Hitachi RAS-S18H2AA, RAC-S18H2AA User Manual

SPLIT TYPE AIR CONDITIONER

T ORAR SITCH

INDOOR UNIT/OUTDOOR UNIT

MODEL

RAS-S18H2AA/RAC-S18H2AA

INDOOR UNIT

RAS-S18H2AA

OUTDOOR UNIT

RAC-S18H2AA

– 1 –

●

!

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

●

Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters which, if not 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.

Make sure to connect earth line.

!

The sign in the  gure indicates prohibition.

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  re may occur if you reconstruct the unit by

yourself.

●

Please ask your sales agent or quali ed technician for the installation of your unit.

Water leakage, short circuit or  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 speci 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  ammable gas. The outdoor unit may

catch  re if  ammable gas leaks around it.

●

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

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

●

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

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

W

●

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

A

electric shock and  re.

R

●

N

Please contact your agent if you need to remove and reinstall the unit. Electric

I

shock or  re may occur if you remove and reinstall the unit yourself improperly.

N

●

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

G

obtainable at authorized service/parts centers.

PRECAUTIONS DURING OPERATION

●

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

W

A R N

I

●

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

N

G

●

Do not insert a  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 speci 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 insuf 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,  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  n and blocked the evaporation water  ow to drain pan. The water will drop on tangential fan and cause water splashing

out from indoor unit.

C A U T

I

O

●

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

N

●

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

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

●

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  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 de ector facing down or moving automatically for a long period of time, water will condense on the air de 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 in 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

Air  lter

To prevent dust from coming into the indoor unit.

I

H

C

A

IT

H

HITACHI

NOTE

● Air cleansing  lters are washable and can be use in 1 year time. Type number for this air cleansing

 lter is <SPX-CFH11>. Please use this number for ordering when you want to renew it.

● Air cleansing  lter should be cleaned every month or sooner if noticeable loading occurs. When

used overtime, it may loose its deodorizing function. For maximum performance, it is recommended to replace it every 1 year depending on application requirements.

(Refer Instruction manual)

Front panel

Indoor unit indicators

Light indicator showing the operating condition. (Refer page 3)

●

Horizontal de ector

Vertical de ector

(Air Outlet)

Remote controller

Send out operation signal to the indoor unit. So as to operate the whole unit. (Refer Instruction manual)

OUTDOOR UNIT

MODEL NAME AND DIMENSIONS

MODEL

RAS-S18H2AA

RAC-S18H2AA

DRAIN PIPE

Condensed water drain to outside.

CONNECTING CORD

AIR INLET (BACK, LEFT SIDE)

AIR OUTLET

WIDTH (mm)

780

850

HEIGHT (mm)

280

650

– 2 –

DEPTH (mm)

220

298

INDOOR UNIT INDICATORS

OPERATION INDICATOR

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  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  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.

TEMPORARY SWITCH

Use this switch to start and stop when the remote controller does not work. [Use non-conductor stick (example: toothpick)]

● By pressing the temporary switch, the operation is done in previously set operation 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.

– 3 –

NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT

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  xed on a wall using the  xture provided. Before  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.

Signal emitting window/transmission sign

●

Point this window toward the indoor unit when controlling it. The transmission sign blinks when a signal is sent.

● Display

This indicates the room temperature selected, current time, timer status, function

and intensity of circulation selected.

● START/STOP button

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

● SLEEP button

Use this button to set the sleep timer.

● TEMPERATURE buttons

Use these buttons to raise or lower the temperature setting. (Keep pressed,

and the value will change more quickly.)

● TIME button

Use this button to set and check the time and date.

● RESET buttons

● FUNCTION selector

Use this button to select the operating mode. Every time you press it,

the mode will change from (AUTO) to (HEAT) to (DEHUMIDIFY) to (COOL) and to (FAN) cyclically.

