DAIKIN FBQ60BV1 Air Conditioner User Manual

FBQ60BV1 Air Conditioner

OPERATION MANUAL

SPLIT SYSTEM

MODELS (Ceiling-mounted cassette built-in type)

FBQ60BV1 FBQ71BV1

FBQ60BVL FBQ71BVL

English
Air Conditioner

Thank you for purchasing this Daikin air conditioner. Carefully read this operation manual before using the air conditioner. It will tell you how to use the unit properly and help you if any trouble occurs. After reading the manual, file it away for future reference.

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CONTENTS
ILLUSTRATIONS…………………………………………. [1] 1. WHAT TO DO BEFORE OPERATION……….. 1 2. SAFETY CONSIDERATIONS …………………… 1 3. OPERATION RANGE ……………………………… 3 4. INSTALLATION SITE ………………………………. 3 5. NAME AND FUNCTION OF EACH SWITCH AND DISPLAY ON THE REMOTE CONTROLLER……………………………………….. 4 6. OPERATION PROCEDURE …………………….. 4 7. OPTIMUM OPERATION ………………………….. 6 8. MAINTENANCE (FOR SERVICE PERSONNEL) ………………… 6 9. NOT MALFUNCTION OF THE AIR CONDITIONER ………………………………………. 8
10. TROUBLE SHOOTING ……………………………. 9

NOTE · Contact your Daikin dealer in case of changing
the combination or setting of group control and two remote controllers control system.
Names and functions of parts
Refer to figure 2 on page [1] a Indoor unit b Remote controller c Inlet air d Discharge air e Refrigerant piping, connection electric wire f Drain pipe
Suction panel (optional) g Equipped with an air filter that removes dust
and dirt. Drain pumping out device (built-in) h Drains water removed from the room during cooling.

1. WHAT TO DO BEFORE OPERATION
This operation manual is for the system with standard control. Before initiating operation, contact your Daikin dealer for the operation that corresponds to your system.
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.
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.

2. SAFETY CONSIDERATIONS
We recommend that you read this instruction manual carefully before use to gain full advantage of the function of the air conditioner, and to avoid malfunction due to mishandling. This air conditioner comes under the term “appliances not accessible to the general public”.
· The precautions described below are WARNING and CAUTION. These are very important precautions concerning safety. Be sure to observe all of them without fail.
WARNING .. These are the matters with possibilities leading to serious consequences such as death or serious injury due to erroneous handling.
CAUTION … These are the matters with possibilities leading to injury or material damage due to erroneous handling including probabilities leading to serious consequences in some cases.
· After reading, keep this manual at a place where any user can read at any time. Furthermore, make certain that this operation manual is handed to a new user when he takes over the operation.

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WARNING
Avoid exposure of your body directly to the cold air for a long time, or avoid excessive exposure of your body to the cold air. Otherwise, your physical condition may be deteriorated and/or your health may be ruined. When the air conditioner is in abnormal conditions (smell of something burning, etc), turn off power, and contact the dealer where you purchased the air conditioner. Continued operation under such circumstances may result in a failure, electric shock, and fire. Ask your dealer for installation of the air conditioner. Incomplete installation performed by yourself may result in a water leakage, electric shock, and fire. Ask your dealer for improvement, repair, and maintenance. Incomplete improvement, repair, and maintenance may result in a water leakage, electric shock, and fire. Do not insert your finger, a stick, etc., into the air inlet, outlet, and fan blades. A fan in high-speed running may result in injury. The refrigerant in the air conditioner is safe and normally does not leak. If the refrigerant leaks inside the room, the contact with a fire of a burner, a heater or a cooker may result in a harmful gas. Do not use the air conditioner until when a service person confirms to finish repairing the portion where the refrigerant leaks. For refrigerant leakage, consult your dealer. When the air conditioner is to be installed in a small room, it is necessary to take proper measures so that the amount of any leaked refrigerant does not exceed the limiting concentration even when it leaks. If the refrigerant leaks exceeding the level of limiting concentration, an oxygen deficiency accident may happen. For installation of separately sold component parts, ask a specialist. Be sure to use the separately sold component parts designated by our company. Incomplete installation performed by yourself may result in a water leakage, electric shock, and fire. Ask your dealer to move and reinstall the air conditioner. Incomplete installation may result in a water leakage, electric shock, and fire. Do not use any fuse with improper capacity. The use of a piece of wire and whatnot may result in a failure and fire.
CAUTION
Do not use the air conditioner for other purposes. Do not use the air conditioner for a special application such as the storage of foods, animals and plants, precision machines, and art objects as otherwise the deterioration of quality may result.
English

