Hitachi RAK-18NHA2, RAK-25NHA2, RAK-50NHA2, RAK-35NHA2 Instruction Manual

SPLIT TYPE AIR CONDITIONER

INDOOR UNIT

MODEL

RAK-18NHA2
RAK-25NHA2
RAK-35NHA2
RAK-50NHA2

INDOOR UNIT

RAK-18NHA2
RAK-25NHA2
RAK-35NHA2
RAK-50NHA2

– 1 –

SAFETY PRECAUTION

● Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.

● Pay special attention to signs of “

observed strictly, may cause death or serious injury. The “Caution” section contains matters which may result in serious
consequences if not observed properly. Please observe all instructions strictly to ensure safety.

● The sign indicate the following meanings.

Warning” and “!Caution”. The “Warning” section contains matters which, if not

!

Make sure to connect earth line.

Indicates the instructions that must be followed.

● Please keep this manual after reading.

PRECAUTIONS DURING INSTALLATION

● Do not reconstruct the unit.

Water leakage, fault, short circuit or fi re may occur if you reconstruct the unit by yourself.

● Please ask your sales agent or qualifi ed technician for the installation of your unit. Water

leakage, short circuit or fi re may occur if you install the unit by yourself.

!

WARNING

!

CAUTION

● Please use earth line.

Do not place the earth line near water or gas pipes, lightning-conductor, or the earth

line of telephone. Improper installation of earth line may cause electric shock.

● Be sure to use the specifi ed piping set for R410A. Otherwise, this may result in broken

copper pipes or faults.

● A circuit breaker should be installed depending on the mounting site of the unit. Without

a circuit breaker, the danger of electric shock exists.

● Do not install near location where there is fl ammable gas. The outdoor unit may catch

fi re if fl ammable gas leaks around it.

● Please ensure smooth fl ow of water when installing the drain hose.

● Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its

mist fl ows to the indoor unit. The oil will deposit on the heat exchanger, thereby reducing
the indoor unit performance and may deform and in the worst case, break the plastic
parts of the indoor unit.

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

● Should abnormal situation arises (like burning smell), please stop operating the unit and turn

!

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off the circuit breaker. Contact your agent. Fault, short circuit or fi re may occur if you continue
to operate the unit under abnormal situation.

● Please contact your agent for maintenance. Improper self maintenance may cause electric

shock and fi re.

● Please contact your agent if you need to remove and reinstall the unit. Electric shock or fi re

may occur if you remove and reinstall the unit yourself improperly.

● If the supply cord is damaged, it must be replaced by the special cord obtainable at

authorized service/parts centers.

The sign in the fi gure indicates prohibition.

PRECAUTIONS DURING OPERATION

● Avoid an extended period of direct air fl ow for your health.

!

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● Do not use any conductor as fuse wire, this could cause fatal accident.

I

●

Spray cans and other combustibles should not be located within a meter of the air outlets

of both indoor and outdoor units.

As a spray can’s internal pressure can be increased by hot air, a rupture may result.

● Do not insert a fi nger, a rod or other objects into the air outlet or inlet. As the fan is rotating

at a high speed, it will cause injury. Before cleaning, be sure to stop the operation and turn
the breaker OFF.

●

During thunder storm, disconnect and turn off the circuit breaker.

– 2 –

PRECAUTIONS DURING OPERATION

● The product shall be operated under the manufacturer specifi cation and

not for any other intended use.

● Do not attempt to operate the unit with wet hands, this could cause fatal

accident.

● When operating the unit with burning equipments, regularly ventilate the

room to avoid oxygen insuffi ciency.

● Do not direct the cool air coming out from the air-conditioner panel to face

household heating apparatus as this may affect the working of apparatus
such as the electric kettle, oven etc.

● Please ensure that outdoor mounting frame is always stable, fi rm and

without defect. If not, the outdoor unit may collapse and cause danger.

● Do not splash or direct water to the body of the unit when cleaning it as

this may cause short circuit.

● Do not use any aerosol or hair sprays near the indoor unit. This chemical

can adhere on heat exchanger fi n and blocked the evaporation water fl ow

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to drain pan. The water will drop on tangential fan and cause water splashing

out from indoor unit.

● Please switch off the unit and turn off the circuit breaker during cleaning,

the high-speed fan inside the unit may cause danger.

I

● Turn off the circuit breaker if the unit is not to be operated for a long period.

● Do not climb on the outdoor unit or put objects on it.

● Do not put water container (like vase) on the indoor unit to avoid water

dripping into the unit. Dripping water will damage the insulator inside the
unit and causes short-circuit.

● Do not place plants directly under the air fl ow as it is bad for the plants.

● When operating the unit with the door and windows opened, (the room humidity is always above

80%) and with the air defl ector facing down or moving automatically for a long period of time,
water will condense on the air defl ector and drips down occasionally. This will wet your furniture.
Therefore, do not operate under such condition for a long time.

● If the amount of heat in the room is above the cooling or heating capability of the unit (for

example: more people entering the room, using heating equipments and etc.), the preset room
temperature cannot be achieved.

●

This appliance is not intended for use by young children or infi rm persons unless they have been
adequately supervised by a responsible person to ensure that they can use the appliance safely.

● Young children should be supervised to ensure that they do not play with the appliance.

– 3 –

NAMES AND FUNCTIONS OF EACH PART

INDOOR UNIT

Pre-fi lter

To prevent dust from coming into the indoor unit.
(Refer page 35)

Front panel

Indoor unit indicators

Light indicator showing the operating condition.
(Refer page 5)

Horizontal defl ector
(Air Outlet)

Remote controller

Send out operation signal to the indoor unit. So as
to operate the whole unit.
(Refer page 8-9)

●

Vertical defl ector

NOTE

● Air purifying fi lters are not washable. It is recommended to use vacuum to clean it. It can be use

for 1 year time. Type number for this air purifying fi lter is <SPX-CFH22>. Please use this number
for ordering when you want to replace it.

MODEL NAME AND DIMENSIONS

DEPTH (mm)

230

RAK-18NHA2/RAK-25NHA2/RAK-35NHA2/RAK-50NHA2

WIDTH (mm)MODEL HEIGHT (mm)

790

300

– 4 –

INDOOR UNIT INDICATORS

FILTER LAMP

When the device is operated for a total of about 200
hours, the FILTER lamp lights to indicate that it is time
to clean the fi lter. The lamp goes out when the “
(AUTO SWING)” button is pressed while the device is on
“STANDBY MODE”.

OPERATION LAMP

This lamp lights during operation.
The OPERATION LAMP fl ashes in the following cases
during heating.

(1) During preheating

For about 2–3 minutes after starting up.

(2) During defrosting

Defrosting will be performed about once every one

hour when frost forms on the heat exchanger of the
outdoor unit, for 5–10 minutes each time.

TIMER LAMP

This lamp lights when the timer is working.

