Daikin FBA35A2VEB, FBA50A2VEB, FBA60A2VEB, FBA71A2VEB, FBA100A2VEB User reference guide

User reference guide

Split system air conditioners

FBA35A2VEB
FBA50A2VEB
FBA60A2VEB
FBA71A2VEB
FBA100A2VEB
FBA125A2VEB
FBA140A2VEB

FBA35A2VEB9
FBA50A2VEB9
FBA60A2VEB9
FBA71A2VEB9

User reference guide

Split system air conditioners

English

Table of Contents

Table of Contents

1 General safety precautions 2

1.1 About the documentation .......................................................... 2

1.1.1 Meaning of warnings and symbols.............................. 2

1.2 For the user ............................................................................... 2

2 About this document 3

2.1 User reference guide at a glance .............................................. 3

3 About the system 3

3.1 Components .............................................................................. 3

3.2 Information requirements for fan coil units ................................ 4

3.3 User interface ............................................................................ 4

4 Before operation 4

5 Operation 4

5.1 Operation range ........................................................................ 4

5.2 Operation procedure ................................................................. 5

6 Energy saving and optimum operation 5

7 Maintenance and service 6

7.1 Overview: Maintenance and service ......................................... 6

7.2 To clean the drain pan............................................................... 6

7.3 To handle the drain pipe plug.................................................... 7

7.4 Cleaning the air filter, suction grille, air outlet and outside

panels ....................................................................................... 7

7.4.1 To clean the air outlet and outside panels .................. 7

7.4.2 To clean the air filter ................................................... 7

7.5 Maintenance before a long stop period ..................................... 7

7.6 Maintenance after a long stop period ........................................ 8

8 Troubleshooting 8

8.1 Symptoms that are NOT system malfunctions .......................... 8

8.1.1 Symptom: The system does not operate .................... 8

8.1.2 Symptom: White mist comes out of a unit (Indoor

unit) ............................................................................. 9

8.1.3 Symptom: Dust comes out of the unit......................... 9

8.1.4 Symptom: The units can give off odours..................... 9

8.1.5 Symptom: The operation stopped suddenly

(Operation lamp is on) ................................................ 9

8.1.6 Symptom: The outdoor fan rotates while the air

conditioner is not in operation ..................................... 9

8.1.7 Symptom: The heating operation stops suddenly and

a flowing sound is heard ............................................. 9

9 Disposal 9

10 Glossary 9

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 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.

NOTICE

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

INFORMATION

Indicates useful tips or additional information.

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.

1.2 For the user

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

▪ This appliance can be used by children aged from 8 years and

above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in
a safe way and understand the hazards involved. Children shall
NOT play with the appliance. Cleaning and user maintenance
shall NOT be made by children without supervision.

WARNING

To prevent electric 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.

NOTICE

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

unit.

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

User reference guide

2

FBA35~140A2VEB+FBA35~71A2VEB9

Split system air conditioners

4P543324-2 – 2018.08

2 About this document

▪ 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.

2 About this document

Thank you for purchasing this product. Please:

▪ Read the documentation carefully before operating the user

interface to ensure the best possible performance.

▪ 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.

2.1 User reference guide at a glance

Chapter Description

General safety precautions Safety instructions that you MUST

read before operation

About the documentation What documentation exists for the

user

About the system ▪ Components

▪ User interface

Before operation What to do before starting operation

Operation How to operate the system

Energy saving and optimum
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

How to save energy

3 About the system

INFORMATION

The sound pressure level is less than 70dBA.

WARNING: FLAMMABLE MATERIAL

The R32 refrigerant (if applicable) in this unit is mildly
flammable. Refer to the outdoor unit specifications for the
type of refrigerant to be used.

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 and non-toxic. R410A is a non-combustible
refrigerant, and R32 is a mildly flammable refrigerant,
but they will generate a toxic gas when they
accidentally leak 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.

NOTICE

Improper installation or attachment of equipment or
accessories could result in electric shock, short-circuit,
leaks, fire or other damage to the equipment. Only use
accessories, optional equipment and spare parts made or
approved by Daikin.

3.1 Components

INFORMATION

The following illustration is an example and might NOT
match your system layout.