● FAN SPEED selector

This determines the fan speed. Every time you press this button, the intensity

of circulation will change from (AUTO) to (HI) to (MED) to (LOW) to (SILENT) (This button allows selecting the optimal or preferred fan speed for each operation mode).

● AUTO SWING button

Controls the angle of the horizontal air de ector.

● TIMER control

Use this button to set the timer.

● OFF-TIMER button Select the turn OFF time.

● ON-TIMER button Select the turn ON time.

● RESERVE button Time setting reservation.

● CANCEL button Cancel time reservation.

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  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 FUNCTION selector button during operation, the

device may stop for about 3 minutes for protection.

– 4 –

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 air 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 air ow

direction.

Note: 1. If you do not require Auto Restart Control, please consult your sales agent or OFF by remote control.

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, COOL or DEHUMIDIFY 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 connected to multi type outdoor unit.

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

● When AUTO has been selected, the device will automatically determine

1

the mode of operation, HEAT, COOL or DEHUMIDIFY depending on the current room temperature. However the mode of operation will not change when indoor unit 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).

START

STOP

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

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

have to press the (START/STOP) button next time.

You can raise or lower the temperature setting as necessary by maximum of 3°C.

Press the temperature button and the temperature setting will change by 1°C each time.

● The preset temperature and the actual room temperature may vary somewhat depending on conditions.

● The display does not indicate the preset temperature in the AUTO mode. If you change the setting, the indoor unit will produce a beep.

Press the (FAN SPEED) button, AUTO, LOW and SILENT is available.

– 5 –

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 keep reliability of the device, please use this device above -15°C of the outdoor temperature.

Press the FUNCTION selector so that the display indicates (HEAT).

1

Set the desired FAN SPEED with the (FAN SPEED) button (the display indicates the setting). (AUTO) : The fan speed changes automatically

2

(HI) : Economical as the room will become warm

But you may feel a chill at the beginning.

(MED) : Fan speed slow.

(LOW) : Fan speed slower.

(SILENT) : Fan speed ultra slower.

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

The temperature setting and the actual room temperature may

3

vary somewhat depending on conditions.

according to the temperature of the air which blows out.

quickly.

START

STOP

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

■ As the settings are stored in memory in the remote controller, you only have to press the (START/STOP) button next time.

■

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 cycle of 3 seconds on and 0.5 second off. The maximum time for defrosting is 20 minutes. However, if it 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 will likely to form.)

– 6 –

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 FUNCTION selector so that the display indicates (DEHUMIDIFY).

1

The FAN SPEED is set at LOW or SILENT.

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

2

The range of 20-26C is recommended as

the room temperature for dehumidifying.

START

STOP

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

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

only have to press the

(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 function will stop (the indoor unit will stop emitting air) as soon as the room temperature becomes lower than the setting temperature.

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

the room or other room conditions.

– 7 –

COOLING OPERATION

Use the device for cooling when the outdoor temperature is 21~ 43°C. If in doors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.

Press the FUNCTION selector so that the display indicates (COOL).

1

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

(AUTO) : The FAN SPEED is HI at  rst and varies

2

(HI) : Economical as the room will become cool

(MED) : Fan speed slow.

(LOW) : Fan speed slower.

(SILENT) : Fan speed ultra slower.

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

3

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

Press the

START

STOP

with a beep. Press the button again to stop operation. The cooling function 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 you set the temperature below the current room temperature.

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

only have to press the

to MED automatically when the preset temperature has been reached.

quickly.

(START/STOP) button. Cooling operation starts

(START/STOP) button next time.

(FAN SPEED) button

– 8 –

FAN OPERATION

You can use the device simply as an air circulator. Use this function to dry the interior of the indoor unit at the end of summer.

Press the FUNCTION selector so that the display indicates (FAN).

1

Press the (FAN SPEED) button.

(HI) : The strongest air blow.

(MED) : Fan speed slow.

2

(LOW) : Fan speed slower.

(SILENT) : Fan speed ultra slower.