OPERATION INDICATOR

TEMPORARY SWITCH

Use this switch to start and stop when the remote controller does not work.

● By pressing the temporary switch, the operation is done in automatic mode.

● When the operation is done using the temporary switch after the power source is turned off and turn

on again, the operation is done in automatic mode.

– 5 –

PREPARATION BEFORE OPERATION

■ To install the batteries

1. Slide the cover to take it off.

2. Install two dry batteries AAA.LR03 (alkaline).
The direction of the batteries should match the

marks in the case.

3. Replace the cover at its original position.

■ To fi x the remote controller holder to the wall

1. Choose a place from where the signals can reach the unit.

2. Fix the remote controller holder to a wall, a pillar or similar
location with the provided screws.

3. Place the remote controller in the remote controller holder.

Remote controller

NOTE

Notes on batteries

● When replacing the batteries, use batteries of the same

type, and replace both old batteries together.

● When the system is not used for a long time, take the

batteries out.

● The batteries will last for approximately 1 year. However, if

the remote controller display begins to fade and degradation
of reception performance occurs within a year, replace both
batteries with new size AAA.LR03 (alkaline).

● The attached batteries are provided for the initial use of

the system.

The usable period of the batteries may be short depending

on the manufactured date of the air conditioner.

Notes on the remote controller

● Never expose the remote controller to direct sunlight.

● Dust on the signal transmitter or receiver will reduce the

sensitivity. Wipe off dust with soft cloth.

● Signal communication may be disabled if an electronic-

starter-type fl uorescent lamp (such as inverter-type lamps)
is in the room. Consult the shop if that is the case.

● If the remote controller signals happen to operate another

appliance, move that appliance to somewhere else, or
consult the service shop.

● When the remote controller is not in use, please close the

slide cover to prevent failure.

Remote

Screws

controller holder

– 6 –

PREPARATION BEFORE OPERATION

1. Press (RESET) button when fi rst time setting.

■ To set calendar and clock

"Year" blinks.

2. Press

3. Press
blink.

4. Press
month.

5. Press

6. Press
time.

7. Press

Calendar and clock are set.

To modify the calendar and clock, press
button.
Then follow steps 1 to 7.

Calendar and clock need to be set again after changing
batteries.

(TIME) button to set the current year.

(CLOCK) button. "Day" and "Month"

(TIME) button to set the current day and

(CLOCK) button. "CLOCK" blinks.

(TIME) button to set the clock to the current

(CLOCK) button.

(CLOCK)

After changing the batteries,

1. Press (RESET) button.

2. Direct remote controller towards indoor unit and press

(INFO) button.

3. The calendar and clock from indoor unit will be transmitted.

■ Calendar and clock will not be transmitted from indoor
unit when the following occurs:

● When there is a power failure.

● When breaker is OFF by user (unit is not in STANDBY

MODE).

NOTE

Note on setting the calendar and clock.

● If the calendar and clock are not set, the ON-timer, OFF-timer and Weekly Timer cannot be set.

● If the calendar and clock are not set correctly, the ON-timer, OFF-timer and Weekly Timer will not

operate correctly.

● When the ON-timer, OFF-timer and Weekly Timer are set, the calendar and clock cannot be changed.

If there is a need to change the calendar and clock, ON-timer, OFF-timer and Weekly Timer need to
be cancelled.

– 7 –

NAMES AND FUNCTIONS OF REMOTE CONTROLLER

REMOTE CONTROLLER

● This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is

controlled electronically, the range of control may be shorter.

This unit can be fi xed on a wall using the fi xture provided. Before fi xing it, make sure the indoor unit can

be controlled from the remote controller.

● Handle the remote controller with care. Dropping it or getting it wet may compromise its signal transmission

capability.

● After new batteries are inserted into the remote controller, the unit will initially require approximately 10

seconds to respond to commands and operate.

● When remote controller is not in use for about 3 minutes during OFF condition, indicated by on the

display, the LCD will turn off.

● During clock setting, the LCD will turn off about 10 minutes later if the remote controller is not in use.

● When pressing any button, the LCD will turn on.

● The LCD will not turn off during TIMER setting.

Signal Transmitting/Receiving
Window

Point this window towards the
indoor unit when controlling it.

Sensor

A temperature sensor inside the
remote controller senses ambient
temperature around the remote­controller.

Display

This indicates the room temperature
selected, current time, timer status,
function and airfl ow rate selected.

ROOM TEMPERATURE setting Buttons

Press these buttons to set the room
temperature.

Press the [ ] button to raise the room
temperature.

Press the [

] button to lower the room

temperature.

Keep pressing and the value will change
more quickly.

Transmission sign

The transmission sign lights up
when a signal is sent.

START/STOP button

Press this button to start
operation. Press it again to stop
operation.

FAN SPEED selector Button

This determines the fan speed.

Every time you press this button,

the airfl ow rate will change from

(AUTO) ➞ (HIGH) ➞

(MED) ➞ (LOW) ➞

(SILENT) (This button allows

selection of optimal or preferred fan

speed for each operation mode).

ECO Button

Use this button to set the ECO
mode. (

p. 17)

– 8 –

NAMES AND FUNCTIONS OF REMOTE CONTROLLER

POWERFUL Button

Use this button to set the
POWERFUL mode. ( p. 15)

INFORMATION Button

p. 29)

(

ONE TOUCH CLEAN Button

p. 19)

(

LEAVE HOME Button

( p. 18)

ECO SLEEP TIMER Button

Use this button to set the ECO
sleep timer. (

p. 21)

ON / OFF TIMER setting Buttons

(

p. 20)

MODE selector Button

Use this button to select the
operating mode. Every time you
press this button, the mode will
change from
(HEAT) ➞

(AUTO) ➞

(DEHUMIDIFY)
➞ (COOL) and ➞ (FAN)
cyclically.

SILENT Button

Use this button to set the SILENT
mode. ( p. 16)

AUTO SWING (Vertical) Button

Controls the angle of the
horizontal air defl ector. (

p. 14)

AUTO SWING (Horizontal) Button

Controls the angle of the vertical
air defl ector. (

p. 14)

WEEKLY TIMER setting Buttons

(

p. 23)

MODE SELECTOR
AUTO
HEAT
DEHUMIDIFY
COOL
FAN

FAN SPEED
AUTO
SILENT
LOW
MED
HIGH

START / STOP

ECO

FAN

POWERFUL

SILENT

INFO

SLEEP TIMER

AUTO SWING (VERTICAL)

AUTO SWING (HORIZONTAL)

LEAVE HOME

CLEAN

DAY

PROGRAM NO.

ON / OFF TIMER

TIME

OK

DELETE

COPY / PASTE

CANCEL

SEND

CLOCK

Precautions for Use

●

Do not put the remote controller in the following places.

●

Under direct sunlight.