FBA35~140A2VEB+FBA35~71A2VEB9
Split system air conditioners
4P543324-2 – 2018.08

User reference guide

3

4 Before operation

b

f

a

h

c

d

e

g

a Indoor unit
b Outdoor unit
c User interface
d Air inlet
e Air outlet

f Refrigerant piping and electric wiring
g Drain pipe
h Earth wire to ground outdoor unit to prevent electric

shocks.

CAUTION

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

CAUTION

▪ NEVER touch the internal parts of the controller.

▪ Do NOT remove the front panel. Some parts inside are

dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.

NOTICE

Do NOT wipe the controller operation panel with benzine,
thinner, chemical dust cloth, etc. The panel may get
discoloured or the coating peeled off. If it is heavily dirty,
soak a cloth in water-diluted neutral detergent, squeeze it
well and wipe the panel clean. Wipe it with another dry
cloth.

A B C D E

FBA125A 7.83 4.27 13.50 0.35 62

FBA140A 8.68 4.72 15.50 0.35 62

3.3 User interface

CAUTION

▪ NEVER touch the internal parts of the controller.

▪ Do NOT remove the front panel. Some parts inside are

dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.

This operation manual will give a non-exhaustive overview of the
main functions of the system.

For more information about the user interface, see the operation
manual of the installed user interface.

4 Before operation

WARNING

This unit contains electrical and hot parts.

WARNING

Before operating the unit, be sure the installation has been
carried out correctly by an installer.

CAUTION

It is not good for your health to expose your body to the air
flow for a long time.

CAUTION

To avoid oxygen deficiency, ventilate the room sufficiently
if equipment with burner is used together with the system.

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.

NOTICE

NEVER press the button of the user interface with a hard,
pointed object. The user interface may be damaged.

NOTICE

NEVER pull or twist the electric wire of the user interface. It
may cause the unit to malfunction.

3.2 Information requirements for fan

NOTICE

Be sure to turn on the power 6 hours before operation in
order to have power running to the crankcase heater and
to protect the compressor.

5 Operation

5.1 Operation range

coil units

Use the system in the following temperature and humidity ranges for

Item Symbol Value Unit

Cooling capacity (sensible) P

Cooling capacity (latent) P

Heating capacity P

Total electric power input P

Sound power level (per speed
setting, if applicable)

Contact details:

DAIKIN INDUSTRIES CZECH REPUBLIC s.r.o. U Nové Hospody
1/1155, 301 00 Plzeň Skvrňany, Czech Republic

User reference guide

L

rated,c

rated,c

rated,h

elec

WA

A kW

B kW

C kW

D kW

E dB

4

safe and effective operation.

For combination with R410A outdoor unit, refer to the following table:

Outdoor units Cooling Heating

RR71~125 –15~46°CDB —

18~37°CDB

12~28°CWB

FBA35~140A2VEB+FBA35~71A2VEB9

Split system air conditioners

4P543324-2 – 2018.08

—

6 Energy saving and optimum operation

Outdoor units Cooling Heating

RQ71~125 –5~46°CDB –9~21°CDB

–10~15°CWB

18~37°CDB

12~28°CWB

RXS35~60 –10~46°CDB –15~24°CDB

18~32°CDB 10~30°CDB

3MXS40~68

4MXS68~80

5MXS90

RZQG71~140 –15~50°CDB –19~21°CDB

RZQSG71~140 –15~46°CDB –14~21°CDB

RZQ200~250 –5~46°CDB –14~21°CDB

Indoor humidity ≤80%

For combination with R32 outdoor unit, refer to the following table:

–10~46°CDB –15~24°CDB

18~32°CDB 10~30°CDB

18~37°CDB

12~28°CWB

20~37°CDB

14~28°CWB

20~37°CDB

14~28°CWB

10~27°CDB

–16~18°CWB

–16~18°CWB

–20~15.5°CWB

10~27°CDB

–15~15.5°CWB

10~27°CDB

–15~15°CWB

10~27°CDB

(a)

Symbol Explanation

Outdoor temperature

Indoor temperature

(a) To avoid condensation and water dripping out of the unit. If

the temperature or the humidity is beyond these conditions,
safety devices may be put in action and the air conditioner
may not operate.

