if the air filters are clogged. Clean the air

filters. See "7Maintenance and service"[437].

▪ Check for open doors or windows. Close doors and

windows to prevent wind from coming in.

▪ Check if the unit operates in Econo or Outdoor

unit quiet operation. Refer to "5.8 Econo and

Outdoor unit quiet operation"[424].

The system operates, but
heating is insufficient (air is
NOT blown from the unit).

The ON/OFF timer does
NOT operate according to
the settings.

Cooling operation CANNOT
be selected.

An abnormal function
happens during operation.

The unit does NOT receive
signals from the user
interface.

▪ Check if there is any furniture directly under or

next to the indoor unit. Move the furniture.

▪ The air conditioner may be warming up for heating

operation. Wait for 1 to 4 minutes.

▪ If a flowing sound is heard, the outdoor unit may

be in defrost operation. Wait for 4 to 12 minutes.

▪ Check if the Weekly timer and ON/OFF timer are

set to the same time. Change or deactivate the
setting. Refer to "5.10 OFF/ON timer

operation" [4 25] and "5.11 Weekly timer
operation"[427].

▪ Check if the clock and the day of the week are set

correctly. Refer to "4.4About the clock"[415].

Check if your system is NOT heating only version.

The air conditioner may malfunction because of
lightning or radio waves. Turn the breaker OFF and
back ON.

▪ Check the batteries of the user interface. Refer to

"4.2To insert the batteries"[414].

▪ Make sure that the transmitter is NOT exposed to

direct sunlight.

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44

▪ Check if there are any electronic starter type

fluorescent lamps in the room. Contact your
dealer.

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8 | Troubleshooting

Malfunction Measure

The user interface display is

Replace the batteries of the user interface.

blank.

An error code is displayed
on the user interface.

Consult your local dealer. Refer to "8.2Solving

problems based on error codes"[446] for a

detailed list of error codes.

Other electric appliances
start to operate.

If the user interface signals operate other electric
appliances, move the other appliances away, and
contact your dealer.

If after checking all above items, it is impossible to fix the problem yourself, contact
your installer and state the symptoms, the complete model name of the unit (with
manufacturing number if possible) and the installation date (possibly listed on the
warranty card).

8.1 Symptoms that are NOT system malfunctions

The following symptoms are NOT system malfunctions:

8.1.1 Symptom: A sound like water flowing is heard

▪ This sound is caused by the refrigerant flowing in the unit.

▪ This sound may be generated when water is flowing away from the unit during

cooling or drying operation.

▪ The refrigerant flows in the air conditioner even if the indoor unit is turned off

and an indoor unit in another room is operating.

8.1.2 Symptom: A blowing sound is heard

This sound is generated when the direction of the refrigerant flow is changed (e.g.
when switching from cooling to heating).

8.1.3 Symptom: A ticking sound is heard

This sound is generated when the unit slightly expands or contracts with changes in
temperature.

8.1.4 Symptom: A whistling sound is heard

This sound is generated by the refrigerant flowing during defrost operation.

8.1.5 Symptom: A clicking sound during operation or idle time is heard

This sound is generated when the refrigerant control valves or electrical parts
operate.

8.1.6 Symptom: A clapping sound is heard

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This sound is generated when an external device sucks air out of the room (e.g.
exhaust fan, extractor hood) while the doors and windows in the room are closed.
Open the doors or windows, or turn off the device.

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8 | Troubleshooting

8.1.7 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)

8.1.8 Symptom: The units can give off odours

8.1.9 Symptom: The outdoor fan rotates while the air conditioner is not in operation

8.2 Solving problems based on error codes

When the system is changed over to heating operation after defrost operation.
Moisture generated by defrost becomes steam and is exhausted.

The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it
again.

▪ After operation has stopped. The outdoor fan continues to rotate for another

30 seconds for system protection.

▪ While the air conditioner is not in operation. When the outdoor temperature is

very high, the outdoor fan starts to rotate for system protection.

If the unit runs into a problem, the user interface displays an error code. It is
important to understand the problem and to take measures before resetting an
error code. This should be done by a licensed installer or by your local dealer.

This chapter gives you an overview of all possible error codes and their descriptions
as they appear on the user interface.

For detailed troubleshooting of each error, see the service manual.

Fault diagnosis by user interface

The user interface can receive an error code from the indoor unit referring to the
fault. It is important to understand the problem and take measures before
resetting the error code. This should be done by a licensed installer or your local
dealer.

To see the error code on the user interface:

1 Hold for about 5seconds.

Result: blinks in the temperature display section.

2 Press repeatedly until a continuous beep is heard.

Result: The code is now displayed on the display.

INFORMATION

▪ A short beep and 2 consecutive beeps indicate non-corresponding codes.

▪ To cancel the code display, hold the cancel button for 5 seconds. The

code will also disappear from the display if the button is NOT pressed within
1minute.