● In the vicinity of a heater.

●

Handle the remote controller carefully. Do not drop it on the fl oor, and protect it from water.

●

Once the outdoor unit stops, it will not restart for about 3 minutes (unless you turn the power switch

off and on or unplug the power cord and plug it in again).

This is to protect the device and does not indicate a failure.

●

If you press the MODE selector button during operation, the device may stop for about 3 minutes for

protection.

– 9 –

VARIOUS FUNCTIONS

■ Auto Restart Control

● If there is a power failure, operation will be automatically restarted when the power is resumed with previous operation

mode and airfl ow direction.

(As the operation is not stopped by remote controller.)

● If you intend not to continue the operation when the power is resumed, switch off the power supply.

When you switch on the circuit breaker, the operation will be automatically restarted with previous operation mode

and airfl ow direction.

Note: 1. If you do not require Auto Restart Control, please consult your sales agent.

2. Auto Restart Control is not available when Timer or Sleep Timer mode is set.

AUTOMATIC OPERATION

The device will automatically determine the mode of operation, HEAT or COOL depending on the current
room temperature. The selected mode of operation will change when the room temperature varies.
However, the mode of operation will not change when indoor unit is connected to multi type outdoor unit.

Press the MODE selector button so that the display indicates the
(AUTO) mode of operation.

● When AUTO has been selected, the device will automatically

1

determine the mode of operation, HEAT or COOL depending on
the current room temperature. However the mode of operation will
not change when indoor unit is connected to multi type outdoor
unit.

● If the mode automatically selected by the unit is not satisfactory,
manually change the mode setting (HEAT, DEHUMIDIFY, COOL
or FAN).

Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting).

(AUTO) (HIGH) (MED)

2

3

START

STOP

■ As the settings are stored in the memory of the remote controller, you

Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).
The temperature setting and the actual room temperature may vary
depending on conditions.

Press the
Operation starts with a beep.
Press the button again to stop operation.

only have to press the

(START/STOP) button.

(SILENT) (LOW)

(START/STOP) button next time.

Press the (FAN SPEED) button to select AUTO, HIGH, MED, LOW
or SILENT.

– 10 –

HEATING OPERATION

● Use the device for heating when the outdoor temperature is under 21°C.

When it is too warm (over 21°C), the heating function may not work in order to protect the device.

● In order to maintain reliability of the device, please use this device when outdoor temperature is above

–15°C.

Press the MODE selector button so that the display indicates

1

(HEAT).

Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).

2

3

START

STOP

■ As the settings are stored in the memory of the remote controller, you
only have to press the

■ During AUTO fan, the fan speed automatically changes as below:

● When the difference between room temperature and setting temperature

● After room temperature reaches the preset temperature, fan speed

(AUTO) (HIGH) (MED)

Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).

The temperature setting and the actual room temperature may
vary depending on conditions.

Press the
a beep. Press the button again to stop operation.

is large, fan starts to run at HI speed.

will be changed to lower speed to obtain optimum room temperature
condition for natural healthy heating.

(START/STOP) button. Heating operation starts with

(SILENT) (LOW)

(START/STOP) button next time.

Defrosting

Defrosting will be performed about once an hour when frost forms on the heat exchange of the outdoor unit,
for 5~10 minutes each time.
During defrosting operation, the operation lamp blinks in a cycle of 3 seconds on and 0.5 second off.
The maximum time for defrosting is 20 minutes.
However, if the indoor unit is connected to multi type outdoor unit, the maximum time for defrosting is 15
minutes.
(If the piping length used is longer than usual, frost is likely to form.)

– 11 –

DEHUMIDIFYING OPERATION

Use the device for dehumidifying when the room temperature is over 16°C.
When it is under 15°C, the dehumidifying function will not work.

Press the MODE selector button so that the display indicates

1

(DEHUMIDIFY).
The fan speed is set at LOW.
Press (FAN SPEED) button to select SILENT or LOW fan
speed.

Set the desired room temperature with the ROOM TEMPERATURE
setting buttons (the display indicates the setting).

2

START

STOP

■ As the settings are stored in the memory of the remote controller, you

Press the (START/STOP) button. Dehumidifying operation
starts with a beep. Press the button again to stop operation.

only have to press the

The range of 20-26˚C is recommended as the
room temperature for dehumidifying.

(START/STOP) button next time.

■ Dehumidifying Function

● When the room temperature is higher than the temperature setting: The device will dehumidify the room,

reducing the room temperature to the preset level.

When the room temperature is lower than the temperature setting: Dehumidifying will be performed at the

temperature setting slightly lower than the current room temperature, regardless of the temperature setting.

● The preset room temperature may not be reached depending on the number of people present in the room

or other room conditions.

– 12 –

COOLING OPERATION

Use the device for cooling when the outdoor temperature is -10~ 43°C.
If indoors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.

1

2

Press the MODE selector button so that the display indicates
(COOL).

Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting).

(AUTO) (HIGH) (MED)

Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).

(SILENT) (LOW)

3

The temperature setting and the actual room temperature may vary
depending on conditions.

Press the
beep. Press the button again to stop operation. The cooling function

START

STOP

■ As the settings are stored in the memory of the remote controller, you

■ During AUTO fan, the fan speed automatically changes as below:

● After room temperature reaches the preset temperature, fan speed

does not start if the temperature setting is higher than the current
room temperature (even though the (OPERATION) lamp lights).
The cooling function will start as soon as user set the temperature
below the current room temperature.

only have to press the

● When the difference between room temperature and setting

temperature is large, fan starts to run at HI speed.

will be changed to lower speed to obtain optimum room temperature
condition for natural healthy cooling.

(START/STOP) button. Cooling operation starts with a

(START/STOP) button next time.

– 13 –

FAN OPERATION

User can use the device simply as an air circulator.

Press the MODE selector so that the display indicates

1

2

START

STOP

(FAN).

Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting).

(HIGH) (MED) (LOW) (SILENT)

Press the (START/STOP) button. Fan operation starts with
a beep. Press the button again to stop operation.

AUTO SWING OPERATION

VERTICAL SWING

■ To start Vertical Auto Swing

● Press (AUTO SWING (VERTICAL)) button. The defl ector(s) will start

to swing up and down.

is displayed on the LCD.

■ To cancel Vertical Auto Swing

● Press (AUTO SWING (VERTICAL)) button again. The defl ector(s) will

stop in the current position.

disappeared from the LCD.

HORIZONTAL SWING

■ To start Horizontal Auto Swing

● Press (AUTO SWING (HORIZONTAL)) button. The defl ectors will

start to swing right and left.

is displayed on the LCD.

■ To cancel Horizontal Auto Swing

● Press (AUTO SWING (HORIZONTAL)) button again. The defl ectors

will stop in the current position.

disappeared from the LCD.