Setting temperature range of the user interface:

Cooling Heating

17~32°C 16~31°C

5.2 Operation procedure

▪ Turn on the power at least 6 hours before operating the unit in

order to ensure smoother operation. As soon as the power is
turned on, the user interface display appears.

▪ If there was a power failure during operation, the system

automatically restarts immediately after the power supply is
recovered.

▪ The setting temperature range of the user interface is described in

chapter "Operation range".

▪ If you select a function which is not available, the message

appears on the user interface.

▪ The operation procedure depends on the model (heat pump or

cooling only). Contact your dealer to confirm which model you are
using.

▪ Read the documentation carefully before operating the user

interface to ensure the best possible performance.

Outdoor units Cooling Heating

RXM35~60 –10~46°CDB –15~24°CDB

–16~18°CWB

18~32°CDB 10~30°CDB

3MXM40~68

4MXM68~80

5MXM90

RZAG35~60 –20~52°CDB –20~24°CDB

RZAG71~140 –20~52°CDB –19.5~21°CDB

RZASG71~140 –15~46°CDB –14~21°CDB

AZAS71~140 –15~46°CDB –14~21°CDB

Indoor humidity ≤80%

–10~46°CDB –15~24°CDB

–16~18°CWB

18~32°CDB 10~30°CDB

–21~18°CWB

18~32°CDB 10~30°CDB

–20~15.5°CWB

18~37°CDB

12~28°CWB

20~37°CDB

14~28°CWB

20~37°CDB

14~28°CWB

10~27°CDB

–15~15.5°CWB

10~27°CDB

–15~15.5°CWB

10~27°CDB

(a)

6 Energy saving and optimum

operation

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.

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.

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.

WARNING

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

Observe the following precautions to ensure the system operates
properly.

FBA35~140A2VEB+FBA35~71A2VEB9
Split system air conditioners
4P543324-2 – 2018.08

User reference guide

5

7 Maintenance and service

▪ Prevent direct sunlight from entering a room during cooling

operation by using curtains or blinds.

▪ 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.

▪ When the display shows (time to clean the air filter), clean the

filters (see "7.4.2To clean the air filter"on page7).

▪ 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.)

▪ Avoid direct air flow to room inhabitants.

WARNING

R410A is a non-combustible refrigerant, and R32 is a
mildly flammable refrigerant; they normally don’t leak. If the
refrigerant leaks in the room and comes into contact with
fire from a burner, a heater, or a cooker, this may result in
a fire (in case of R32), or the formation of a harmful gas.

Turn off any combustible heating devices, ventilate the
room, and contact the dealer from 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.

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.

CAUTION

Before accessing terminal devices, make sure to interrupt
all power supply.

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

Refrigerant type: R410A

Global warming potential (GWP) value: 2087.5

NOTICE

In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes CO
equivalent) is used to determine the maintenance intervals.
Follow the applicable legislation.

Formula to calculate the greenhouse gas emissions:

GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000

Please contact your installer for more information.

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.

WARNING

To prevent electric 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.

2

NOTICE

When cleaning the heat exchanger, make sure to remove
the switch box and fan motor. Water or detergent might
deteriorate the insulation of electronic components and
result in burnout of these components.

WARNING

Be careful with ladders when working in high places.

User reference guide

6

7.2 To clean the drain pan

Clean the drain pan so that it does NOT become clogged and dusty.

FBA35~140A2VEB+FBA35~71A2VEB9

Split system air conditioners

4P543324-2 – 2018.08

7 Maintenance and service

a

a

b

7.3 To handle the drain pipe plug

NOTICE

▪ Do NOT remove the drain pipe plug. Water might leak

out.

▪ Use the drain outlet only to discharge the water if the

drain pump is not used or before maintenance.

▪ Insert and remove the drain plug gently. Excessive

force may deform the drain socket of the drain pan.

1 Pull out the plug.

▪ Do NOT wiggle the plug up and down.

2 Push in the plug.

▪ Set the plug and push it in using a Phillips screwdriver.

1 Remove the air filters by pulling their cloth upward (in case of

rear suction) or backward (in case of bottom suction).

rear suction bottom suction

2 Clean the air filter. Use a vacuum cleaner or wash with water. If

the air filter is very dirty, use a soft brush and neutral detergent.

