If you have problems or questions concerning your Air Conditioner, you will need the following
information. Model and serial numbers are on the nameplate on the bottom of the cabinet.
Model No. _________________________________ Serial No. _______________________
Date of purchase ______________________________________________________________
The following symbols used in this manual, alert you to potentially dangerous conditions
to users, service personnel or the appliance:
This symbol refers to a hazard or unsafe practice
which can result in severe personal injury or
death.
This symbol refers to a hazard or unsafe practice
which can result in personal injury or product or
property damage.
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INSTALLATION LOCATION
• We recommend that this air conditioner be installed properly by qualified installation
technicians in accordance with the Installation Instructions provided with the unit.
• Before installation, check that the voltage of the electric supply in your home or office is the
same as the voltage shown on the nameplate.
• Do not install this air conditioner where there are fumes or flammable gases, or in an
extremely humid space such as a greenhouse.
• Do not install the air conditioner where excessively high heat-generating objects
are placed.
Avoid: To protect the air conditioner from heavy corrosion, avoid installing the outdoor unit where
salty sea water can splash directly onto it or in sulphurous air near a spa.
ELECTRICAL REQUIREMENTS
1. All wiring must conform to the local electrical codes. Consult your dealer or a qualified
electrician for details.
2. Each unit must be properly grounded with a ground (or earth) wire or through the supply
wiring.
3. Wiring must be done by a qualified electrician.
NOTE
To warm up the system, the power mains must be turned on
at least five (5) hours before operation. Leave the power
mains ON unless you will not be using this appliance for an
extended period.
Disconnect the mains plug from the supply socket and main circuit breaker when not in use for
an extended period of time. When turning off some of the outdoor or indoor units, the entire
system becomes inoperative.
Power mains
ON
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SAFETY INSTRUCTIONS
• Read these Operating Instructions carefully before using this air conditioner. If you still have any difficulties or problems,
consult your dealer for help.
• This air conditioner is designed to give you comfortable room conditions. Use this only for its intended purpose as described in
these Operating Instructions.
Confirm to authorized dealer or specialist on usage of
specified refrigerant type. Using of refrigerant other than
the specified type may cause product damage, burst and
injury etc.
Never touch the unit with wet hands.
Never use or store gasoline or other flammable vapor or
liquid near the air conditioner — it is very dangerous.
Do not use this appliance in a potentially explosive
atmosphere.
This air conditioner has no ventilator for intaking fresh air
from outdoors. You must open doors or windows frequently
when you use gas or oil heating appliances in the same
room, which consume a lot of oxygen from the air.
Otherwise there is a risk of suffocation in an extreme case.
Provide a power outlet to be used exclusively for each unit,
and a power supply disconnect, circuit breaker and earth
leakage breaker for overcurrent protection should be
provided in the exclusive line.
Provide a power outlet exclusively for each unit, and full
disconnection means having a contact separation in all
poles must be incorporated in the fixed wiring in
accordance with the wiring rules.
To prevent possible hazards from insulation failure,
the unit must be grounded.
Do not clean inside the indoor and outdoor units by users.
Engage authorized dealer or specialist for cleaning.
In case of malfunction of this appliance, do not repair by
yourself. Contact to the sales dealer or service dealer for a
repair.
Refrigerant gas leakage may cause fire.
For safety, be sure to turn the air conditioner off and
also to disconnect the power before cleaning or
servicing.
Pull off the power plug from a receptacle, or switch off the
breaker, or switch off the power disconnecting mean to
isolate the air conditioner from the main power supply in
case of emergency.
Do not insert your fingers or other objects into the air
conditioner indoor or outdoor unit, rotating parts may
cause injury.
Do not use modified cord, joint cord, extension
cord or unspecified cord to prevent overheating
and fire.
Stop using the product when any abnormality/failure occurs
and disconnect the power plug or turn off the power switch
and breaker.
(Risk of smoke/fire/electric shock)
Examples of abnormality/failure
• The ELCB trips frequently.
• Burning smell is observed.
• Abnormal noise or vibration of the unit is observed.
• Water leaks from the indoor unit.
• Power cord or plug becomes abnormally hot.
• Fan speed cannot be controlled.