NOTE

● During cooling and dehumidifying operation, do not keep the defl ectors swinging or in the lower position

(in the case of vertical auto swing) for a long time. It may cause dew condensation on the defl ectors.

– 14 –

POWERFUL OPERATION

● By pressing (POWERFUL) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN

operation, the air conditioner performs at the maximum power.

● During POWERFUL operation, cooler or warmer air will be blown out from indoor unit for COOLING or

HEATING operation respectively.

■ To start POWERFUL operation

● Press (POWERFUL) button during operation.

“ ” is displayed on the LCD.

1

POWERFUL operation ends in 20 minutes. Then the system

automatically operates with the previous settings used before
POWERFUL operation.

■ To cancel POWERFUL operation

● Press the (START/STOP) button. Or

● Press (POWERFUL) button again.

POWERFUL operation stops.

“ ” disappears from the LCD.

NOTE

● When SLEEP mode, ECO mode, SILENT mode or LEAVE HOME mode is selected, POWERFUL

operation is cancelled.

● During POWERFUL operation, capacity of the air conditioner will not increase

– if the air conditioner is already running at maximum capacity.
– just before defrost operation (when the air conditioner is running in HEATING operation).

● After auto restart, POWERFUL operation is cancelled and previous operation shall start.

● For multi model connections, POWERFUL operation may not function depending on operation conditions.

– 15 –

SILENT OPERATION

● By pressing (SILENT) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN

operation, the fan speed will change to ultra slow.

■ To start SILENT operation

● Press (SILENT) button during operation.

1

“

■ To cancel SILENT operation

● Press (START/STOP) button. Or

● Press (SILENT) button again or (FAN SPEED)

button.

Fan speed will return to previous fan speed before SILENT

operation starts.

SILENT operation stops.

” is displayed on the LCD. Fan speed will be ultra slow.

“ ” disappears from the LCD.

NOTE

● When POWERFUL operation is selected, SILENT operation is cancelled. Fan speed will return to

previous fan speed before SILENT operation.

● After auto restart, SILENT operation is cancelled. Fan speed will return to previous fan speed before

SILENT operation.

● During any operation with fan speed (SILENT), if press (SILENT) button, fan speed will

not change.

– 16 –

ECO OPERATION

ECO operation is an energy saving function by changing set temperature automatically and by limiting the
maximum power consumption value.

● By pressing the (ECO) button during AUTO, HEATING,

1

■ To start ECO operation

● Press (ECO) button during operation.

DEHUMIDIFYING or COOLING operation, the air conditioner

performs the "ECO" operation.

“

Energy saving operation will start by changing the set temperature

” is displayed on the LCD.

higher or lower automatically and reducing operation power
consumption. This function may vary based on the connected
outdoor unit.

■ To cancel ECO operation

● Press (START/STOP) button. Or

● Press (ECO) button again.

“ ” disappears from the LCD.

NOTE

● ECO function will not be effective when power consumption is low.

● By pressing (POWERFUL) button, ECO operation is cancelled.

● After auto restart, ECO operation is cancelled and previous operation mode shall start.

● For multi model connections, energy saving operation shall start only by changing set temperature higher

or lower automatically. However, effectiveness of ECO depends on operation conditions.

– 17 –

LEAVE HOME(LH) OPERATION

Prevent the room temperature from falling too much by setting temperature 10°C automatically when no one is at home.

This operation is able to operate by "Continuous operation" or "Day timer operation". Please use "Day timer operation" to
set the number of days up to 99 days.

Continuous operation

Day timer operation

■ To start LEAVE HOME operation

Option 1. Continuous operation.

● Press (LEAVE HOME) button during stop or operation.

Room temperature is set at 10°C and heating operation starts.

1

“

Option 2. Day timer operation.

● Press (LEAVE HOME) button during stop or operation.

Room temperature is set at 10°C and heating operation starts.

“ ”, “ ”, “ ”, “ ” is displayed on the LCD.

● Set number of operation days (1 to 99 days), if needed.

Press

Number of days blink.

* Press “

* Press “

* Number of day is counted when clock indicates 0:00.

● Press (SEND) button to confi rm number of operation

● Press (CANCEL) button to reset number of operation

”, “ ”, “ ”, “ ” is displayed on the LCD.

(TIME) button to select number of days.

(UP)” to set number of days from 1 day, 2 days, 3

days ..... 98 days, 99 days, 1 day and so on.

(DOWN)” to set number of days from 99 days, 98

days, 97 days .... 3 days, 2 days, 1 day, 99 days and so on.

days. Display for number of operation days will stop blinking.

days or to have continuous operation.

■ To cancel LEAVE HOME operation

● Press (START/STOP) button. Or

● Press (LEAVE HOME) button again.

Return to previous operation mode. Or

● Change to other operation mode by pressing (MODE) button.

NOTE

● After reaching the set number of operation days for Leave Home or by pressing the (Leave Home) button again,

the unit will operate in previous mode.

● During Leave Home operation, fan speed and horizontal air defl ector position cannot be changed.

● By pressing (Leave Home) button, implementation of Weekly Timer or Once Timer is cancelled.

● In case of power supply shut down, after autorestart, all setting for number of days operation will be reset and unit

shall be in continuous operation.

● For multi connections, when each room is running in different operation modes such as FAN only, COOLING,

DEHUMIDIFYING or AUTO mode, Leave Home operation cannot operate even though it is possible to set Leave
Home operation.

In order to start Leave Home operation, all rooms must stop its operation. Then, press (LEAVE HOME) button to

operate Leave Home operation.

● For multi connections, when all rooms are running HEATING operation, it is possible to operate Leave Home operation

by pressing the (LEAVE HOME) button.

● For multi connections, if two or more rooms are set to operate Leave Home operation, the capability to reach the

set temperature at 10°C may not possible. In addition, this also depends on outdoor temperature.

● POWERFUL, SILENT and ECO operations are not applicable during Leave Home operation.

– 18 –

CLEAN (ONE TOUCH CLEAN) OPERATION

Drying indoor heat exchanger after cooling operation to prevent mildew.

■ To start CLEAN operation

● Press (CLEAN) button when unit is OFF.

Total time taken for One Touch Clean operation is 60 minutes.

During this operation, HEATING or FAN operation shall

1

● Press (START/STOP) button. Or

● Press (CLEAN) button again.

operate.

During one touch clean, operation lamp is blinking.

“ ”, “ ” is displayed on the LCD.

■ To cancel CLEAN operation

NOTE

● When CLEAN operation fi nish, unit will switch OFF automatically.

● If Weekly Timer or Once Timer is set, there is a need to cancel those timer before operating CLEAN

function.

● For multi connections, when pressing (CLEAN) button, operation is limited to FAN operation.

● For multi connections, when one room operates CLEAN operation fi rst, other rooms can operate

COOLING, DEHUMIDIFYING or FAN operation. However, when other rooms need to operate HEATING
operation, air conditioner will be in STANDBY mode. After CLEAN operation fi nish, HEATING operation
will start.