3 Dry the air filter in the shadow.

4 Reattach the air filter. Align the 2 hanger brackets and push the

2 clips in their place and pull the cloth if necessary.

a Drain plug
b Phillips screwdriver

7.4 Cleaning the air filter, suction grille, air outlet and outside panels

7.4.1 To clean the air outlet and outside panels

WARNING

Do NOT let the indoor unit get wet. Possible
consequence: Electric shock or fire.

NOTICE

▪ Do NOT use gasoline, benzene, thinner polishing

powder or liquid insecticide. Possible consequence:
Discoloration and deformation.

▪ Do NOT use water or air of 50°C or higher. Possible

consequence: Discoloration and deformation.

▪ Do NOT scrub firmly when washing the blade with

water. Possible consequence: The surface sealing
peels off.

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

7.4.2 To clean the air filter

When to clean the air filter:

▪ Rule of thumb: Clean every 6 months. If the air in the room is

extremely contaminated, increase the cleaning frequency.

▪ Depending on the settings, the user interface can display the

TIME TO CLEAN AIR FILTER notification. Clean the air filter
when the notification is displayed.

▪ If the dirt becomes impossible to clean, change the air filter

(=optional equipment).

How to clean the air filter:

FBA35~140A2VEB+FBA35~71A2VEB9
Split system air conditioners
4P543324-2 – 2018.08

rear suction bottom suction

5 Confirm that 4 hangers are fixed.

6 In case of bottom suction, close the air inlet grille.

7 Turn ON the power.

8 Press the FILTER SIGN RESET button.

Result: The TIME TO CLEAN AIR FILTER notification disappears

from the user interface.

7.5 Maintenance before a long stop period

E.g., at the end of the season.

▪ Let the indoor units run in fan only operation for about half a day in

order to dry the interior of the units.

▪ Turn off the power. The user interface display disappears. When

the main power is turned on, the air conditioner will use some
power, even if it is not operating.

▪ Clean air filters and casings of indoor units. Contact your installer

or maintenance person to clean air filters and casings of the
indoor unit. Maintenance tips and procedures for cleaning are
provided in the installation/operation manuals of dedicated indoor
units. Make sure to install cleaned air filters back in the same
position.

User reference guide

7

8 Troubleshooting

7.6 Maintenance after a long stop period

E.g., at the beginning of the season.

▪ Check and remove everything that might be blocking inlet and

outlet vents of indoor units and outdoor units.

▪ Check if the earth is connected properly.

▪ Check if there is somewhere a broken wire. Contact your dealer in

case of problems.

▪ Clean air filters and casings of indoor units. Contact your installer

or maintenance person to clean air filters and casings of the
indoor unit. Maintenance tips and procedures for cleaning are
provided in the installation/operation manuals of dedicated indoor
units. Make sure to install cleaned air filters back in the same
position.

▪ Turn on the power at least 6 hours before operating the unit in

order to ensure smoother operation. As soon as the power is
turned on, the user interface display appears.

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.

Malfunction Measure

If a safety device such as a fuse, a
breaker or an earth leakage breaker
frequently actuates or the ON/OFF
switch does NOT properly work.

If water leaks from the unit. Stop the operation.

The operation switch does NOT work
well.

If the user interface display indicates the
unit number, the operation lamp flashes
and the malfunction code appears.

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

Turn OFF the main power
switch.

Turn OFF the power
supply.

Notify your installer and
report the malfunction
code.

Malfunction Measure

The system operates
but cooling or heating
is insufficient.

Operation stops
suddenly. (Operation
lamp blinks.)

An abnormal function
happens during
operation.

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).

▪ Check if air inlet or outlet of outdoor or

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

▪ Check if the air filter is clogged. Contact

your dealer to clean the air filter (refer to
"Maintenance" in the indoor unit manual).

▪ Check the temperature setting. Refer to

the manual of the user interface.

▪ Check if the fan speed setting is set to

low speed. Refer to the manual of the
user interface.

▪ Check if the air flow angle is proper.

Refer to the manual of the user interface.

▪ Check for open doors or windows. Close

doors and windows to prevent wind from
coming in.

▪ Check if direct sunlight enters the room.

Use curtains or blinds.

▪ Check if there are too many occupants in

the room during cooling operation. Check
if the heat source of the room is
excessive.

