Operation manual
Split system air conditioners
FBA35A2VEB
FBA50A2VEB
FBA60A2VEB
FBA71A2VEB
FBA100A2VEB
FBA125A2VEB
FBA140A2VEB
Operation manual
Split system air conditioners
English
Table of Contents
b
f
a
h
c
d
e
g
Table of Contents
1 About this document 2
2 About the system 2
2.1 Components .............................................................................. 2
2.2 Information requirements for fan coil units ................................ 3
3 Operation 3
3.1 Operation range ........................................................................ 3
3.2 Operation procedure ................................................................. 4
4 Energy saving and optimum operation 4
5 Maintenance and service 4
5.1 Overview: Maintenance and service ......................................... 4
5.2 To handle the drain pipe plug.................................................... 5
5.3 Cleaning the air filter, suction grille, air outlet and outside
panels ....................................................................................... 5
5.3.1 To clean the air outlet and outside panels .................. 5
5.3.2 To clean the air filter ................................................... 5
5.4 Maintenance before a long stop period ..................................... 6
5.5 Maintenance after a long stop period ........................................ 6
6 Troubleshooting 6
6.1 Symptoms that are NOT system malfunctions .......................... 6
6.1.1 Symptom: The system does not operate .................... 6
6.1.2 Symptom: Air blow direction is not as specified.......... 7
6.1.3 Symptom: White mist comes out of a unit (Indoor
unit) ............................................................................. 7
6.1.4 Symptom: Noise of air conditioners (indoor unit) ........ 7
6.1.5 Symptom: Dust comes out of the unit......................... 7
6.1.6 Symptom: The units can give off odours..................... 7
6.1.7 Symptom: The display shows "88".............................. 7
7 Disposal 7
2 About the system
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.
INFORMATION
The sound pressure level is less than 70dBA.
WARNING: FLAMMABLE MATERIAL
The R32 refrigerant (if applicable) in this unit is mildly
flammable.
WARNING
▪ Do not modify, disassemble, remove, reinstall or repair
▪ In case of accidental refrigerant leaks, make sure there
WARNING
Ask your dealer to install and reinstall the air conditioner.
Incomplete installation may result in a water leakage,
electric shock, and fire.
(a)
(a) Refer to the outdoor unit specifications for the type of
refrigerant to be used.
the unit yourself as incorrect dismantling or installation
may cause an electric shock or fire. Contact your
dealer.
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
1 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
Endusers
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:
▪ Operation instructions
▪ Format: Paper (in the box of the indoor unit)
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.
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.
2.1 Components
INFORMATION
The following illustration is an example and might NOT
match your system layout.
a Indoor unit
b Outdoor unit
Operation manual
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FBA35~140A2VEB
Split system air conditioners
4P456964-1 – 2017.04
3 Operation
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.
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.
2.2 Information requirements for fan coil units
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
L
rated,c
rated,c
rated,h
elec
WA
A kW
B kW
C kW
D kW
E dB
setting, if applicable)
Contact details:
DAIKIN INDUSTRIES CZECH REPUBLIC s.r.o. U Nové Hospody
1/1155, 301 00 Plzeň Skvrňany, Czech Republic
A B C D E
FBA125A 9.06 4.94 13.50 0.23 62
FBA140A 9.98 5.42 15.50 0.23 62
3 Operation
3.1 Operation range
Use the system in the following temperature and humidity ranges for
safe and effective operation.
For combination with R410A outdoor unit, refer to the following table:
Outdoor units Cooling Heating
RR71~125 Outdoor
–15~46°CDB —
temperature
Indoor
temperature
RQ71~125 Outdoor
temperature
Indoor
temperature
RXS35~60 Outdoor
temperature
Indoor
18~37°CDB
—
12~28°CWB
–5~46°CDB –9~21°CDB
–10~15°CWB
18~37°CDB
10~27°CDB
12~28°CWB
–10~46°CDB –15~24°CDB
–16~18°CWB
18~32°CDB 10~30°CDB
temperature
3MXS40~68
4MXS68~80
5MXS90
Outdoor
temperature
Indoor
–10~46°CDB –15~24°CDB
–16~18°CWB
18~32°CDB 10~30°CDB
temperature
RZQG71~140 Outdoor
temperature
Indoor
temperature
RZQSG71~140 Outdoor
temperature
Indoor
temperature
RZQ200~250 Outdoor
temperature
Indoor
temperature
Indoor humidity ≤80%
–15~50°CDB –19~21°CDB
–20~15.5°CWB
18~37°CDB
10~27°CDB
12~28°CWB
–15~46°CDB –14~21°CDB
–15~15.5°CWB
20~37°CDB
10~27°CDB
14~28°CWB
–5~46°CDB –14~21°CDB
–15~15°CWB
20~37°CDB
10~27°CDB
14~28°CWB
(a)
For combination with R32 outdoor unit, refer to the following table:
Outdoor units Cooling Heating
RXM35~60 Outdoor
temperature
Indoor
–10~46°CDB –15~24°CDB
–16~18°CWB
18~32°CDB 10~30°CDB
temperature
3MXM40~68
4MXM68~80
5MXM90
Outdoor
temperature
Indoor
–10~46°CDB –15~24°CDB
–16~18°CWB
18~32°CDB 10~30°CDB
temperature
RZAG71~140 Outdoor
temperature
Indoor
temperature
RZASG71~140 Outdoor
temperature
Indoor
temperature
AZAS71~140 Outdoor
temperature
Indoor
temperature
Indoor humidity ≤80%
–20~52°CDB –19.5~21°CDB
–20~15.5°CWB
18~37°CDB
10~27°CDB
12~28°CWB
–15~46°CDB –14~21°CDB
–15~15.5°CWB
20~37°CDB
10~27°CDB
14~28°CWB
–15~46°CDB –14~21°CDB
–15~15.5°CWB
20~37°CDB
10~27°CDB
14~28°CWB
(a)
FBA35~140A2VEB
Split system air conditioners
4P456964-1 – 2017.04
Operation manual
3
4 Energy saving and optimum operation
(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
3.2 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 NOT
AVAILABLE 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.