Do not remove the air outlet of the outdoor unit. The fan may get exposed and result in injury. Do not place items that might be damaged by water under the indoor unit. Water may condensate and drip if the humidity reaches 80% or if the drain exit gets clogged. When the air conditioner is used in combination with burners or heaters, perform sufficient ventilation. Insufficient ventilation may result in an oxygen deficiency accident. Check and make sure that foundation blocks are not damaged after a long use. If they are left in a damaged condition, the unit may fall and result in injury. Neither place a flammable spray bottle near the air conditioner nor perform spraying. Doing so may result in a fire. To clean the air conditioner, stop operation, and unplug the power cord from the outlet. Otherwise, an electric shock and injury may result. Do not operate the air conditioner with a wet hand. An electric shock may result. Do not place a burner or heater at a place directly exposed to the wind from the air conditioner. Incomplete combustion of the burner or heater may result. Do not allow a child to mount on the outdoor unit or avoid placing any object on it. Falling or tumbling may result in injury. Never expose little children, plants or animals directly to the air flow. Adverse influence to little children, plants or animals may result. Do not wash the air conditioner with water. Electric shock or fire may result. Do not install the air conditioner at any place where flammable gas may leak out. If the gas leaks out and stays around the air conditioner, a fire may break out. Be sure to install an earth leakage breaker. Unless it is installed, an electric shock or fire may result. Be sure the air conditioner is electrically grounded. Do not connect the grounding conductor to a gas pipe, water pipe, lightning arrester, and the grounding conductor for a telephone. Imperfect grounding work may result in an electric shock. Execute complete drain piping for perfect drainage. Incomplete piping may result in a water leakage. The appliance is not intended for use by young children or infirm persons without supervision. Young children should be supervised to ensure that they do not play with the appliance.
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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.

COOLING ONLY TYPE

TEMPERATURE[°C]

OUTDOOR

INDOOR

­5 to 46(DB)

21 to 32(DB)/ 14 to 23(WB)

HEAT PUMP TYPE

OPERATION

TEMPERATURE[°C]

OUTDOOR

INDOOR

COOLING

­5 to 46(DB)

21 to 32(DB)/ 14 to 23(WB)

HEATING

­14 to 21(DB)/ ­15 to 15.5(WB)

14 to 28(DB)

D B: Dry bulb temperature WB: Wet bulb temperature

The setting temperature range of the remote controller is 16°C to 32°C.

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.
Regarding drainage of drain piping
· Is the drain piping 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.

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5. NAME AND FUNCTION OF EACH SWITCH AND DISPLAY ON THE REMOTE CONTROLLER
Refer to figure 1 on page [1] The illustrations in this operating manual correspond to the remote control format BRC1C type. Although the display and shape of the buttons on the BRC1B type are slightly different, they may be operated in the same manner.

ON/OFF BUTTON 1 Press the button and the system will start. Press
the button again and the system will stop.

OPERATION LAMP (RED) 2
The lamp lights up during operation.

DISPLAY ”

” (UNDER CENTRAL-

IZED CONTROL) 3
When this display shows, the system is

UNDER CENTRALIZED CONTROL.

DISPLAY ” ” ” ” ” ” ” ” ” ” (OPERATION MODE)

4 This display shows the current OPERATION MODE. For cooling only type, ” ” (Auto) and ” ” (Heating) are not installed.

DISPLAY ” TEST” (INSPECTION/TEST

OPERATION) 5 When the INSPECTION/TEST OPERATION
BUTTON is pressed, the display shows the system mode is in.

DISPLAY ” hr ” (PROGRAMMED TIME)
hr
6 This display shows the PROGRAMMED
TIME of the system start or stop.

7 DISPLAY ” C ” (SET TEMPERATURE) This display shows the set temperature.

8 DISPLAY ”

” (FAN SPEED)

This display shows the set fan speed.

DISPLAY ” ” (TIME TO CLEAN AIR FIL9 TER)
Refer to “HOW TO CLEAN THE AIR FILTER”.

10 DISPLAY ”

” (DEFROST)

Refer to “DEFROST OPERATION”.

