Page 1
SPLIT SYSTEM Air Conditioners
MODELS
Ceiling mounted cassette type (Round flow model)
FCQ18PAVJU
FCQ24PAVJU
FCQ30PAVJU
FCQ36PAVJU
FCQ42PAVJU
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.
OPERATION MANUAL
English
Français
Español
Lire soigneusement ces instructions avant l’installation.
Conserver ce manuel à portée de main pour référence ultérieure.
Ce manuel doit être donné au propriétaire de l’équipement.
Lea cuidadosamente estas instrucciones antes de instalar.
Guarde este manual en un lugar a mano para leer en caso de tener alguna duda.
Este manual debe permanecer con el propietario del equipo.
Page 2
k
j
RZQ36 · 42
RZR36 · 42
i
a
d
l
m
e
f
e
c
g
p
RZQ18 · 24 · 30
RZR18 · 24 · 30
h
d
e
b
n
[1]
Page 3
CONTENTS
ILLUSTRATION....................................................[1]
1. WHAT TO DO BEFORE OPERATION...........1
2. SAFETY CONSIDERATIONS ........................2
3. OPERATION RANGE.....................................4
4. INSTALLATION SITE .....................................4
5. OPERATION PROCEDURE ..........................4
6. OPTIMUM OPERATION ................................4
7. MAINTENANCE
(FOR SERVICE PERSONNEL)......................5
8. NOT MALFUNCTION OF THE AIR
CONDITIONER ..............................................7
9. TROUBLE SHOOTING ..................................7
PRECAUTIONS FOR GROUP CONTROL
SYSTEM OR TWO REMOTE CONTROLLERS
CONTROL SYSTEM
This system provides two other control systems beside individual control (one remote controller controls one indoor unit) system. Confirm the following if your unit is of the following control
system type.
• Group control system
One remote controller controls up to 16 indoor units.
All indoor units are equally set.
• Two remote controllers control system
Two remote controllers control one indoor unit (In case of
group control system, one group of indoor units)
The unit is individually operated.
NOTE
• Contact your Daikin dealer in case of changing the combina-
tion or setting of group control and two remote controllers
control system.
1. WHAT TO DO BEFORE
OPERATION
This operation manual is for the following system with standard
control. Before initiating operation, contact your Daikin dealer
for the operation that corresponds to your system.
Indoor unit
Outdoor unit
Unit with
remote
controller
NOTE
If your installation has a customized control system, ask your
Daikin dealer for the operation that corresponds to your system.
• Heat pump type
This system provides cooling, heating, automatic, program
dry and fan operation modes.
• Cooling only type
This system provides cooling, program dry and fan operation
modes.
Names and functions of parts
Refer to figure on page [1]
a Indoor unit
b Outdoor unit
Remote controller
c
Depending on the system configuration, the remote controller is not provided.
d Inlet air
e Discharge air
f Air outlet
g Airflow flap (at air outlet)
h Refrigerant piping
i Drain pipe
Model name (model name plate)
j
(Inside of suction grille)
Drain pumping out device(built-in)
k
Condensate removed from the room during cooling.
l Air filter (suction grille)
m Suction grille
Ground wire
n
Wire to ground from the indoor and outdoor units to prevent electric shock.
p Transmission wire
English 1
Page 4
2. SAFTY CONSIDERATIONS
Read these “Safety Considerations for Operations” carefully
before installing air conditioning equipment. After completing
the installation, make sure that the unit operates properly during
the startup operation. Instruct the customer on how to operate
and maintain the unit.
Inform customers that they should store this Operation Manual
with the Installation Manual for future reference.
Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols:
DANGER........... Indicates an imminently hazardous situa-
tion which, if not avoided, will result in
death or serious injury.
WAR NING ......... Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
CAUTION.......... Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury. It may also be used to
alert against unsafe practices.
NOTE ................ Indicates situations that may result in
equipment or property-damage accidents
only.