▪ 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. It
may cause deterioration in the effect or stop the operation.
▪ Turn off the main power supply switch to the unit when the unit is
not used for longer periods of time. If the switch is on, it consumes
electricity. Before restarting the unit, turn on the main power
supply switch 6 hours before operation to ensure smooth running.
▪ 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.
5 Maintenance and service
4 Energy saving and optimum
operation
CAUTION
Never expose little children, plants or animals directly to
the air flow.
WARNING
Do NOT place objects below the indoor and/or outdoor unit
that may get wet. In this condition, condensation on the
main unit or refrigerant pipes, air filter dirt or drain blockage
may cause dripping. This results in fouling or failure of the
object which is located beneath the unit.
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 fumigationtype insecticide. This could cause the chemicals to
become deposited in the unit, which could endanger the
health of those 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.
▪ Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
▪ Ventilate often. Extended use requires special attention to
ventilation.
5.1 Overview: Maintenance and service
The installer has to perform a yearly maintenance.
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
CO2-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.
NOTICE
Maintenance must be done by an authorised installer or
service agent.
We recommend to do 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.
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.
Operation manual
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FBA35~140A2VEB
Split system air conditioners
4P456964-1 – 2017.04
5 Maintenance and service
a
a
b
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.
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 carefull with ladders when working in high places.
5.2 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.
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.
5.3.2 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:
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 Push in the plug.
▪ Set the plug and push it in using a Phillips screwdriver.
a Drain plug
b Phillips screwdriver
5.3 Cleaning the air filter, suction grille, air outlet and outside panels
5.3.1 To clean the air outlet and outside panels
WARNING
Do NOT let the indoor unit get wet. Possible
consequence: Electric shock or fire.
FBA35~140A2VEB
Split system air conditioners
4P456964-1 – 2017.04
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.
rear suction bottom suction
5 Confirm that 4 hangers are fixed.
6 In case of bottom suction, close the air inlet grille.
Operation manual
5
6 Troubleshooting
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.
5.4 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.
5.5 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.
6 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:
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.
Malfunction Measure
If the system does not
operate at all.
The system stops
immediately after
starting operation.
The system operates
but cooling or heating
is insufficient.
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 there is no power failure. Wait
until power is restored. If 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.
▪ 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.
6.1 Symptoms that are NOT system malfunctions
The following symptoms are NOT system malfunctions:
6.1.1 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 3minutes.
▪ The air conditioner does not start immediately after the power
supply is turned on. Wait 1 minute until the microcomputer is
prepared for operation.
Operation manual
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FBA35~140A2VEB
Split system air conditioners
4P456964-1 – 2017.04
7 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 3minutes.
▪ 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.
6.1.2 Symptom: Air blow direction is not as specified
Actual air blow direction is not as shown on the user interface.
Automatic swing setting does not work.
Refer to the manual of the user interface.
6.1.7 Symptom: The display shows "88"
This is the case immediately after the main power supply switch is
turned on and means that the user interface is in normal condition.
This continues for 1minute.
7 Disposal
Dismantling of the unit, and treatment of the refrigerant, oil and other
parts must comply with the applicable legislation.
6.1.3 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.
6.1.4 Symptom: Noise of air conditioners (indoor unit)
▪ A "ringing" sound is heard after the unit is started. This sound is
generated by the temperature regulator working. It will quiet down
after about a minute.
▪ A continuous low "hissing" sound is heard when the system is in
cooling or defrost operation. This is the sound of refrigerant gas
flowing through both indoor and outdoor units.
▪ A hissing sound which is heard at the start or immediately after
stopping operation or defrost operation. This is the noise of
refrigerant caused by flow stop or flow change.
▪ A "squeaking" sound is heard when the system is in operation or
after the stop of operation. Expansion and contraction of plastic
parts caused by temperature change makes this noise.
6.1.5 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.
6.1.6 Symptom: The units can give off odours
The unit can absorb the smell of rooms, furniture, cigarettes, etc.,
and then emit it again.
FBA35~140A2VEB
Split system air conditioners
4P456964-1 – 2017.04
Operation manual
7
4P456964-1 2017.04
Copyright 2017 Daikin
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