NON-FUNCTIONING DISPLAY If that particular function is not available, pressing the button may display the words “NOT AVAILABLE” for a few seconds. 11 When running multiple units simultaneously The “NOT AVAILABLE” message will only be appear if none of the indoor units is equipped with the function. If even one unit is equipped with the function, the display will not appear. TIMER MODE START/STOP BUTTON 12 Refer to “PROGRAM TIMER OPERATION”. TIMER ON/OFF BUTTON 13 Refer to “PROGRAM TIMER OPERATION”. INSPECTION/TEST OPERATION BUTTON 14 This button is used only by qualified service persons for maintenance purposes. PROGRAMMING TIME BUTTON 15 Use this button for programming “START and/ or STOP” time. TEMPERATURE SETTING BUTTON 16 Use this button for SETTING TEMPERATURE. FILTER SIGN RESET BUTTON 17 Refer to “HOW TO CLEAN THE AIR FILTER”. FAN SPEED CONTROL BUTTON 18 Press this button to select the fan speed, HIGH or LOW, of your choice. OPERATION MODE SELECTOR BUTTON 19 Press this button to select OPERATION MODE.
NOTE · For the sake of explanation, all indications are
shown on the display in figure 1 contrary to actual running situations.
6. OPERATION PROCEDURE
Refer to figure 1 on page [1] · 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.

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COOLING, HEATING, AUTOMATIC, FAN, AND PROGRAM DRY OPERATION
Operate in the following order.

1

OPERATION MODE SELECTOR

Press OPERATION MODE SELECTOR button several times and select the OPERATION MODE of your choice as follows.
COOLING OPERATION ……………………. ” ” HEATING OPERATION …………………….. ” ” AUTOMATIC OPERATION………………… ” ”
· In this operation mode, COOL/HEAT changeover is automatically conducted.
FAN OPERATION…………………………….. ” ” DRY OPERATION ……………………………. ” ”
· The function of this program is to decrease the humidity in your room with the minimum temperature decrease.
· Micro computer automatically determines TEMPERATURE and FAN SPEED.
· This system does not go into operation if the room temperature is below 16°C.
Refer to figure 3 on page [1] · For cooling only type, “COOLING”, “FAN” and
“DRY” operation are able to select.

2

ON/OFF

Press ON/OFF button
OPERATION lamp lights up or goes off and the system starts or stops OPERATION.

[EXPLANATION OF HEATING OPERATION]

DEFROST OPERATION

· As the frost on the coil of an outdoor unit increase,

heating effect decreases and the system goes into DEFROST OPERATION. · The indoor unit fan stops and the remote control-

ler display shows ”

“.

· After 6 to 8 minutes (maximum 10 minutes) of DEFROST OPERATION, the system returns to

HEATING OPERATION.

Regarding outside air temperature and heating capacity
· The heating capacity of the air conditioner declines as the outside air temperature falls. In such a case, use the air conditioner in combination with other heating systems.
· A warm air circulating system is employed, and therefore it takes some time until the entire room is warmed up after the start of operation.

· An indoor fan runs to discharge a gentle wind

automatically until the temperature inside the air

conditioner reaches a certain level. At this time,

the remote controller displays ”

“. Leave it

as it stands and wait for a while.

· When the warm air stays under the ceiling and

your feet are cold, we recommend that you use a

circulator (a fan to circulate the air inside the

room). For details, consult your dealer.

ADJUSTMENT
For programming TEMPERATURE, FAN SPEED and AIR FLOW DIRECTION, follow the procedure shown below.
TEMPERATURE SETTING

Press TEMPERATURE SETTING button and program the setting temperature.
Each time this button is pressed, setting temperature rises 1°C.
Each time this button is pressed, setting temperature lowers 1°C.
· The setting is impossible for fan operation.

NOTE · The setting temperature range of the remote con-
troller is 16°C to 32°C.
FAN SPEED CONTROL

Press FAN SPEED CONTROL button.
High or Low fan speed can be selected. The microchip may sometimes control the fan speed in order to protect the unit.

PROGRAM TIMER OPERATION

Operate in the following order.

· The timer is operated in the following two ways.

· Programming the stop time (

) ….

The system stops operating after the set time has

elapsed.

· Programming the start time (

) ….

The system starts operating after the set time has

elapsed.

· The timer can be programmed a maximum of

72 hours.

· The start and the stop time can be simultaneously

programmed.

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1

TIMER MODE START/STOP

Press the TIMER MODE START/STOP button

several times and select the mode on the

display.

The display flashes.

For setting the timer stop …. ”

”

For setting the timer start …. ”

”

2

PROGRAMMING TIME

Press the PROGRAMMING TIME button and set the time for stopping or starting the system.
When this button is pressed, the time advances by 1 hour.

When this button is pressed, the time goes backward by 1 hour.

3

TIMER ON/OFF

Press the TIMER ON/OFF button.
The timer setting procedure ends.

The display ”

or

” changes from flash-

ing light to a constant light.

Refer to figure 4 on page [1]

NOTE · When setting the timer Off and On at the same time,
repeat the above procedure from 1 to 3 once again.

When the timer is programmed to stop the system after 3 hours and start the system after 4 hours, the system will stop after 3 hours and then 1 hour later the system will start. · After the timer is programmed, the display shows
the remaining time. · Press the TIMER ON/OFF button once again to
cancel programming. The display vanishes.