DANGER
• Do not install the unit in an area where flammable materials are present due to risk of explosion resulting in
serious injury or death.
• Any abnormalities in the operation of the air conditioner
such as smoke or fire could result in severe injury or
death. Turn off the power and contact your dealer immediately.
• Refrigerant gas may produce toxic gas if it comes in contact with fire, such as from a fan, heater, stove, or cooking device. Exposure to this gas could cause severe
injury or death.
• For refrigerant leakage, consult your dealer.
Refrigerant gas is heavier than air and replaces oxygen.
A massive leak could lead to oxygen depletion, especially in basements, and an asphyxiation hazard could
occur leading to serious injury or death.
• If equipment utilizing a burner is used in the same room
as the air conditioner, there is the danger of oxygen deficiency which could lead to an asphyxiation hazard
resulting in serious injury or death. Be sure to ventilate
the room sufficiently to avoid this hazard.
• Safely dispose of the packing materials. Packing materials, such as nails and other metal or wooden parts, may
cause stabs or other injuries.
• Tear apart and throw away plastic packaging bags so
that children will not play with them.
Children playing with plastic bags face the danger of
death by suffocation.
WAR NING
• Contact your dealer for repair and maintenance.
Improper repair and maintenance may result in water
leakage, electric shock, and fire. Only use accessories
made by Daikin that are specifically designed for use with
the equipment and have them installed by a professional.
• Contact your dealer to move and reinstall the air conditioner. Incomplete installation may result in water leakage, electric shock, and fire.
• Never let the indoor unit or the remote controller get wet.
Water can cause an electric shock or a fire.
• Never use flammable spray such as hair spray, lacquer,
or paint near the unit. Flammable spray may cause a fire.
• When a fuse blows out, never replace it with one of
incorrect ampere ratings or different wires. Always
replace any blown fuse with a fuse of the same specification.
• Never remove the fan guard of the unit. A fan rotating at
high speed without the fan guard is very dangerous.
• Never inspect or service the unit by yourself. Contact a
qualified service person to perform this work.
• Turn off all electrical power before doing any maintenance to avoid the risk of serious electric shock; never
sprinkle or spill water or liquids on the unit.
• Do not touch the switch with wet fingers.
Touching a switch with wet fingers can cause electric
shock.
• Do not allow children to play on or around the unit to prevent injury.
• The heat exchanger fins are sharp enough to cut. To
avoid injury wear gloves or cover the fins while working
around them.
• Do not put a finger or other objects into the air inlet or air
outlet. The fan is rotating at high speed and will cause
injury.
• Check the unit foundation for damage on a continuous
basis, especially if it has been in use for a long time. If
left in a damaged condition the unit may fall and cause
injury.
• Placing a flower vase or other containers with water or
other liquids on the unit could cause a shock or fire if a
spill occurs.
• Do not touch the air outlet or horizontal blades while the
swing flap is in operation because fingers could get
caught and injured.
• Never touch the internal parts of the controller. Do not
remove the front panel because some parts inside are
dangerous to touch. To check and adjust internal parts,
contact your dealer.
• Be sure to establish a ground.
Do not ground the unit to an utility pipe, arrester, or telephone ground. Incomplete grounding may cause electrical shock, or fire. A high surge current from lightning or
other sources may cause damage to the air conditioner.
• Be sure to install a ground fault circuit interrupter.
Failure to install a ground fault circuit interrupter may
result in electric shocks, or fire.
2 English
Page 5
CAUTION
• Do not use the air conditioner for any other purposes
other than comfort cooling or heating. Do not use the
unit for cooling precision instruments, food, plants, animals or works of art.
• Do not place items under the indoor unit as they may be
damaged by condensates that may form if the humidity
is above 80% or if the drain outlet gets blocked.
• Before cleaning, stop the operation of the unit by turning
the power off or by pulling the supply cord out from its
receptacle. Otherwise, an electric shock and injury may
result.
• Do not wash the air conditioner with excessive water. An
electric shock or fire may result.