• The unit stops running immediately even if it is switched
on for operation.
• The fan does not stop even if the operation is stopped.
Contact immediately your local dealer for maintenance/
repair.
This appliance is intended to be used by expert or trained
users in shops, in light industry and on farms, or for
commercial use by lay persons.
Do not turn the air conditioner on and off from the power
mains switch. Use the ON/OFF operation button.
Do not stick anything into the air outlet of the outdoor
unit. This is dangerous because the fan is rotating at
high speed.
Do not touch the air inlet or the sharp aluminum fins
of the outdoor unit. You may get injured.
Keep the fire alarm and the air outlet at least 1.5m away
from the unit.
This appliance is not intended for use by persons(including
children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning
use of the appliance by a person responsible for their
safety. Children should be supervised to ensure that do not
play with the appliance.
Do not cool or heat the room too much if babies or invalids
are present.
Do not sit or step on the unit. You may fall down
accidentally.
Do not stick any object into the FAN CASE.
You may be injured and the unit may be
damaged.
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NOTICE
• The compressor may occasionally stop during thunderstorms.
This is not a mechanical failure. The unit automatically recovers after a few minutes.
• The English text is the original instructions. Other languages are translation of the
original instructions.
Stop using the product when any abnormality/failure occurs and
disconnect the power plug.
(Risk of smoke/fire/electric shock)
Examples of
abnormality/
failure
- The product sometimes does not start when turned on.
- The power is sometimes disconnected when the cord is moved.
- Burnt odor or abnormal noise is detected during operation.
- The body is deformed or abnormally hot.
Contact immediately your local dealer for maintenance/repair.
IMPORTANT INFORMATION REGARDING THE REFRIGERANT USED
This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent gases into the
atmosphere.
Refrigerant type: R410A
(1)
value: 1975
GWP
(1)
GWP = global warming potential
Periodical inspections for refrigerant leaks may be required depending on European or local legislation.
Please contact your local dealer for more information.
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INFORMATION
Operation Condition
Use this air conditioner under the following temperature range.
Information for Users on Collection and Disposal of Old Equipment and Used Batteries
These symbols on the products, packaging, and/or accompanying documents mean that used electrical and
electronic products and batteries should not be mixed with general household waste.
For proper treatment, recovery and recycling of old products and used batteries, please take them to
applicable collection points, in accordance with your national legislation and the Directives 2002/96/EC and
2006/66/EC.
By disposing of these products and batteries correctly, you will help to save valuable resources and prevent
any potential negative effects on human health and the environment which could otherwise arise from
inappropriate waste handling.
For more information about collection and recycling of old products and batteries, please contact your local
municipality, your waste disposal service or the point of sale where you purchased the items.
Penalties may be applicable for incorrect disposal of this waste, in accordance with national legislation.
For business users in the European Union
If you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further
information.
[Information on Disposal in other Countries outside the European Union]
These symbols are only valid in the European Union. If you wish to discard these items, please contact your
local authorities or dealer and ask for the correct method of disposal.
Note for the battery symbol (bottom two symbol examples):
This symbol might be used in combination with a chemical symbol. In this case it complies with the requirement
*DBT: Dry bulb temperature
*WBT: Wet bulb temperature
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U1 Type (4-WAY CASSETTE)
OPERATION
Names of Parts
INDOOR UNIT
Water drain
Ceiling panel
(optional)
Air outlet
(4 locations)
Air intake grille
(air intake)
F2 Type (LOW SILHOUETTE DUCTED)
Air outlet duct
Air-outlet grille
Suspension bolt
Indoor unit
Ceiling material
Bolt anchor
D1 Type (1-WAY CASSETTE)
K1 Type (WALL MOUNTED)
Air intake
P1 Type (FLOOR STANDING)
Operation door
(The remote control unit (sold separately) can
be placed inside here.)
Air outlet
Water drain
Ceiling panel
(optional)
Air intake grille
(air intake)
Air outlet
Air outlet
(Air outlet grille)
Front panel
(A drain pan is
provided inside.)