▪ If the heat source of the room is

excessive (when cooling). Cooling effect
decreases if heat gain of the room is too
large.

▪ Check if the air filter is clogged. Contact

your dealer to clean the air filter (refer to
"Maintenance" in the indoor unit manual).

▪ Check if air inlet or outlet of outdoor or

indoor unit is not blocked by obstacles.
Remove any obstacles, turn the breaker
OFF and back ON. If the lamp still blinks,
contact your dealer.

▪ Check if all indoor units connected to

outdoor unit in the multi-system are
operating in the same mode.

▪ The air conditioner may malfunction

because of lightning or radio waves. Turn
the breaker OFF and back ON.

Malfunction Measure

If the system does not
operate at all.

The system stops
immediately after
starting operation.

User reference guide

▪ 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 if air inlet or outlet of outdoor or

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

▪ Check if the air filter is clogged. Contact

your dealer to clean the air filter.

8

8.1 Symptoms that are NOT system malfunctions

The following symptoms are NOT system malfunctions:

8.1.1 Symptom: The system does not operate

▪ The air conditioner does not start immediately after the ON/OFF

button on the user interface is pressed. If the operation lamp
lights, the air conditioner is in normal condition. It does not restart
immediately because one of its safety devices actuates to prevent
the air conditioner from being overloaded. The air conditioner will
turn on again automatically after 3minutes.

▪ The air conditioner does not start immediately after the power

supply is turned on. Wait 1 minute until the microcomputer is
prepared for operation.

FBA35~140A2VEB+FBA35~71A2VEB9

Split system air conditioners

4P543324-2 – 2018.08

9 Disposal

▪ The air conditioner does not restart immediately when the

temperature setting button is returned to its former position after
pushing. It does not restart immediately because one of its safety
devices actuates to prevent the air conditioner from being
overloaded. The air conditioner will turn on again automatically
after 3minutes.

▪ The outdoor unit has stopped. This is because the room

temperature has reached the set temperature. The unit switches

to fan operation. " " (external control icon) is displayed on
the user interface and the actual operation is different from the
user interface setting. For multi-split models, the microcomputer
executes the following control depending on the operation mode
of other indoor units.

▪ The fan speed is different from the setting. Pressing the fan speed

control button does not change the fan speed. When the room
temperature reaches the set temperature in heating mode or the
unit’s maximum capacity is reached, the outdoor unit will stop
operation and the indoor unit will operate in fan only mode (low
fan speed). In case of multi-split, the indoor unit alternately
operates in fan stop mode and fan only mode (LL= low fan
speed). This is to prevent the cool air from being blown directly
onto anyone present in the room.

8.1.2 Symptom: White mist comes out of a unit (Indoor unit)

▪ When humidity is high during cooling operation (in oily and dusty

places). If the interior of an indoor unit is extremely contaminated,
the temperature distribution inside a room becomes uneven. It is
necessary to clean the interior of the indoor unit. Ask your dealer
for details on cleaning the unit. This operation requires a qualified
service person.

▪ When the air conditioner is changed over to heating operation

after defrost operation. Moisture generated by defrost becomes
steam and exits.

8.1.3 Symptom: Dust comes out of the unit

When the unit is used for the first time in a long time. This is
because dust has gotten into the unit.

8.1.4 Symptom: The units can give off odours

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

8.1.5 Symptom: The operation stopped suddenly (Operation lamp is on)

The air conditioner may stop for system protection due to large
voltage fluctuation. It automatically resumes operation after about 3
minutes.

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

▪ 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.

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.

10 Glossary

DHW = Domestic hot water

Hot water used, in any type of building, for domestic
purposes.

LWT = Leaving water temperature

Water temperature at the water outlet of the heatpump.

Dealer

Sales distributor for the product.

Authorized installer

Technical skilled person who is qualified to install the
product.

User

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

Applicable legislation

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

Service company

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

Installation manual

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.

8.1.7 Symptom: The heating operation stops suddenly and a flowing sound is heard

The system is removing frost on the outdoor unit. You should wait for
about 3 to 8minutes.

FBA35~140A2VEB+FBA35~71A2VEB9
Split system air conditioners
4P543324-2 – 2018.08

User reference guide

9

4P543324-2 2018.08

Copyright 2018 Daikin