• Avoid placing the controller in a spot splashed with
water. Water entering the controller may cause an electric shock or damage the internal electronic parts.
• Do not operate the air conditioner when using a room
fumigation type of insecticide. Failure to observe this
could cause the chemicals to be deposited in the unit
and can endanger the health of those who are hypersensitive to chemicals.
• Do not turn off the power immediately after stopping
operation. Always wait for at least five minutes before
turning off the power. Otherwise, water leakage may
occur.
• The appliance is not intended for use by young children
or infirm persons without supervision.
• The remote controller should be kept away from children
so they cannot play with it.
• Consult with the installation contractor for cleaning.
• Incorrect cleaning of the inside of the air conditioner
could make the plastics parts break and cause water
leakage or electric shock.
• Do not touch the air inlet or aluminum fin of the air conditioner as they can cut and cause injury.
• Do not place objects in direct proximity of the outdoor
unit. Do not let leaves and other debris accumulate
around the unit. Leaves are a hotbed for small animals
which can enter the unit. Once inside the unit, animals
can cause the unit to malfunction, and cause smoke or
fire when they make contact with electrical parts.
NOTE
• Never press the button of the remote controller with a
hard, pointed object. The remote controller may be damaged.
• Never pull or twist the electric wire of the remote controller. It may cause the unit to malfunction.
• Do not place appliances that produce open flames in
places that are exposed to the airflow of the unit or under
the indoor unit. It may cause incomplete combustion or
deformation of the unit due to the heat.
• Do not expose the controller to direct sunlight. The LCD
display can become discolored and may fail to display
the data.
• Do not wipe the controller operation panel with benzene,
thinner, chemical dust cloth, etc. The panel may get discolored or the coating can peel off. If it is heavily dirty,
soak a cloth in water-diluted neutral detergent, squeeze
it well and wipe the panel clean. Then wipe it with
another dry cloth.
• Dismantling of the unit, disposal of the refrigerant, oil,
and additional parts, should be done in accordance with
the relevant local, state, and national regulations.
• Operate the air conditioner in a sufficiently ventilated
area and not surrounded by obstacles. Do not use the air
conditioner in the following places.
a. Places with a mist of mineral oil, such as cutting oil.
b. Locations such as coastal areas where there is a lot of
salt in the air.
c. Locations such as hot springs where there is a lot of
sulfur in the air.
d. Locations such as factories where the power voltage
varies a lot.
e. In cars, boats, and other vehicles.
f. Locations such as kitchens where oil may splatter or
where there is steam in the air.
g. Locations where equipment produces electromag-
netic waves.
h. Places with an acid or alkaline mist.
i. Places where fallen leaves can accumulate or where
weeds can grow.
• Take snow protection measures. Contact your dealer for
the details of snow protection measures, such as the
use of a snow protection hood.
• Do not attempt to do electrical work or grounding work
unless you are licensed to do so. Consult with your
dealer for electrical work and grounding work.
• Pay Attention to Operating Sound. Be sure to use the following places:
a. Places that can sufficiently withstand the weight of
the air conditioner yet can suppress the operating
sound and vibration of the air conditioner.
b. Places where warm air from the air outlet of the out-
door unit or the operating sound of the outdoor unit
does not annoy neighbors.
• Make sure that there are no obstacles close to the outdoor unit. Obstacles close to the outdoor unit may drop
the performance of the outdoor unit or increase the
operating sound of the outdoor unit.
• Consult your dealer if the air conditioner in operation
generates unusual noise.
• Make sure that the drainpipe is installed properly to
drain water. If no water is discharged from the drainpipe
while the air conditioner is in the cooling mode, the
drainpipe may be clogged with dust or dirt and water
leakage from the indoor unit may occur. Stop operating
the air conditioner and contact your dealer.
English 3
Page 6
3. OPERATION RANGE
If the temperature or the humidity is beyond the following conditions, safety devices may work and the air conditioner may not
operate, or sometimes, water may drop from the indoor unit.