L1 Type (2-WAY CASSETTE)
Water drain
Air outlet
(2 locations)
Air intake
(2 locations)
Ceiling panel
(optional)
R1 Type (CONCEALED FLOOR STANDING)
Air outlet duct
connecting
flange
(optional)
Air outlet
Front panel
Drain pan
Water drain
Air intake
(air filter)
M1 Type (SLIM LOW STATIC DUCTED)
Rectangular solid duct (optional)
Water drain
Electrical box
Air intake
(air filter)
Air intake side filter (rear)
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Y1 Type (4-WAY CASSETTE 60X60)
Water drain
Ceiling panel
(optional)
Air outlet
(4 locations)
Air intake grille
(air intake)
T1 Type (CEILING)
Air outlet
Water drain
(Drain pipe can
be connected to
either the left
or right side.)
Air intake grille
(air intake)
E1 Type (HIGH STATIC PRESSURE DUCTED) for 73,
106 & 140
Air intake side
duct flange (rear)
Water drain
Electrical box
Air outlet
side duct flange
(optional)
MF2 Type (3WAY)
Air outlet
Air intake
Anchor hole
Drain port (bottom)
NOTE
NOTE
E1 Type (HIGH STATIC PRESSURE DUCTED) for 224
& 280
Air intake side
duct flange (rear)
Water drain
Air outlet
side duct flange
(2 locations)
Electrical box
Wireless Remote Controller
(Optional parts)
Refer to the Operating
Instructions attached to the
optional Wireless Remote
Controller.
(Wireless type:
available for all
indoor units)
Timer Remote Controller
(Optional parts)
Refer to the Operating
Instructions attached to the
optional Timer Remote
Controller.
(Wired type:
available for all
indoor units)
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ADJUSTING THE AIRFLOW DIRECTION
The functions differ depending on the indoor unit used. The airflow direction cannot be set
using the remote controller for any unit which is not listed below.
U1 type, Y1 type, L1 type, D1 type, T1 type and K1 type.
• Never use your hands to move the flap (vertical airflow flap) that is controlled using the
remote controller.
• When the air conditioner is turned off, the flap (vertical airflow flap) automatically moves to
the downward position.
• The flap (vertical airflow flap) moves to the upward position when performing the standby
operation for heating. The swing operation is made after the standby operation for heating is
released, but swing is indicated on the remote controller even during the standby operation
for heating.
Setting the airflow
direction
To activate the swing
operation
HeatingCooling and dryingFan operationAll operations
Set the flap (vertical airflow flap) to the downward
position. If the flap is set to the upward position,
the warm air may not reach the floor.
The airflow direction changes each time the FLAP button is pressed during
operation.
Press the FLAP button to set the flap (vertical airflow flap) to the downward position, and then
press the FLAP button again. This displays , and the airflow automatically swings up and
down.
The flap (vertical airflow flap) can
be set to one of three positions.
Initial setting
Initial setting
Initial setting
Continuous
operation
To stop the swing
operation
Press the FLAP button again during the flap swing operation to stop the flap at the desired
position. Then, the airflow can be set from the top position by pressing the FLAP button again.
Indicator when swing operation is stopped
Fan and heatingCooling and drying
During cooling or drying operation, the flap will not stop at the downward position. Even if the
flap is stopped at the downward position during the swing operation, it will not stop until it
moves to the third position from the top.
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ADJUSTING THE AIRFLOW DIRECTION (CONTINUED)
U1 type, Y1 type, L1 type and D1 type air conditioners are equipped with auto flaps.
You can set the airflow direction to a specific angle or to the sweep mode using the remote
controller.
Do not move the flap with your hands.
4-way (U1 type), (Y1 type) • The air outlet flap can be easily removed and washed with water.
Indoor unit
• Be sure to always stop operation before removing the flap.
• After washing with water, allow it to dry, and then remount it with the arrow facing outward.
Ceiling mounted type (T1)
Vertical directions (automatic)
This air conditioner is equipped with an auto flap. You can set the airflow direction to a specific
angle or to the sweep mode using the remote controller. (Refer to the description of the remote
controller.)
Do not move the flap with your hands.
Horizontal directions (manual)
The horizontal airflow direction can be adjusted manually by moving the vertical vanes to the
left or right.