– 19 –

ONCE TIMER (ON/OFF TIMER) OPERATION

OFF TIMER

The device can be set to turn off at a preset time.

1. Press

(OFF-TIMER) button. and blink on the display.

2. Set the "turn-off time" with

1

3. After setting, direct the remote controller towards the indoor and press
(SEND) button.

A beep sound emitted from indoor unit and the (TIMER) lamp on the

ON TIMER

The device will turn on at a designated time.

1. Press

2. Set the "turn-on time" with

3. After setting, direct the remote controller towards the indoor and press
(SEND) button.

A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor

unit lights up.

ON/OFF TIMER

● The device will turn on (off) and off (on) at the designated time.

● The switching occurs fi rst at the preset time that comes earlier.

● The arrow mark appears on the display to indicate the sequence of switching

operations.

1. Press
display.

2. Set the "turn-off" time with
controller towards the indoor and press

3. Press

The

and "set time" lights up instead of blinking.

indoor unit lights up.

(ON-TIMER) button. and blink on the display.

and "set time" light up instead of blinking.

(OFF-TIMER) button so that and blink on the

(ON-TIMER) button so that and set "turn-off" time light up.

and blink.

(TIME) button.

(TIME) button.

(TIME) button. After setting, direct the remote

(SEND) button.

■ To cancel Reservation

● Point the signal window of the remote controller towards the indoor unit and press (CANCEL) button.

and "ON or OFF set time" goes out with a beep and the (TIMER) lamp on the indoor unit turns off.

NOTE

● User can set only one of the OFF-timer, ON-timer or ON/OFF-timer.

● If WEEKLY TIMER already set, by setting the ONCE TIMER, ONCE TIMER operation is prioritized. When ONCE

TIMER operation is complete, WEEKLY TIMER operation will be activated.

4. Set the "turn-on" time with

5. After setting, direct the remote controller towards the indoor and press

(SEND) button

A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor

and set "turn-on" time light up instead of blinking.

unit lights up.

(TIME) button.

■ The timer may be used in three ways: OFF-timer, ON-timer and ON/OFF (OFF/

ON)-timer. Set the current time fi rst because it serves as a reference.

– 20 –

ECO SLEEP TIMER OPERATION

The timer can be set up to a duration of 7 hours.

By pressing

the unit shifts the room temperature and reduces the fan speed. It results in energy saving.
Set the current time fi rst before operating the ECO SLEEP TIMER operation.

(SLEEP) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation,

■ To start ECO SLEEP TIMER operation

Press (SLEEP) button during operation.

● “ ”, “ ”, “ ”, “OFF”, off time, “ ” and number

of hour are displayed on the remote controller display.

● During ECO SLEEP TIMER operation, fan speed will be ultra

slow.

● A beep sound emitted from indoor unit and the (TIMER) lamp

1

on the indoor unit lights up.

Pressing (SLEEP) button repeatedly, the number of hours

will change as below:

● During ECO SLEEP TIMER operation, air conditioner will

continue to operate for the designated number of hours and
then turn off.

● When the ECO SLEEP TIMER has been set, the display on

the remote controller indicates the turn off time.

1 H 2 H 3 H 7 H

SLEEP TIMER off

Example: If ECO SLEEP TIMER is
set for 1 hour at 18:00, the switch
off time will be at 19:00.

■ To cancel ECO SLEEP TIMER operation

Press

● Room air conditioner will switch off.

Press

off time, “

controller display.

Press

● A beep sound emitted from indoor unit and the (TIMER) lamp

on the indoor unit turns off.

● SLEEP TIMER operation is cancelled.

(START/STOP) button.

(SLEEP) button again until “ ”, “ ”, “ ”,

” and number of hour disappear from the remote

(CANCEL) button.

– 21 –

ECO SLEEP TIMER OPERATION

■ To set ECO SLEEP TIMER and ON TIMER

The air conditioner will be turned off by ECO SLEEP TIMER and turned on by ON TIMER.

1. Set the ON TIMER.

2. Press

(SLEEP) button and set ECO SLEEP TIMER.

Example:
In this case, air conditioner will turn off in 2 hours (at 1:38) and it will be
turned on at 6:00 the next morning.

■ To cancel ECO SLEEP TIMER and ON TIMER operation

Direct the remote controller towards the indoor unit and press

● “ ”, “ ”, “ ”, “OFF”, off time, “ ”, number of hour, "ON" and ON TIMER set time disappear

from the remote controller display.

● A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor unit turns off.

● ECO SLEEP TIMER and ON TIMER reservations are cancelled.

30 minutes after setting ECO SLEEP TIMER, outdoor fan speed will be reduced to lower the noise level and
to have comfort operation.
1 hour after setting ECO SLEEP TIMER, set temperature will be slightly shifted. Amount of temperature shifted
depends on type of air conditioner.
These automatic operation changes contribute to energy saving without losing comfort.
The level of energy consumption depends on outside temperature, room temperature, set temperature or air
conditioner type.

(CANCEL) button.

Cooling operation [diagram representation
for illustrative purpose only]

Temperature

Outdoor fan

speed reduce

30 minutes

Shift

temperature

1 hour

Heating operation [diagram representation for
illustrative purpose only]

Temperature

Outdoor fan

speed reduce

30 minutes

Shift

temperature

1 hour

NOTE

● If ECO SLEEP TIMER is set when OFF TIMER or ON/OFF TIMER has been set earlier, the ECO

SLEEP TIMER becomes effective instead of the OFF TIMER or ON/OFF TIMER.

– 22 –

WEEKLY TIMER OPERATION

● It is possible to select Mode A or Mode B. For each mode, up to 6 programs can be set per day. In total, a

maximum of 42 programs can be set for a week for each mode.

● If calendar and clock are not set, the reservation setting for WEEKLY TIMER cannot be set.

● If calendar and clock are not set correctly, WEEKLY TIMER will not operate correctly.

● Reservation for calendar and clock shall be set fi rst before operating WEEKLY TIMER.

Step 1 : Set the reservation schedule to the remote controller. Send the registered reservation to indoor

unit and then operate.
Step 2 : Select Mode A or Mode B and activate or deactivate WEEKLY TIMER .
Step 3 : Copy and cancel the reservation schedule.

Step 1 : Set reservation schedule to the remote controller. Send the registered

reservation to indoor unit and then operate.

■ How to set a WEEKLY TIMER.

1. Select Mode A or Mode B

1

Press (WEEKLY) button. lights up. and blink on the

2

display. (Mode A is selected).

Press (WEEKLY) button again, and blink on the display.

(Mode B is selected).

● If no reservation has been made, ON/OFF, , appear.

● If reservation has been made, ON/OFF, , will not
appear.

2. Set a program

Press (WEEKLY) button for about 3 seconds. The selection mode

can be changed.