OPERATION
COOLING 23 to 115 (DB) 57 to 77 (WB)
HEATING 0 to 60 (WB) 59 to 80.5 (DB)
TEMPERATURE (°F)
OUTDOOR INDOOR
Regarding drainage of drain pipe
• Is the drain pipe executed to perform complete drainage?
If proper drainage is not carried out from the outdoor drain
pipes during air-conditioning operation, chances are that
dust and dirt are clogged in the pipe. This may result in a
water leakage from the indoor unit. Under such circumstances, stop the operation of the air conditioner, and then
consult your dealer or our service station.
5. OPERATION PROCEDURE
DB: Dry bulb temperature (°F)
WB: Wet bulb temperature (°F)
The setting temperature range of the remote controller is 60°F
to 90°F.
4. INSTALLATION SITE
Regarding places for installation
• Is the air conditioner installed at a well-ventilated place
where there are no obstacles around?
• Do not use the air conditioner in the following places.
a. Filled with much mineral oil such as cutting oil
b. Where there is much salt such as a beach area
c. Where sulfured gas exists such as a hot-spring resort
d. Where there are considerable voltage fluctuations such as
a factory or plant
e. Vehicles and vessels
f. Where there is much spray of oil and vapor such as a
cookery, etc.
g. Where there are machines generating electromagnetic
waves
h. Filled with acid and/or alkaline steam or vapor
• Is a snow protection measure taken?
For details, consult your dealer.
Regarding wiring
• All wiring must be performed by an authorized electrician.
To do wiring, ask your dealer. Never do it by yourself.
• Make sure that a separate power supply circuit is provided for this air conditioner and that all electrical work
is carried out by qualified personnel according to local
laws and regulations.
Pay attention to running noises, too
• Are the following places selected?
a. A place that can sufficiently withstand the weight of the air
conditioner with less running noises and vibrations.
b. A place where the hot wind discharged from the air outlet
of the outdoor unit and the running noises.
• Are you sure that there are no obstacles near the air outlet of the outdoor unit?
Such obstacles may result in declined performance and
increased running noises.
• If abnormal noises occur in use, consult your dealer.
Read the operation manual that came with the
remote controller.
• Operating procedure varies with heat pump type and cooling
only type. Contact your Daikin dealer to confirm your system
type.
• To protect the unit, turn on the main power switch 6 hours
before operation.
• If the main power supply is turned off during operation, operation will restart automatically after the power turns back on
again.
6. OPTIMUM OPERATION
Observe the following precautions to ensure the system operates.
• Adjust the room temperature properly for a comfortable environment. Avoid excessive heating or cooling.
• Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
• Ventilate the room regularly.
Using the unit for long periods of time requires attentive ventilation of the room.
• Keep doors and windows closed. If the doors and windows
remain open, room air will flow out and cause to decrease the
effect of cooling and heating.
• Do not place other heaters directly below the indoor unit.
They may deform due to the heat.
• Never place objects near the air inlet and the air outlet of the
unit. It may cause deterioration in the effect or stop in the
operation.
• Turn off the main power supply switch when it is not used for
long periods of time. When the main power switch is turned
on, some watts of electricity is being used even if the system
is not operating. Turn off the main power supply switch for
saving energy. When reoperating, turn on the main power
supply switch 6 hours before operation for smooth running
(Refer to MAINTENANCE).
• When the display shows “Time to clean filter” ask a qualified
service person to clean the filter (Refer to MAINTENANCE).
• Fully use the function of airflow direction adjust.
Cold air gathers on the floor, and warm air gathers in the ceiling.
Set the airflow direction parallel during cooling or dry operation, and set it downwards during heating operation.
Do not let the air blow directly to a person.
• It takes time for the room temperature to reach the set temperature.
We recommend starting the operation in advance using timer
operation.
4 English
Page 7
7. MAINTENANCE
(FOR SERVICE PERSONNEL)
WAR NING
• Only a qualified person is allowed to perform maintenance without daily maintenance.
