Daikin ATXM20R2V1B, ATXM20R5V1B, ATXM25R2V1B, ATXM25R5V1B, ATXM35R2V1B User reference guide

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User reference guide

Daikin room air conditioner

ATXM20R2V1B

ATXM20R5V1B

ATXM25R2V1B

ATXM25R5V1B

ATXM35R2V1B

ATXM35R5V1B

ATXM50R2V1B

Table of contents

1	About the documentation			4
	1.1	About this document ......................................................................................................................................................		4
2	General safety precautions			5
	2.1	About the documentation ..............................................................................................................................................		5
		2.1.1	Meaning of warnings and symbols ................................................................................................................	5
3	User safety instructions			7
	3.1	General	............................................................................................................................................................................	7
	3.2	Instructions .......................................................................................................................................for safe operation		8
4	About the system			12
	4.1	Indoor unit ......................................................................................................................................................................		12
		4.1.1 ..........................................................................................................................................	Indoor unit display	13
	4.2	About the .................................................................................................................................................user interface		13
		4.2.1 ..........................................................................................................................	Components: User interface	14
		4.2.2 ..............................................................................................................................	Status: User interface LCD	15
		4.2.3 ........................................................................................................................	To operate the user interface	16
5	Before operation			17
	5.1	Overview: ...........................................................................................................................................Before operation		17
	5.2	To insert ....................................................................................................................................................the batteries		17
	5.3	To mount ...............................................................................................................................the user interface holder		18
	5.4	About the ...............................................................................................................................................................clock		18
		5.4.1 ...............................................................................................................................................	To set the clock	18
	5.5	Brightness .............................................................................................................................of the indoor unit display		19
		5.5.1 ............................................................................................	To set the brightness of the indoor unit display	19
	5.6	To turn ..........................................................................................................................................on the power supply		19
6	Operation			20
	6.1	Operation ..............................................................................................................................................................range		20
	6.2	When to ............................................................................................................................................use which feature		20
	6.3	Operation ..................................................................................................................mode and temperature setpoint		21
		6.3.1 ..........................................................................	To start/stop operation mode and to set the temperature	22
	6.4	Airflow rate .....................................................................................................................................................................		23
		6.4.1 ...............................................................................................................................	To adjust the airflow rate	23
	6.5	Airflow direction .............................................................................................................................................................		23
		6.5.1 ................................................................................................................	To adjust vertical airflow direction	24
		6.5.2 ............................................................................................................	To adjust horizontal airflow direction	24
		6.5.3 ...........................................................................................................................	To use 3 - D airflow direction	24
	6.6	Comfort ..............................................................................................................airflow and Intelligent eye operation		25
		6.6.1 .............................................................................................................................	Comfort airflow operation	25
		6.6.2 ................................................................................................................................	Intelligent eye operation	25
		6.6.3 ....................................................................................	To start/stop Comfort and Intelligent eye operation	26
	6.7	Powerful .........................................................................................................................................................operation		26
		6.7.1 ..................................................................................................................	To start/stop Powerful operation	27
	6.8	Econo and .......................................................................................................................Outdoor unit quiet operation		27
		6.8.1 .............................................................................................................................................	Econo operation	27
		6.8.2 .........................................................................................................................	Outdoor unit quiet operation	27
		6.8.3 ................................................................................	To start/stop Econo and Outdoor unit quiet operation	28
	6.9	Flash Streamer .........................................................................................................................(air cleaning) operation		28
		6.9.1 ..................................................................................	To start/stop Flash Streamer (air cleaning) operation	28
	6.10	OFF/ON .................................................................................................................................................timer operation		28
		6.10.1 .................................................................................................................	To start/stop OFF timer operation	29
		6.10.2 ..................................................................................................................	To start/stop ON timer operation	29
		6.10.3 .............................................................................................................	To combine OFF timer and ON timer	30
	6.11	Weekly ..................................................................................................................................................timer operation		30
		6.11.1 ......................................................................................................................	To set Weekly timer operation	31
		6.11.2 ......................................................................................................................................	To copy reservations	32
		6.11.3 .................................................................................................................................	To confirm reservations	33
		6.11.4 ..................................................................................	To deactivate and reactivate Weekly timer operation	33
		6.11.5 ....................................................................................................................................	To delete reservations	33
	6.12	Wireless ................................................................................................................................................LAN connection		34
		6.12.1 .....................................................................................................	Precautions when using the wireless LAN	34
		6.12.2 .................................................................................	To install the Daikin Residential Controller application	34
		6.12.3 ......................................................................................................................	To set the wireless connection	35

User reference guide			ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B
2				Daikin room air conditioner
2				4P518786-6F – 2020.06

			Table of contents
	6.13	About Multi system.........................................................................................................................................................		38
		6.13.1	Priority room setting ......................................................................................................................................	38
		6.13.2	Night quiet mode............................................................................................................................................	39
		6.13.3	Cooling/heating mode lock in Multi-system..................................................................................................	39
7 Energy saving and optimum operation				40
8	Maintenance and service			42
	8.1	Overview: Maintenance and service ..............................................................................................................................		42
	8.2	To clean the indoor unit and user interface...................................................................................................................		43
	8.3	To clean the front panel .................................................................................................................................................		44
	8.4	To remove the front panel..............................................................................................................................................		44
	8.5	About the air filters.........................................................................................................................................................		44
	8.6	To clean the air filters .....................................................................................................................................................		44
	8.7	To clean the titanium apatite deodorising filter and the silver allergen removal air purifying filter ...........................		46
	8.8	To replace the titanium apatite deodorising filter and the silver allergen removal air purifying filter ........................		46
	8.9	To re-install the front panel............................................................................................................................................		47
	8.10	To take following items into account before a long idle period ....................................................................................		47
9	Troubleshooting			49
	9.1	Symptoms that are NOT system malfunctions...............................................................................................................		51
		9.1.1	Symptom: A sound like water flowing is heard .............................................................................................	51
		9.1.2	Symptom: A blowing sound is heard..............................................................................................................	51
		9.1.3	Symptom: A ticking sound is heard................................................................................................................	51
		9.1.4	Symptom: A whistling sound is heard............................................................................................................	51
		9.1.5	Symptom: A clicking sound during operation or idle time is heard ..............................................................	51
		9.1.6	Symptom: A clapping sound is heard.............................................................................................................	52
		9.1.7	Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................	52
		9.1.8	Symptom: The units can give off odours .......................................................................................................	52
		9.1.9	Symptom: The outdoor fan rotates while the air conditioner is not in operation .......................................	52