FAN SPEED (AUTO)

For the heating operation

For the cooling operation

START

STOP

.....

When the AUTO fan speed mode is set in the cooling/heating operation:

● The fan speed will automatically change according to the temperature

● When the difference of room temperature and setting temperature is

● When the room temperature reaches setting temperature, fan speed

● When the difference of room temperature and setting temperature is

● After room temperature reaches the preset temperature, the cooling

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

of discharged air.

large, fan starts to run at HI speed.

changes to LOW automatically.

large, fan starts to run at HI speed.

operation, which changes the fan speed and room temperature to obtain optimum conditions for natural healthful cooling will be performed.

– 9 –

HOW TO SET THE TIMER

TIME

OFF TIMER

ON TIMER

RESERVE

CANCEL

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

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

● The arrow mark appearing on the display indicates the sequence of switching operations.

After you change the batteries;

You can set the device to turn off at the preset time.

● The device will turn on

at the designated times.

1 Press the (ON-OFF)

button so that the (OFF) mark blinks.

1 Set the (TIME) button.

1 Press the (OFF-TIMER)

button. The (OFF) mark blinks on the display.

1 Press the (ON-TIMER)

button the (ON) mark blinks on the display.

2 Set the turn-off time

with the TIMER control button. Press the (RESERVE) button.

AM

3 Press the (ON-

TIMER) button so that the

(OFF) mark lights and

(ON) mark blinks.

the

How to Cancel Reservation

Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL) button. The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.

NOTE

You can set only one of the OFF-timer, ON-timer and ON/OFF-timer.

– 10 –

2 Press the

(TIME) button.

3 Set the current time with the

TIMER control button.

Example: The current time is 1:30 p.m.

4 Press the (TIME) button again.

The time indication starts lighting instead of  ashing.

● The time indication will disappear

automatically in 10 second.

● To check the current time setting,

press the (TIME) button twice.

The setting of the current time is

now complete.

2 Set the turn-off time with the

TIMER control button.

2 Set the turn-on time with the

TIMER control button.

4 Set the turn-on time with the

TIMER control button.

3 Point the signal window of the remote controller toward the indoor unit, and

press the (RESERVE) button. The

(OFF) mark starts lighting instead of  ashing and the sign (RESERVED)

lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.

Example: The device will turn off at 11:00p.m.

The setting of turn-off time is now complete.

3 Point the signal window of the remote controller toward the indoor unit, and

press the (RESERVE) button. The

(ON) mark starts lighting instead of  ashing and the (RESERVED)

sign lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.

Example: The device will turn on at 7:00 a.m. The setting of the turn-on time is now complete.

5 Point the signal window of the remote controller toward the indoor unit, and

press the (RESERVE) button.

(ON) mark starts lighting instead of  ashing and the (RESERVED)

The sign lights. A beep occurs and the

(TIMER) lamp lights on the indoor unit.

Example: The device will turn off at 10:30 p.m. and it will be turned on at 7:00 a.m. The settings of the turn-on/off times are now complete.

● The timer may be used in three ways: off-timer, on-timer, and ON/OFF (OFF/ON)-timer. Set

the current time at  rst because it serves as a reference.

● As the time settings are stored in memory in the remote controller, you only have to press

the

(RESERVE) button in order to use the same settings next time.

– 11 –

HOW TO SET THE SLEEP TIMER

Set the current time at  rst if it is not set before (see the pages for setting the current time). Press the (SLEEP) button, and the display changes as shown below.

Mode

1 hour 2 hours 3 hours 7 hours

Sleep timer

Sleep Timer: The device will continue working for the designated number of hours and then turn off. Point the signal window of the remote controller toward the indoor unit, and press the SLEEP button. The timer information will be displayed on the remote controller. The TIMER lamp lights with a beep from the indoor unit. When the sleep timer has been set, the display indicates the turn-off time.

The device will be turned off by the sleep

timer and turned on by on-timer.