• Before touching any of connection wirings, be sure to
turn off all power supply switches.
• Do not use flammable materials (e.g., hairspray or insecticide) near the product.
Do not clean the product with organic solvents such as
paint thinner.
The use of organic solvents may cause crack damage to the
product, electric shocks, or fire.
• Contact professional personnel about attachment of
accessories and be sure to use only accessories specified by the manufacturer.
If a defect results from your own workmanship, it may result
in water leaks, electric shock or fire.
• Consult your dealer regarding cleaning the inside of the
air conditioner.
Improper cleaning may cause breakage of plastic parts,
water leakage and other damage as well as electric shocks.
CAUTION
• Before cleaning, be sure to stop unit operation, turn the
breaker off or remove the power cord.
Otherwise, an electric shock and injury may result.
• Do not wash the air conditioner with water, as this may
result in electric shocks or fire.
• Watch your steps at the time of air filter cleaning or
inspection.
High-place work is required, to which utmost attention must
be paid.
If the scaffold is unstable, you may fall or topple down, thus
causing injury.
2. Remove the air filter.
Perform the operation in the order (1) and (2)
Fig. 2
(2)
(1)
(1) Pull the ends of the air filter down and remove
the holes of the air filter from the grille protrusions.
(Both left and right sides.)
Air filter Holes
(2) Lift the air filter and remove the holes of the air
filter from the protrusions on the upper side of
the grille. (Both left and right sides.)
Lift
Protrusions
on grille
Air filter
Holes
Protrusions
on grille
Protrusions
on grille
HOW TO CLEAN THE AIR FILTER
Clean the air filter when the display shows “Time to clean filter”.
It will display that it will operate for a set amount of time.
Increase the frequency of cleaning if the unit is installed in a
room where the air is extremely contaminated.
If the dirt becomes impossible to clean, change the air filter. (Air
filter for exchange is optional.)
1. Open the suction grille.
Pull it downward slowly while pressing the
buttons provided on two spots.
(Do the same procedure for closing.)
Fig. 1
English 5
3. Clean the air filter.
Use vacuum cleaner A) or wash the air filter with water B).
A) Using a vacuum cleaner
B) Washing with water
When the air filter is very dirty,
use soft brush and neutral detergent
Remove water and dry in the shade.
NOTES
• Do not wash the air conditioner with hot water of more than
120°F. Doing so may result in discoloration or deformation.
• Never dry the filter by direct firing. Doing so may result in
burning.
4. Fix the air filter.
Refer to item No. 2.
Page 8
5. Shut the suction grille.
Slowly push up the suction grille, and then securely hook it
onto the decoration panel while pushing the two knobs.
2. Remove the lace of the suction grille.
Remove the laces hooked on the two metal fittings of the
panel body.
PRECAUTION
• When closing the suction grille, the lace might be
pinched.
Make sure the lace has not come out of the suction grille
before closing it.
Good Wrong
Lace
Does not
Suction grille
6. After turning on the power, press FILTER SIGN RESET
button.
The “Time to clean filter” display vanishes.
protrude to
the side
HOW TO CLEAN AIR OUTLET AND OUTSIDE PANELS
• Clean with soft cloth
• When it is difficult to remove stains, use water or neutral
detergent.
• When the flap is extremely contaminated, remove it as below
and clean or exchange it.
(Flap for exchange is optional.)
NOTES
• Do not use gasoline, benzene, thinner, polishing powder, liq-
uid insecticide. It may cause discoloring or warping.
• Do not let the indoor unit get wet. It may cause an electric
shock or a fire.
• Do not scrub firmly when washing the blade with water.
The surface sealing may peel off.
• Do not use water or air of 120°F or higher for cleaning air fil-
ters and outside panels.
HOW TO CLEAN THE SUCTION GRILLE
1. Open the suction grille.
Push it downward slowly while pressing the buttons provided on two spots. (Follow the same procedure for closing.)