, day: Mon, program no. : 1, ON/OFF, setting time and setting

temperature blink on the display.

3. Select the desired day of the week

Press (DAY) button.

3

4

The day changes from Mon

Mon, Tue, Wed, Thu, Fri, Sat, Sun [Full days] Mon, Tue, Wed, Thu,

Fri [weekday] Sat, Sun [weekend] Mon Tue ......

Select [Full days] for daily reservation.
Select [weekday] for Monday to Friday reservation.
Select [weekend] for Saturday and Sunday reservation.

● After reservation has been set, it is easy to check and edit at the same

time.

4. Press

The number changes from 1

● If program number has been set, follow above in order to make
changes.

button to select a program number.

Tue Wed Thu Fri Sat Sun

2 3 4 5 6 1 2 .....

– 23 –

WEEKLY TIMER OPERATION

5. Press

reservation.

(ON-OFF TIMER) button to select ON TIMER or OFF TIMER

5

6. Press

7. Press (TEMP or ) button to set temperature reservation.

8. Press (OK) button. The reservations are set. Day, program
number, ON reservation, setting temperature will light up. will be
continuously blinks. If reservation is not complete, settings will not be

6

7

8

stored in memory.

To continue with the reservation, press buttons.
Follow step 3 to 8 for reservation.

9. After all the reservations have been set, press (SEND) button
while directing the remote controller towards the indoor unit for about 3
seconds. Timer lamp on the indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.
Please ensure that the TIMER lamp lights up.

This indicates that the reservation has been stored in the indoor unit and

Timer function has been completed.

The reservation contents will appear on the remote controller display.

● If TIMER lamp on the indoor unit does not light up, press (SEND)

button while directing the remote controller towards the indoor unit for
about 3 seconds.

● CAUTION ! Do not press (CANCEL) button during reservation

setting because this will result in all reservation contents to be lost.

(TIME) button to set time reservation.

● The reservation contents will not stored in the indoor unit until

(SEND) button has been pressed.

9

NOTE

● Up to 6 programs can be set per day. Setting ON TIMER or OFF TIMER for each program number

can be at random. When pressing (SEND) button, the set ON TIMER or OFF TIMER for each
program number will automatically arranged so that program number 1 shall have the earliest time and
program number 6 shall have the latest time.

If the setting time is the same, Priority will be given to the latest reservation contents.

● CAUTION ! If the remote controller is left idle and (SEND) button is not pressed within 3 minutes

after reservations have been made , all current reservations will be lost.

– 24 –

WEEKLY TIMER OPERATION

Step 2: Select Mode A or Mode B and activate or deactivate WEEKLY TIMER.

■ How to select Mode A or Mode B of WEEKLY TIMER setting.

1

1. Press

2

(Normally Mode A will blink fi rst).

2. Press (WEEKLY) button again. and blink on the display.

3. Select Mode A or Mode B. Press (SEND) button while directing
the remote controller towards the indoor unit for about 3 seconds. Timer
lamp on the indoor unit will blink rapidly.

(WEEKLY) button. and blink on the display.

3

1

After beep sound emitted from indoor unit, TIMER lamp will light up.
Please ensure that the TIMER lamp lights up.

This indicates that Mode A or Mode B selection and active WEEKLY

TIMER have been confi rmed.

■ Setting non-active WEEKLY TIMER .

1. Direct the remote controller towards the indoor unit and press
(CANCEL) button.

Beep sound will be emitted from indoor unit and TIMER lamp will be OFF.

Reservation indication on remote display will also disappear.

This indicates that non-active WEEKLY TIMER has been confi rmed.

● To activate back the setting of WEEKLY TIMER , repeat the steps for

"How to select Mode A or Mode B of WEEKLY TIMER setting".

NOTE

● When setting ONCE TIMER, operation of WEEKLY TIMER is interrupted. After ONCE TIMER operation

is complete, WEEKLY TIMER operation will be activated.

● When ONCE TIMER is cancelled, operation of WEEKLY TIMER is also cancelled. Need to set WEEKLY

TIMER operation for activation.

● After auto restart, WEEKLY TIMER operation is cancelled. Need to set WEEKLY TIMER operation for

activation.

– 25 –

WEEKLY TIMER OPERATION

Step 3: Copy and cancel the reservation schedule.

■ How to copy and paste.

1

2

Editing the reservation schedule is easy by copying data from one day to
another day.

1. Press

2. Press (WEEKLY) button for about 3 seconds to start editing the
reservation schedule.

3

4

5

6

3. Press (DAY) button to select a day of the week to copy.

4. Press (COPY/PASTE) button. Then "PASTE" blinks on the display.

* Press

setting mode is activated.

5. Press

6. Press (COPY/PASTE) button one more time to paste. only
blinks on the display.

7. To continue copying to other days, press or or or

.

Then start from step 3.

8. After copy and paste completed, press (SEND) button while
directing the remote controller towards the indoor unit for about 3
seconds. Timer lamp on the indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.
Please ensure that the TIMER lamp lights up.

If TIMER lamp does not light up, Press

(WEEKLY) button to select Mode A or Mode B.

(CANCEL) button to cancel the COPY mode. Normal

(DAY) button to select a day of the week to paste.

(SEND) button again.

8

NOTE

● If there is no reservation data, copying data from one day to another day cannot be done.

● Reservation data will not change if (SEND) button is not pressed.

– 26 –

WEEKLY TIMER OPERATION

Step 3: Copy and cancel the reservation schedule.

■ How to delete WEEKLY TIMER data.

1

[Delete one program number reservation]

2

3

4

1. Press (WEEKLY) button to select Mode A or Mode B.

2. Press (WEEKLY) button for 3 seconds to start editing the reserva-

tion schedule.

3. Press

4. Press
blink.

5. Press (DELETE) button. Reservation of selected program number

is deleted.

6. After deleting, press (SEND) button while directing the remote
controller towards the indoor unit for about 3 seconds. Timer lamp on the
indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.

Please ensure that the TIMER lamp lights up.

● Reservation will not change if (SEND) button is not pressed.

(DAY) button to select a day of the week to edit.

to select program number. Selected program number will

5

6

– 27 –

WEEKLY TIMER OPERATION

Step 3: Copy and cancel the reservation schedule.

[Delete one day reservation]

1

2

3

4

1. Press (WEEKLY) button to select Mode A or Mode B.

2. Press (WEEKLY) button for 3 seconds to start editing the

reservation schedule.

3. Press (DAY) button to select a day of the week to edit.

4. Press
program numbers will be deleted.

● If press for a short time, reservation for one program number will be

deleted.

5. After deleting, press
controller towards the indoor unit for about 3 seconds. Timer lamp on the
indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.
Please ensure that the TIMER lamp lights up.

● Reservation will not change if (SEND) button is not pressed.