Wall mounted type (K1)
Vertical directions (automatic)
Confirm that the remote controller has been turned on. Press the FLAP button to start the flap
moving up and down. If you want to stop the flap movement and to direct the air in the desired
direction, press the FLAP button again. In the cool mode, do not direct the flap down and move
out of the cooling zone “A”, otherwise, condensation may drip on to the floor. Zone ‘‘A’’ is the
recommended flap position for cooling.
When operating continuously in the fixed airflow direction setting for about an hour, the airflow
direction is automatically controlled and the flap position is changed. The airflow direction may
be different from the display on the remote controller.
Do not move the flap with your hands.
Zone
‘‘A’’ for
cooling
10
Zone ‘‘B’’ for
heating
Horizontal directions (manual)
The horizontal airflow direction can be adjusted manually by moving the vertical vanes to the
left or right.
Concealed duct type (F2, M1, E1)
This air conditioner is not equipped with air outlet parts. These must be obtained locally. Please
refer to the manual of the locally adopted air outlet parts.
Page 11
ADJUSTING THE AIRFLOW DIRECTION FOR
MULTIPLE INDOOR UNITS USING A SINGLE REMOTE
CONTROLLER (WIRED)
• The airflow direction cannot be set using the remote controller for the concealed duct type
(F2, M1, E1) and floor standing type (P1, R1).
• If multiple indoor units are connected to a remote controller, the airflow direction can be set
for each indoor unit by selecting the indoor units (see the operation below).
Auto Flap () button
One outdoor unit and eight indoor units Two outdoor units and four indoor units
No display
Unit No.
1–1
• To set the airflow for individual units, press the UNIT button. Display shows the indoor unit
number under group control. Set the airflow direction for the indoor unit that is shown on the
display.
• Each time UNIT is pressed, the indicator changes in the order shown below.
• When nothing is displayed, you can make the setting for all indoor units in one operation.
• The unit number is displayed as Outdoor Unit Number–Indoor Unit Number. It varies
depending on the number of units under group control.
Unit
Unit
Unit
Unit No.
1–2
Unit No.
1–3
Unit No.
1–8
No
display
No.
1–1
No.
1–2
No.
1–3
Unit
No.
1–4
Unit
No.
2–1
Unit
No.
2–4
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SPECIAL REMARKS
‘‘DRY’’ Operation
How it works • Once the room temperature reaches the level that was set, the unit repeats the cycle of
Heating Operation
Heating performance • Because this appliance heats a room by utilizing the heat of the outside air (heat pump
Defrosting • When the outdoor temperature is low, frost or ice may form on the outdoor heat exchanger
(standby) on the
display
NOTE
turning on and off automatically.
• In order to prevent the humidity in the room from rising again, the indoor fan also turns off
when the unit stops operating.
• The fan speed is set to ‘‘LO.’’ automatically, and cannot be adjusted.
• ‘‘DRY’’ operation is not possible if the outdoor temperature is 15 °C or less.
system), the heating efficiency will fall off when the outdoor temperature is very low. If
sufficient heat cannot be obtained with this heat pump, use another heating appliance in
conjunction with this unit.
coil, reducing the heating performance. When this happens, a microcomputer-controlled
defrosting system operates. At the same time, the fan on the indoor unit stops (or runs at
very low speed in some cases) and the ‘‘STANDBY’’ indicator appears on the display until
defrosting is completed. Heating operation then restarts after several minutes. (This interval
will vary slightly depending upon the outdoor temperature and the way in which frost forms.)
• For several minutes after the start of heating operation, the indoor fan will not start running
(or it will run at very low speed in some cases) until the indoor heat exchanger coil has
warmed up sufficiently. This is because a cold draft prevention system is operating. During
this period, the ‘‘’’ (standby) indicator remains displayed.
• ‘‘’’ (standby) remains displayed during defrosting or when the compressor has been
turned off (or when the unit is running at very low speed) by the thermostat when the
system is in the heating mode.
• Upon completion of defrosting and when the compressor is turned on again, ‘‘’’
(standby) will turn off automatically as heating operation resumes.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume
operation (once the power is restored) using the same settings before the power was cut off.