Fig. 3
Metal fittings
Lace
3. Detach the suction grille.
Open the suction grille 45 degrees and lift it upward.
Fig. 4
Connection
Ta b
4. Detach the air filter.
Refer to “HOW TO CLEAN THE AIR FILTER”.
(Refer to Fig. 2)
5. Clean the suction grille.
Wash with a soft bristle brush and
neutral detergent or water, and dry
thoroughly.
• When very grimy
Directly apply the type of detergent
used for cleaning ventilation fans or ovens, wait 10 minutes,
and then rinse with water.
NOTE
• Do not wash the air conditioner with hot water of more than
120°F. Doing so may result in discoloration or deformation.
6. Reattach the air filter.
Refer to “HOW TO CLEAN THE AIR FILTER”.
(Refer to Fig. 2)
7. Reattach the suction grille.
Refer to item No. 2.
8. Fit the lace of the suction grille.
Fit in the reverse order of the procedure 2.
9. Close the suction grille.
Refer to item No. 1
START UP AFTER A LONG STOP
Confirm the following.
• Check that the air inlet and outlet are not blocked.
Remove any obstacle.
• Check if the ground is connected.
Might there be a broken wire somewhere?
Contact your dealer if there are any problems.
Clean the air filter and outside panels.
• After cleaning the air filter, make sure to attach it.
6 English
Page 9
Turn on the main power supply switch.
• The display on the remote controller will be shown when the
power is turned on.
• To protect the unit, turn on the main power switch at least 6
hours before operation.
WHAT TO DO WHEN STOPPING THE SYSTEM
FOR A LONG PERIOD
Turn on FAN OPERATION for a half day and dry the unit.
• Read the operation manual attached to the remote controller.
Turn off the power supply.
• When the main power switch is turned on, some watts of
electricity is being used even if the system is not operating.
Turn off the main power supply switch for saving energy.
• The display on the remote controller will vanish when the
main power switch is turned off.
Clean the air filter and the exterior.
• Be sure to replace the air filter to its original place after clean-
ing. Refer to “MAINTENANCE”.
8. NOT MALFUNCTION OF THE AIR
CONDITIONER
The following symptoms do not indicate air conditioner malfunction
I. THE SYSTEM DOES NOT OPERATE
• The system does not restart immediately after the ON/
OFF button is pressed.
If the OPERATION lamp lights, the system is in normal condition.
It does not restart immediately because a safety device
operates to prevent overload of the system. After 3 minutes,
the system will turn on again automatically.
• The system does not restart immediately when TEM-
PERATURE SETTING button is returned to the former
position after pushing the button.
If the OPERATION lamp lights, the system is in normal condition.
It does not restart immediately because a safety device
operates to prevent overload of the system. After 3 minutes,
the system will turn on again automatically.
• The system does not start when the display shows
CENTRAL
“ ” and it flashes for a few seconds after pressing
CONTROL
an operation button.
This is because the system is under centralized control.
Flashes on the display indicates that the system cannot be
controlled by the remote controller.
• The system does not start immediately after the power
supply is turned on.
Wait one minute until the micro computer is prepared for
operation.
II. WHITE MIST COMES OUT OF A UNIT
• When humidity is high during cooling operation. (In
oily or dusty places)
If the inside of an indoor unit is extremely contaminated, the
temperature distribution inside a room becomes uneven. It
is necessary to clean the inside of the indoor unit. Ask your
Daikin dealer for details on cleaning the unit. This operation
requires a qualified service person.
• When the system is changed over to HEATING OPERATION after DEFROST OPERATION.
Moisture generated by DEFROST becomes steam and
exists.
III. NOISE OF AIR CONDITIONERS
• A ringing sound after the unit is started.
This sound is generated by the temperature regulator
working.
It will quiet down after about a minute.
• A continuous flow “Shuh” sound is heard when the
systems is in COOLING or DEFROST OPERATION.
This is the sound of refrigerant gas flowing through both
indoor and outdoor units.