9.1.10Symptom: Indoor unit fan speed does not correspond with the setpoint (during low ambient cooling

		operation in Multi system).............................................................................................................................	52
	9.2	Solving problems based on error codes .........................................................................................................................	52
	9.3	Troubleshooting for wireless LAN connection ...............................................................................................................	54
10	Disposal		55
11	Glossary		56

ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B	User reference guide
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1 | About the documentation

1 About the documentation

1.1 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:

-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.

User reference guide	ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B
4	Daikin room air conditioner
4	4P518786-6F – 2020.06

2 | General safety precautions

2 General safety precautions

2.1About 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.

2.1.1 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/SCALDING

Indicates a situation that could result in burning/scalding 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.

NOTICE

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

INFORMATION

Indicates useful tips or additional information.

Symbols used on the unit:

ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B	User reference guide
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2 | General safety precautions

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".

User reference guide	ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B
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6	4P518786-6F – 2020.06

3 | User safety instructions

3 User safety instructions

Always observe the following safety instructions and regulations.

3.1 General

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.

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

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

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

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3 | User safety instructions

▪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:

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.

3.2Instructions for safe operation

WARNING: MILDLY FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

CAUTION

The indoor unit contains radio equipment, minimum separation distance between the radiating part of the equipment and the user is 10 cm.

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.

User reference guide	ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B
8	Daikin room air conditioner
8	4P518786-6F – 2020.06

3 | User safety instructions

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.

CAUTION

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.

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.

ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B	User reference guide
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3 | User safety instructions

User reference guide

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).

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.

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.

ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B

Daikin room air conditioner

4P518786-6F – 2020.06

3 | User safety instructions

WARNING

Improper detergents or cleaning procedure may cause damage on plastic components or water leakage. Splashed detergent on electric components, such as motors, may cause failure, smoke or ignition.

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.

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.

ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B	User reference guide
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4 | About the system

4 About the system

WARNING: MILDLY FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

CAUTION

The indoor unit contains radio equipment, minimum separation distance between the radiating part of the equipment and the user is 10 cm.

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.

4.1 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.

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.

INFORMATION

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

User reference guide	ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B
12	Daikin room air conditioner
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4 | About the system

m l

e f

aAir inlet

bAir outlet

cFront panel

dService cover

eIndoor unit display

fIntelligent eye sensor

gRoom temperature sensor

hOnly for class 20~35: Titanium apatite deodorising filter (without frame)

iOnly for class 50: Titanium apatite deodorising filter and silver allergen removal air purifying filter (with frame)

jAir filter

kFlaps (horizontal blades)

lLouvers (vertical blades)

4.1.1 Indoor unit display

ON/ OFF

b c d

aSignal receiver for user interface

bOperation lamp

cTimer lamp

dIntelligent eye lamp

eON/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

4.2About the user interface

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

ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B	User reference guide
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4 | About the system

▪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.

4.2.1Components: User interface

	p	c
	o	c
	o	d
		d
	n m	e
	l	f g
	k	h
		h
	j	i
		i

aSignal transmitter

bLCD display

cTemperature adjustment button

dON/OFF button

eVertical swing button

fHorizontal swing button

gComfort airflow and Intelligent eye operation button

hSelect button

iClock and indoor unit display brightness button

jOFF/ON timer operation buttons

kWeekly timer operation buttons

lFlash Streamer (air cleaning) operation button

mEcono and Outdoor unit quiet operation button

nMode button

oPowerful button

pFan button

User reference guide	ATXM20~35R2V1B + ATXM50R2V1B + ATXM20~35R5V1B
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Daikin ATXM20R2V1B, ATXM20R5V1B, ATXM25R2V1B, ATXM25R5V1B, ATXM35R2V1B User reference guide

4 | About the system

4.2.2 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

Airflow rate = Low

Comfort operation is active

Intelligent eye is active

Automatic vertical swing is active

Automatic horizontal swing is active

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4 | About the system

Icon	Description

Flash Streamer (air cleaning) is active

ON timer is active

OFF timer is active

Weekly timer is active

Day of the week

Current time

4.2.3 To operate the user interface

aSignal receiver

1Aim 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.

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5 | Before operation

5 Before operation

5.1 Overview: Before operation

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.

5.2To insert the batteries

The batteries will last for about 1 year.

1Remove the front cover.

2Insert both batteries at once.

3Put back the front cover.

3 1

AAA.LR03

INFORMATION

▪ Low energy of battery is indicated by flashing of LCD display.

▪ ALWAYS replace both batteries at once.

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5 | Before operation

5.3 To mount the user interface holder

2×

a b c

aUser interface

bScrews (field supply)

cUser interface holder

1Choose a place where the signals reach the unit.

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

3Hang the user interface on the user interface holder.

5.4About 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.