(DELETE) button for about 10 seconds. Reservations for all

(SEND) button while directing the remote

5

[Delete Mode A or Mode B]

1. Press (WEEKLY) button to select Mode A or Mode B.

1

2. Direct the remote controller towards the indoor unit and press
(DELETE) button for about 10 seconds while Mode A or Mode B display
blinks.

After beep sound emitted from indoor unit, reservations for Mode A or

Mode B will disappear.

2

NOTE

● If all reservations in the remote controller were deleted and pressed (SEND) button, no signal will

be transmitted to indoor unit. TIMER lamp will remain off and no changes will be done to the reservations
stored in the indoor unit.

– 28 –

INFO FUNCTION

●

By pressing (INFO) button, temperature around remote controller and monthly power consumption will

be displayed on the remote controller.

●

After changing the batteries, direct the remote controller towards the indoor unit and press (INFO) button.

Current calendar and clock will be transmitted from indoor unit.

●

In order to receive information from indoor unit, the distance between remote controller and receiver of indoor

units is within 2 meters.

■ To check temperature around remote controller

Press (INFO) button.

1

Temperature will be displayed for 10 seconds.

■ To check monthly power consumption

Direct the remote controller towards the receiver of indoor unit (within 2
meters in front of indoor unit) and press
seconds for signal transmission.

While temperature around remote controller is displayed, press
(INFO) button repeatedly. The display will show as below:

this month power consumption amount for heating
consumption amount for heating this month power consumption amount
for cooling last month power consumption amount for cooling
temperature around remote controller this month power consumption

amount for heating ...... cyclically.

● If indication is not given, bring remote controller closer to the receiver of

the indoor unit.

● Indicated value shall be regarded as a guide only.

(INFO) button. Wait for 2

last month power

Current calendar and clock can be retrieved from indoor unit

■

Direct the remote controller towards the receiver of indoor unit (within 2
meters in front of indoor unit) and press
seconds for signal transmission.

Once received the current calendar and clock, check whether they are
correct or not by pressing

●

If there is no power supply to indoor unit or calendar and clock have not

been set, INFO function cannot be used for sending or receiving information.

(CLOCK) button.

(INFO) button. Wait for 2

NOTE

●

In case failure occurs to the air conditioner, by pressing (INFO) button, an error code will be displayed.

Direct the remote controller towards the receiver of indoor unit (within 2 meters in front of indoor unit) and

press (INFO) button. Wait for 2 seconds for signal transmission.

An error code will be displayed.
Call service center and inform the error code.

●

Information of “Monthly power consumption” are not available for model RAM-110QHA2.

●

Info Function to check monthly power consumption.

During installation, in case of power failure or breaker ON / OFF, ensure to set the clock and calendar for

each indoor unit (unit in standby mode or auto restart), for single or multi connection, by pressing (START
/ STOP) button.

Failure to do the above, monthly power consumption amount will not be displayed on the remote controller.

– 29 –

OPERATION MODE LOCK

The remote controller can be set to fi x the HEATING mode (including FAN), COOLING mode (including FAN)
and DEHUMIDIFYING mode (including FAN) operations.

■ Method to lock HEATING mode (including FAN) operation.

Press (ECO) and (POWERFUL) buttons simultaneously for about 5
seconds when the remote controller is OFF.

“

”, “ ” and “ ” will be displayed for about 10 seconds. Later, “ ” and

“ ” will remain.

This indicates that HEATING mode operation is locked.

When pressing

■ Method to unlock HEATING mode (including FAN) operation.

Press
seconds when the remote controller is OFF.

All operation mode symbols will appear on the display for about 10 seconds. After
that, operation mode symbol before cancellation will be displayed.
This indicates that HEATING mode operation is unlocked.

■ Method to lock COOLING and DEHUMIDIFYING modes (including FAN)

Press

when the remote controller is OFF.

“ ”, “ ”, “ ” and “ ” will be displayed for about 10 seconds. Later, “ ”
and “ ” will remain.

This indicates that COOLING and DEHUMIDIFYING mode operation is locked.

When pressing (MODE) button, “ ”, “ ” or “ ” will be displayed.

■ Method to unlock COOLING and DEHUMIDIFYING modes (including FAN)

(ECO) and (POWERFUL) buttons simultaneously for about 5

operations.

(ECO) and (SILENT) buttons simultaneously for about 5 seconds

operations.

(MODE) button, “ ” or “ ” will be displayed.

Press

when the remote controller is OFF.
All operation mode symbols will appear on the display for about 10 seconds. After
that, operation mode symbol before cancellation will be displayed.
This indicates that COOLING and DEHUMIDIFYING modes operation is unlocked.

NOTE

● Operation Mode Lock function will not activate if TIMER reservations activate.

TIMER reservations shall be deactivated fi rst. Then, Operation Mode Lock function can be activated.

● HEATING, COOLING and DEHUMIDIFYING mode (including FAN) operations can be unlocked by pressing

the (RESET) button. However, by pressing the (RESET) button, all the information stored
in the remote controller will disappear. You may need to set the necessary information again.

● For multi connections, unit and mode which is set to lock HEATING and switched on fi rst shall have

higher priority. Other units which are chosen to operate at different modes shall be in STANDBY until
either the fi rst unit operation is switched off or the mode is selected to be same as the fi rst unit.

(ECO) and (SILENT) buttons simultaneously for about 5 seconds

– 30 –

Note

● The recommended temperature range for safety testing should be as below:

Cooling Heating

Minimum Maximum Minimum Maximum

Indoor

Outdoor

Dry bulb °C 21 32 20 27

Wet bulb °C 15 23 12 19

Dry bulb °C 21 43 2 21

Wet bulb °C 15 26 1 15

CIRCUIT BREAKER

When you do not use the room air conditioner, set the circuit breaker to “OFF”.

– 31 –

THE IDEAL WAYS OF OPERATION

Suitable Room Temperature Install curtain or blinds

!

Warning

Freezing temperature
is bad for health and a
waste of electric power.

Ventilation Effective Usage Of Timer

Caution

!

Do not close the room for a long period
of time. Occasionally open the door and
windows
to allow the
entrance of
fresh air.

It is possible
to reduce
heat entering
the room
through
windows.

At night, please use the “OFF or ON timer
operation mode”, together with your wake
up time in the morning. This will enable you
to enjoy a comfortable room temperature.
Please use the timer effectively.

Do Not Forget To Clean The Pre-fi lter

Dusty pre-fi lter will reduce the air volume
and the cooling effi ciency. To prevent from
wasting electric energy, please clean the
fi lter every 2 weeks.

Please Adjust Suitable Temperature

For Baby And Children

Please pay attention to the room temperature
and air fl ow direction when operating the unit
for baby, children and old folks who have
diffi culty in movement.

– 32 –

FOR USER’S INFORMATION

The Air Conditioner And The Heat Source In The Room

!