Indication

444

Sleep timer off

Example: If you set 3 hours sleep time at 11:38 p.m., the turn-off time is 2:38 a.m.

1

1 Set the ON-timer.

2 Press the (SLEEP) button and set the sleep timer.

For heating:

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

How to Cancel Reservation

Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL) button. The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.

– 12 –

HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER

Remove the cover as shown in the  gure and take out the

1

old batteries.

=

Install the new batteries.

2

The direction of the batteries should match the marks in the case.

!

CAUTION

1. Do not use new and old batteries, or different kinds of batteries together.

2. Take out the batteries when you do not use the remote controller for 2 or 3 months.

TEMPORARY SWITCH

If the remote controller does not work due to battery failure, press this switch to start and stop operation.

● This temporary operation will be at the setting made most recently. (The unit will immediately go into

automatic operation once power is switched on.)

CIRCUIT BREAKER

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

– 13 –

!

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.

Do Not Forget To Clean The Air Filter

Dusty air  lter will reduce the air volume and the cooling ef ciency. To prevent from wasting electric energy, please clean the  lter every 2 weeks.

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.

Please Adjust Suitable Temperature

For Baby And Children

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

– 14 –

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.

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.

– 15 –

ATTACHING THE AIR CLEANSING FILTERS

CAUTION

!

Cleaning and maintenance must be carried out only by quali ed service personal. 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  lter.

2

● Push upward to release the claws and pull out the

 lter.

Attaching the air cleansing  lters to the  lter.

3

● Attach the air cleansing  lters to the frame by gently

compress its both sides and release after insertion into  lter frame.

Claws

(4 places)

CAUTION

!

Do not bend the air cleansing  lter as it may cause damage to the structure.

Attach the  lters.

4

● Attach the  lters by ensuring that the surface written

“FRONT” is facing front.

● After attaching the  lters, push the front panel at

three arrow portion as shown in  gure and close it.

NOTE

● In case of removing the air cleansing  lters, please follow the above procedures.

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

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

● Do not operate the air conditioner without  lter. Dust may enter the air conditioner and fault may

occur.

– 16 –

MAINTENANCE

!

CAUTION

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

1. AIR FILTER

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

ROCDR

Open the front panel and remove the  lter

1

● Gently lift and remove the air cleansing  lter

from the air  lter frame.

Vacuum dust from the air  lter and air cleans-

2

ing filter using vacuum cleaner. If there is too much dust, air  lter only rinse under running tap water and gently brush it with soft bristle brush. Allow  lters to dry in shade.

● Re-insert the air cleansing  lter to the  lter

3

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

● After attaching the  lters, push the front panel

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

!

CAUTION

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

● Do not use detergent on the air cleansing  lter as some detergent may deteriorate the  lter

electrostatic performance.

– 17 –

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 inside 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, put 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.

– 18 –

!

CAUTION

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

3. MAINTENANCE AT BEGINNING OF LONG OFF PERIOD

● Running the unit setting the operation mode to

(FAN) and the fan speed to HI for about half a day

on a  ne day, and dry the whole of the unit.

● Switch off the power plug.

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER

EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.

1

2

3

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  rmly plugged into the socket? (Please ensure no loose contact between them).

– 19 –

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 air  lter blocked with dust?

● Does sunlight fall directly on the outdoor unit?

● Is the air  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  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 air  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 speci 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  uctuation

may occur. This is of no consequence.

The conditions of the local Power Supply Companies are to be observed.

– 20 –

Note

● Avoid to use the room air conditioner for cooling operation when the outside temperature is below

–10°C (14°F).

The recommended maximum and minimum operating temperatures of the hot and cold sides

should be as below:

Cooling Heating

Minimum Maximum Minimum Maximum Indoor Dry bulb °C 21 32 20 27 Wet bulb °C 15 23 12 19 Outdoor Dry bulb °C 21 43 2 21 Wet bulb °C 15 26 1 15

MEMO

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