7. OPTIMUM OPERATION
Observe the following precautions to ensure the system operates. · Adjust the room temperature properly for a comfort-
able environment. Avoid excessive heating or cooling. · Prevent direct sunlight from entering a room dur-
ing 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 6hours before operation for smooth running (Refer to MAINTENANCE).
· When the display shows ” ” (TIME TO CLEAN AIR FILTER), ask a qualified service person to clean the filters (Refer to MAINTENANCE).
8. MAINTENANCE (FOR SERVICE PERSONNEL)
ONLY A QUALIFIED SERVICE PERSON IS ALLOWED TO PERFORM MAINTENANCE
IMPORTANT!
· BEFORE OBTAINING ACCESS TO TERMINAL DEVICES, ALL POWER SUPPLY CIRCUITS MUST BE INTERRUPTED
· To clean the air conditioner, be sure to stop operation, and turn the power switch off. Otherwise, an electric shock and injury may result.
· Do not wash the air conditioner with water. Doing so may result in an electric shock.
· Be careful with a scaffold or staging. Caution must be exercised because of work at a high place.
HOW TO CLEAN THE AIR FILTER
Clean the air filter when the display shows ” ” (TIME TO CLEAN AIR 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. (For changing air filter, please contact your dealer.)

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1. Open the suction grille. Slide both knobs simultaneously as shown and then pull them downward. (Do the same procedure for closing.) (Refer to Fig.1)

NOTE · Do not wash the air conditioner with hot water of
more than 50°C, as doing so may result in discoloration and/or deformation. · Do not expose it to fire, as doing so may result in burning.
4. Fix the air filter. Align the two hangers and push the air filter up. Confirm that four hangers are fixed. (Refer to Fig.4)

Fig. 1
(If chains are present. Unhook the chains.) (Refer to Fig.2)

Fig. 2 2. Remove the air filters.
Remove the air filters by pulling its cloth forward. (Refer to Fig.3)
Fig. 3 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.

Fig. 4
5. Close the suction grille. Refer to item No. 1.
6. After turning on the power, press FILTER SIGN RESET button. The display ” “(TIME TO CLEAN AIR FILTER) vanishes.
HOW TO CLEAN AIR OUTLET, SUCTION GRILLE AND OUTSIDE PANELS
· Clean with soft cloth. · When it is difficult to remove stains, use water or
neutral detergent. · Clean the suction grille when it is shut.
NOTE · Do not use gasoline, benzene, thinner, polishing
powder, liquid 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 use water or air of 50°C or higher for cleaning air filters and outside panels.
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 earth is connected.
Might there be a broken wire somewhere? Contact your dealer if there are any problems.

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English

Clean the air filter and outside panels · After cleaning the air filter, make sure to attach it.
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. · Refer to “FAN OPERATION”.
Cut 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 cleaning. Refer to “MAINTENANCE”.
9. 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 TEMPERATURE 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 ”

” (UNDER CENTRALIZED

CONTROL) and it flashes for few seconds

after pressing an operation button.

This is because the system is under centralized con-

trol. 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 pre-

pared for operation.

II. WHITE MIST COMES OUT OF A UNIT · When humidity is high during cooling opera-
tion (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.

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V. THE UNITS GIVE OFF ODORS The unit absorbs the smell of rooms, furniture, cigarettes, etc., and then emits them.
VI.THE LIQUID CRYSTAL OF THE REMOTE CONTROLLER SHOW ” ”
· It happens immediately after the main power supply switch is turned on. This shows that the remote controller is in normal condition. This continues temporary.
10. 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.
WARNING When the air conditioner is in abnormal conditions (smell of something burning, etc), turn off power, and contact your dealer Continued operation under such circumstances may result in a failure, electric shock, and fire.
· If a safety device such as a fuse, a breaker, or an earth leakage breaker frequently actuates, or ON/ OFF switch does not properly work. Measure: Turn off the main power switch
· If water leaks from unit. Measure: Stop the operation.
· If the display ” ” (INSPECTION), “UNIT No.”, and the OPERATION lamp flash and the “MALFUNCTION CODE” appears.
OPERATION lamp

UNIT No.

C

L H

INSPECTION display

INDOOR UNIT No. in which a malfunction occurs
MALFUNCTION CODE

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 the fuse has blown or breaker has worked. Change the fuse or set the breaker.
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).
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 (Refer to ADJUSTMENT). · If the FAN SPEED button is set to LOW SPEED (Refer to ADJUSTMENT). · If the doors or the windows are open. Shut doors or windows 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 cooling). Cooling effect decreases if heat gain of the room is too large.

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3P156215-3 EM04A075 (0502) HT

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