Caution

If the amount of heat in the room is above the
cooling capability of the air conditioner (for
example: more people entering the room, using
heating equipments and etc.), the preset room
temperature cannot be achieved.

Not Operating For A Long Time

When the indoor unit is not to be used for a long
period of time, please switch off the power from
the mains. If the power from mains remains
“ON”, the indoor unit still consumes about 8W in
the operation control circuit even if it is in “OFF”
mode.

OFF

When Lightning Occurs

Warning

!

To protect the whole unit during lightning, please
stop operating the unit and remove the plug from
the socket.

Interference From Electrical Products

!

Caution

To avoid noise interference, please place the
indoor unit and its remote controller at least 1m
away from electrical products.

To prevent
interference,
place at least
1m away.

Inverter-type
fl uorescent
lamp.

T

TV

– 33 –

ATTACHING THE AIR PURIFYING FILTERS

CAUTION

!

Cleaning and maintenance must be carried out when fi lter lamp lights. Before cleaning, stop operation
and switch off the power supply.

Open the front panel

1

● Pull up the front panel by holding it at both sides with

both hands.

Remove the pre-fi lter

2

● Push upward to release the claws and pull out the

pre-fi lter.

Attaching the air purifying fi lters

3

● Attach the air purifying fi lters to the frame by gently

compress its both sides and release after insertion
into pre-fi lter frame.

CAUTION

!

Do not bend the air purifying
fi lter as it may cause damage
to the structure.

Please do not smell direct from
source of fi lter.

Attach the pre-fi lters

4

● Attach the pre-fi lters by ensuring that the surface written

“FRONT” is facing front.

● After attaching the pre-fi lters, push the front panel at

three arrow portions as shown in fi gure and close it.

NOTE

● In case of removing the air purifying fi lters, please follow the above procedures.

● The cooling capacity is slightly weakened and the cooling speed becomes slower when the air purifying

fi lters are used. So, set the fan speed to "HIGH" when using it in this condition.

● Do not operate the air conditioner without pre-fi lter. Dust may enter the air conditioner and fault may

occur.

– 34 –

MAINTENANCE

!

CAUTION

Cleaning and maintenance must be carried out when fi lter lamp lights. Before cleaning, stop operation and
switch off the power supply.

1. PRE-FILTER

Clean the pre-fi lter, as it removes dust inside the room. In case the pre-fi lter is full of dust, the air fl ow
will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean the
pre-fi lter following the procedure below.

PROCEDURE

Open the front panel and remove the pre-fi lter

1

● Gently lift and remove the air purifying fi lters

from the pre-fi lter frame.

Vacuum dust from the pre-fi lter and air purifying

2

fi lter using vacuum cleaner. If there is too much
dust, rinse under running tap water and gently
brush it with soft bristle brush. Allow pre-fi lters to
dry in shade.

● Re-insert the air purifying fi lter to the pre-fi lter

3

!

● Do not wash with hot water at more than 40°C. The pre-fi lter may shrink.

● When washing it, shake off moisture completely and dry it in the shade; do not expose it directly to the

sun. The pre-fi lter may shrink.

frame. Set the pre-fi lter with “FRONT” mark
facing front, and slot them into the original state.

● After attaching the pre-fi lters, push the front

panel at three arrow portions as shown in fi gure
and close it.

CAUTION

– 35 –

2. Washable Front Panel

!

● Remove the front panel and wash with clean water.

Wash it with a soft sponge.
After using neutral detergent, wash thoroughly with
clean water.

● When front panel is not removed, wipe it with a soft

dry cloth. Wipe the remote controller thoroughly with
a soft dry cloth.

● Wipe the water thoroughly.

If water remains at indicators or signal receiver of
indoor unit, it causes trouble.

Method of removing the front panel.
Be sure to hold the front panel with both hands to
detach and attach it.

Removing the Front Panel

● When the front panel is fully opened with both

hands, push the right arm to the outside to
release it, and while closing the front panel

● Move the projections of the left and right arms

Attaching the Front Panel

into the Flanges in the unit and securely insert
them into the holes.

slightly, pull it out forward.

CAUTION

● Do not splash or direct water to the body of the unit when cleaning it as

this may cause short circuit.

● Never use hot water (above 40°C), benzine, gasoline, acid, thinner or a

brush, because they will damage the plastic surface and the coating.

Projection

Hole

Flange

– 36 –

CAUTION

!

Cleaning and maintenance must be carried out only by qualifi ed service personnel. Before cleaning, stop
operation and switch off the power supply.

3. MAINTENANCE BEFORE LONG OFF PERIOD

● Run the unit by setting the operation mode to (COOL),

the temperature to 32°C and the fan speed to HI for about
half a day on a fi ne day, and dry the whole of the unit.

● Switch off the power plug.

Air

Blow

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONNEL EITHER
EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.

1

2

3

Confi rm

Is the earth line disconnected or broken?

Is the mounting frame seriously affected by rust and is the out­door unit tilted or unstable?

Is the plug of power line fi rmly plugged into the socket?
(Please ensure no loose contact between them).

– 37 –

AFTER SALE SERVICE AND WARRANTY

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.

CONDITION CHECK THE FOLLOWING POINTS

If the remote controller is
not transmitting a signal.

Remote controller
display is dim or blank.

When it does not operate

When it does not cool well
When it does not hot well

● Do the batteries need replacement?

● Is the polarity of the inserted batteries correct?

● Is the fuse all right?

● Is the voltage extremely high or low?

● Is the circuit breaker “ON”?

● Is the setting of operation mode different from other indoor units?

● Is the pre-fi lter blocked with dust?

● Does sunlight fall directly on the outdoor unit?

● Is the air fl ow of the outdoor unit obstructed?

● Are the doors or windows opened, or is there any source of heat

in the room?

● Is the set temperature suitable?

● Are the air inlets or air outlets of indoor and outdoor units

blocked?

● Is the fan speed “LOW” or “SILENT”?

Notes

● In quiet operation or stopping the operation, the following phenomena may

occassionally occur, but they are not abnormal for the operation.
(1) Slight fl owing noise of refrigerant in the refrigerating cycle.
(2) Slight rubbing noise from the fan casing which is cooled and then

gradually warmed as operation stops.

● The odor will possibly be emitted from the room air conditioner because the

various odor, emitted by smoke, foodstuffs, cosmetics and so on, sticks to it.
So the pre-fi lter and the evaporator regularly must be cleaned to reduce the
odor.

● Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above

inspections. Inform your agent of the model of your unit, production number, date of installation. Please also
inform him regarding the fault.

● Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach the

specifi ed capacity.

NOTE:

● If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service

parts centers.

● On switching on the equipment, particularly when the room light is dimmed, a slight brightness fl uctuation

may occur. This is of no consequence.
The conditions of the local Power Supply Companies are to be observed.

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