Air intake and outlet side
(Indoor unit)
12
CARE AND CLEANING
1. For safety, be sure to turn the air conditioner off and also to disconnect the power
before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal
components and cause an electric shock hazard.
Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe
them with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with water. When cleaning the air outlet
side, be careful not to force the vanes out of place.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe
plastic parts using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if handled
improperly; be especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned
periodically. Consult your dealer or service center.
Page 13
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work
properly, contact your dealer or a service center.
INDOOR UNIT
SymptomCause
NoiseSound like streaming water during
OdorDischarged air is smelled during
DewdropDewdrop gets accumurated near air
FogFog occurs during operation in cooling
Fan is rotating for a while even though operation
stops.
Wind-direction changes while operating.
Wind-direction setting cannot be made.
Wind-direction cannot be changed.
When wind-direction is changed, flap operates
several times and stops at designated position.
DustDust accumulation inside indoor unit is discharged.
At the initial high-speed operation, the fan may
sometimes rotate faster (for 3 to 30 minutes) than
the setting speed.
operation or after operation
Cracking noise during operation or
when operation stops.
operation.
discharge during operation
mode.
(Places where large amounts of oil
mist exist at restaurants.)
OUTDOOR UNIT
SymptomCause
No
operation
NoiseNoise often occurs in heating mode.During defrost operation
SteamSteam often occurs in heating mode.
When stopped by remote controller, outdoor unit fan
is sometimes operating for a while even though
outdoor compressor is stopped.
When power is turned ON instantly.Operation is not activated for the first approx. 3 minutes because
When operation is stopped and
resumed immediately.
• Sound of refrigerant liquid flowing inside unit
• Sound of drainage water through drain pipe
Cracking sound due to temperature changes of parts
Indoor odor components, cigarette odor and cosmetic odor accumurated
in the air conditioner and its air is discharged.
Unit inside is dusty. Consult your dealer.
Indoor moisture is cooled by cool wind and accumulated by dewdrop.
• Cleaning is necessary because unit inside (heat exchanger) is dirty.
Consult your dealer as technical engineering is required.
• During defrost operation
• Fan rotating makes operation smoothly.
• Fan may sometimes rotates because of drying heat exchanger due to
settings.
• When air discharge temperature is low or during defrost operation,
horizontal wind flow is made automatically.
• Flap position is occasionally set up individually.
When wind-direction is changed, flap operates after searching for
standard position.
This is for operation check in order to confirm whether the fan motor
rotation is within use range.
compressor protection circuit is activated.
Fan rotating makes operation smoothly.
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CHECK BEFORE REQUIRING SERVICES
SymptomCauseRemedy
Air conditioner does not run at
all although power is turned
on.
Poor cooling or heating
performance
If your air conditioner still does not work properly although you checked the points as described above, first stop the operation and
turn off the power switch. Then contact your dealer and report the serial number and symptom. Never repair your air conditioner
by yourself since it is very dangerous for you to do so. You also report if the inspection mark and the letters E, F, H, L, P in
combination with the numbers appear on the LCD of the remote control unit.
Power failure or after power failurePress ON/OFF operation button on remote control
Operation button is turned off.• Switch on power if breaker is turned off.
Fuse blow out.If blown out, consult your dealer.
Air intake or air discharge port of indoor
and outdoor units is clogged with dust or
obstacles.
Wind speed switch is set to “Low”.Change to “High” or “Strong”.
Improper temperature settingsRefer to “TIPS FOR ENERGY SAVING”.
Room is exposed to direct sunlight in
cooling mode.
Doors and /or windows are open.
Air filter is clogged.Refer to “CARE AND CLEANING”.
Too much heat sources in room in
cooling mode.
Too many people in room in cooling
mode.
unit again.
• If breaker has been tripped, consult your dealer
without turning it on.
Remove dust or obstruction.
Use minimum heat sources and in a short time.
Reduce temperature settings or change to “High” or
“Strong”.
TIPS FOR ENERGY SAVING
Avoid
• Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be
damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by
the sun, it will take longer to cool the room.
Do
• Always try to keep the air filter clean. (Refer to “CARE AND CLEANING”.) A clogged filter will impair the performance of the
unit.
• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
NOTE
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the
same settings before the power was interrupted.