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46

System

Error code Description

Normal

Refrigerant shortage

Overvoltage detection

Signal transmission error (between indoor and outdoor unit)

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Error code Description

Indoor/outdoor unit combination fault

Indoor unit

Error code Description

Indoor unit PCB abnormality

Freeze-up protection or high-pressure control

Fan motor (DC motor) abnormality

Indoor heat exchanger thermistor abnormality

Room temperature thermistor abnormality

Outdoor unit

Error code Description

4-way valve abnormality

Outdoor unit PCB abnormality

Overload activation (compressor overload)

8 | Troubleshooting

Compressor lock

DC fan lock

Discharge pipe temperature control

High-pressure control (in cooling mode)

Compressor system sensor abnormality

Position sensor abnormality

DC voltage / current sensor abnormality

Outdoor temperature thermistor abnormality

Discharge pipe thermistor abnormality

Outdoor heat exchanger thermistor abnormality

Electrical parts heat error

Radiation fin temperature rise

Inverter instantaneous overcurrent (DC)

Radiation fin thermistor abnormality

8.3 Troubleshooting for wireless connection adapter

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The following table provides a brief description of how to deal with some
problems. If none of the following solutions fix the problem, go to http://

www.onlinecontroller.daikineurope.com/ for more information and FAQ.

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8 | Troubleshooting

Problem Measure

None of the LEDs light ▪ Try operating the unit with the user

interface.

▪ Turn the unit off and then back on.

▪ Make sure the LEDs are not disabled

in the application.

▪ Check if the adapter is installed

correctly.

The Wireless LAN adapter is not visible
on the unit overview screen ("Home"
screen) after the Wireless LAN adapter
has been configured.

When trying to make a direct
connection to the adapter (AP mode),
the Wireless LAN adapter is not visible
in the available Wi-Fi networks list of
the phone/tablet.

▪ Check that the power is on.

▪ Check that the RUN LED is lit.

▪ If the AP LED is lit, press the MODE

buttton for 2 seconds to switch to
RUN mode.

▪ If the RUN LED is blinking, try

connecting the WLAN adapter to the
wireless network again. Make sure
the Wireless LAN adapter is close
enough to the router (Wireless LAN
access point).

▪ If the RUN LED is lit, make sure that

the smartphone or tablet is
connected to the same wireless LAN
network as the Wireless LAN adapter.

▪ If the AP LED is not lit, press the

MODE button for 2seconds to switch
to AP mode.

▪ If the AP LED is blinking, please wait

until the AP LED is lit (approximately
1 minute). The Wireless LAN adapter
is still starting up.

8.4 Solving problems based on the LED on the outdoor unit

LED color Normal status

Green Flashing

Red Off

On

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▪ If the AP LED is lit, switch to RUN

mode by pressing the MODE button
for 2seconds. Now switch back to AP
mode by pressing the MODE button
again for 2 seconds. This procedure
will change the wireless channel on
which the Wireless LAN adapter is
operating. Repeat if necessary.

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Flashing

Off

— Any status

LED on outdoor unit printed circuit board for 2MXM series

Green Diagnosis

Micro-computer normal / LED-A

Normal, check indoor unit

Turn the power off and on again. If the LED display
recurs, the outdoor unit PCB is faulty.

Power supply fault

(a) May NOT apply in some cases. Refer to the service manual.

LED on outdoor unit printed circuit board for 3MXM, 4MXM, 5MXM series

Green Red Diagnosis

Micro-

Malfunction detection
comput
er
normal

LED-A LED1 LED2 LED3 LED4 LED5

(a)

8 | Troubleshooting

(a)

Normal, check indoor unit

High-pressure protector (on condenser) or low-pressure
protector (on evaporator) activated or indoor unit heat
exchanger is frozen up while the unit was operating or
was in standby mode

Overload relay activated or high discharge pipe
temperature

(b)

Faulty start of the compressor

Input overcurrent

Thermistor or current transformer abnormality

(b)

High temperature of the switchbox

High temperature at Inverter circuit heatsink

Output overcurrent

Refrigerant shortage

(b)

(b)

Low voltage to main circuit or momentary voltage loss

Reversing solenoid valve switching failure

— — — — Turn the power off and on again. If the LED display

— — — — Power supply fault

(a) LED5 is available only for 5MXM series.
(b) May NOT apply in some cases. Refer to the service manual.

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Fan motor fault

recurs, the outdoor unit PCB is faulty.

(b)

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9 | Disposal

9 Disposal

NOTICE

Do NOT try to dismantle the system yourself: dismantling of the system, treatment of
the refrigerant, oil and other parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for reuse, recycling and recovery.

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10 Glossary

Dealer

Authorised installer

User

Applicable legislation

Service company

Installation manual

10 | Glossary

Sales distributor for the product.

Technical skilled person who is qualified to install the product.

Person who is owner of the product and/or operates the product.

All international, European, national and local directives, laws, regulations
and/or codes that are relevant and applicable for a certain product or
domain.

Qualified company which can perform or coordinate the required service to
the product.

Instruction manual specified for a certain product or application, explaining
how to install, configure and maintain it.

Operation manual

Instruction manual specified for a certain product or application, explaining
how to operate it.

Accessories

Labels, manuals, information sheets and equipment that are delivered with
the product and that need to be installed according to the instructions in
the accompanying documentation.

Optional equipment

Equipment made or approved by Daikin that can be combined with the
product according to the instructions in the accompanying documentation.

Field supply

Equipment NOT made by Daikin that can be combined with the product
according to the instructions in the accompanying documentation.

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Verantwortung für Energie und Umwelt

Copyright 2018 Daikin

4P518786-3F 2020.05