• A “Shuh” sound which is heard at the start or immediately after the stop of operation or which is heard at the
start or immediately after the stop of DEFROST OPERATION.
This is the noise of refrigerant caused by flow stop and flow
change.
• A continuous low “Shah” sound is heard when the system is in COOLING OPERATION or at a stop.
The noise is heard when the drain pump is in operation.
• A “Pishi-pishi” 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.
IV. DUST FROM THE UNITS
• Dust may blow out from the unit after starting operation
from long resting time.
Dust absorbed by the unit blows out.
V. THE UNITS GIVE OFF ODORS
The unit absorbs the smell of rooms, furniture, cigarettes,
etc., and then emits them.
9. TROUBLE SHOOTING
I. If one of the following malfunctions occurs, take
the measures shown below and contact your
Daikin dealer.
The system must be repaired by a qualified service person.
WAR NING
When the air conditioner is in abnormal conditions (smell of something burning, etc), turn off
the power supply, and contact your dealer
Continued operation under such circumstances may result in
a failure, electric shock or fire.
• If a safety device such as a fuse, a breaker or a ground fault
circuit interrupter frequently actuates;
Measure: Do not turn on the main power switch.
• If the ON/OFF switch does not properly work;
Measure: Turn off the main power switch.
English 7
Page 10
• If water leaks from unit.
Measure: Stop the operation.
Cool
Set to
Cool
74F
Error : Press Menu button
If an error occurs, either one of the following items will flash in the basic screen.
“Error: Push Menu button”
* The operation lamp will flash.
“Warning: Push Menu button”
* The operation lamp will not flash.
Error code AI
Contact Info
0123-456-7890
Indoor Model ---/000
Outdoor Model ---/000
When pressing Menu/OK button,
the error code will flash and the service
contact and model name or code may
appear.
Operation
lamp
3. The system operates but it does not sufficiently
cool or heat.
•
If the air inlet or outlet of the indoor or the outdoor unit is
blocked with obstacles.
Remove the obstacle and make it well-ventilated.
• If the air filter is clogged.
Ask a qualified service person to clean the air filters
(Refer to MAINTENANCE).
• If the set temperature is not proper.
• If the FAN SPEED button is set to LOW SPEED.
• If the airflow angle is not proper (Refer to AIRFLOW
DIRECTION ADJUST).
• If the doors or the windows are open. Shut doors or win-
dows to prevent wind from coming in.
•
If direct sunlight enters the room (when cooling).
Use curtains or blinds.
• When there are too many inhabitants in the room (when
cooling).
Cooling effect decreases if heat gain of the room is too
large.
• If the heat source of the room is excessive (when cool-
ing).
Cooling effect decreases if heat gain of the room is too
large.
Measure:Notify your Daikin dealer and inform him/her of the
display.
II. If the system does not properly operate except for
the above mentioned case, and none of the above
mentioned malfunctions is evident, investigate
the system according to the following procedures.
1. If the system does not operate at all.
• Check if there is a power failure.
Wait until power is restored. If power failure occurs during
operation, the system automatically restarts immediately
after the power supply recovers.
• Check if no fuse has blown.
Turn off the power supply.
• Check if the breaker is
blown.
Turn the power on with
the breaker switch in the
off position.
Do not turn the power on
with the breaker switch in
the trip position.
(Contact your dealer.)
Breaker
(ground fault circuit interrupter)
ON
OFF
Switch
Trip position
2. If the system stops operating after operating the
system.
• Check if the air inlet or outlet of outdoor or indoor unit is
blocked by obstacles.
Remove the obstacle and make it well-ventilated.
• Check if the air filter is clogged.
Ask a qualified service person to clean the air filters
(Refer to MAINTENANCE).
8 English
Page 11
1645 Wallace Drive, Suite 110
Carrollton, TX 75006 USA
info@daikinac.com
www.daikinac.com
3P177429-11X EM11A060
(1110)
HT
Loading...