Hitachi RAI-50NH5A, RAI-25NH5A, RAI-35NH5A User Manual

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ENGLISH

CEILING CASSETTE TYPE AIR CONDITIONER

INDOOR UNIT/OUTDOOR UNIT

MODEL

RAI-25NH5A RAI-35NH5A RAI-50NH5A

INDOOR UNIT

RAI-25NH5A RAI-35NH5A RAI-50NH5A

DEUTSCH

FRANÇAIS

ITALIANO

ESPAÑOL

PORTUGUÊS

∂ППЛУИО¿

РУССКИЙ

(EN1) RAI-25/35/50NH5A 5/3/08, 10:08 AM1

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INDOOR UNIT

NAMES AND FUNCTIONS OF EACH PART

WIDTH (mm)

580

MODEL

RAI-25NH5A, 35NH5A, 50NH5A

HEIGHT (mm)

285

DEPTH (mm)

580

MODEL NAME AND DIMENSIONS

AIR FILTER

To prevent dust from coming into the indoor unit. (Refer Instruction Manual)

INDOOR UNIT INDICATORS

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

SUCTION GRILL (AIR INLET)

HORIZONTAL DEFLECTOR (AIR OUTLET)

(Refer Instruction Manual)

REMOTE CONTROL

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

MULTI-AIR CONDITIONER

With this multi-air conditioner, several indoor units can be connected to one outdoor unit to be driven. You can operate the required number of indoor units.

Combination of Operations:

● You cannot operate the indoor units in the

following combinations.

● The indoor unit which is switched on first continues to

operate, but other indoor units which is switched on later does not operate while the lamp lights.

● To re-start an indoor unit which was operated later, stop

the indoor unit which was operated first or later and reset the type of operation, then perform operation again.

One unit

Heating

Other unit

Cooling

Dehumidifying

Circulating (fan)

Adjusting the Number of Indoor Units:

Decrease the number of indoor units to be operated especially when it is very hot or cold or when you want to reach the present temperature quickly.

Stopped Indoor Units:

When an indoor unit is operated in the cooling, heating or dehumidifying mode in the room, the sound of refrigerant flow may be heard from a stopped indoor unit or a stopped indoor unit may become warm. This is because the indoor unit returns refrigerant to the outdoor unit to be ready for operation.

When operation mode is selected:

● When heating operation is automatically selected for the first indoor unit, the next indoor unit will then start to heat.

Also, if cooling or dehumidifying is automatically selected for the first indoor unit, the next indoor unit will also start to cool or dehumidify.

During automatic operation:

● Recommended to replace the air cleaning filter after every 3 months for normal usage. Type number for this air

cleaning filter is <SPX-CFH5>. Please use this number for ordering when you want to renew it.

NOTE

(EN1) RAI-25/35/50NH5A 5/3/08, 10:08 AM2

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ENGLISH

INDOOR UNIT INDICATORS

OPERATION LAMP

This lamp lights during operation. The OPERATION LAMP flashes 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 an 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.

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 filter. The lamp goes out when the “ (AUTO SWING)” button is pressed while the device is on “STANDBY MODE”.

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 will be done in automatic mode.

OPERATION INDICATOR

TEMPORARY

SWITCH

Press

Temporary Switch

about 5.5mm

Nonconducted stick

(EN1) RAI-25/35/50NH5A 5/3/08, 10:08 AM3

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MEMO

.....................................................................................................................................................................................

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

Note

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

21°C (70°F). The recommended maximum and minimum operating temperatures of the hot and cold sides should be as below:

Cooling Heating

(EN1) RAI-25/35/50NH5A 5/3/08, 10:08 AM4

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ENGLISH

SPLIT TYPE

Instruction manual

Instruction manual Page 1~24

To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.

(EN) Inst Manual 1642 5/3/08, 10:22 AM1

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!

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 “ 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.

●

Please keep this manual after reading.

WARNING

PRECAUTIONS DURING INSTALLATION

●

Do not reconstruct the unit. Water leakage, fault, short circuit or fire may occur if you reconstruct the unit by yourself.

●

Please ask your sales agent or qualified technician for the installation of your unit. Water leakage, short circuit or fire may occur if you install the unit by yourself.

●

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 specified 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 flammable gas. The outdoor unit may catch fire if flammable gas leaks around it.

●

Please ensure smooth flow of water when installing the drain hose.

CAUTION

!

PRECAUTIONS DURING OPERATION

●

Avoid an extended period of direct air flow for your health.

W

A R N

I N G

!

●

Do not insert a finger, 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.

●

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

!

Make sure to connect earth line.

Indicates the instructions that must be followed.

The sign in the figure indicates prohibition.

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 fire 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 fire.

●

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

W A R N

I N G

!

(EN) Inst Manual 1642 5/3/08, 10:22 AM2

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ENGLISH

PRECAUTIONS DURING OPERATION

●

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 insufficiency.

●

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.

●

Do not use any aerosol or hair sprays near the indoor unit. This chemical can adhere on heat exchanger fin and blocked the evaporation water flow to drain pan. The water will drop on tangential fan and cause water splashing out from indoor unit.

●

Please ensure that outdoor mounting frame is always stable, firm 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.

●

When operating the unit with the door and windows opened, (the room humidity is always above 80%) and with the air deflector facing down or moving automatically for a long period of time, water will condense on the air deflector 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 infirm 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.

●

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

●

Please switch off the unit and turn off the circuit breaker during cleaning, the high-speed fan inside the unit may cause danger.

●

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

C A U T

I O N

!

●

The product shall be operated under the manufacturer specification and not for any other intended use.

(EN) Inst Manual 1642 5/3/08, 10:22 AM3

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SILENT LOW MED HI

AUTO

HEAT

DEHUMIDIFY

COOL

FAN

FAN SPEED

SLEEPING

STOP (CANCEL)

START (RESER VE)

START/STOP

TIME

TIMER SET

TIMER SELECT OR

ON TIMER OFF TIMER

AUTO SWING

NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT

● 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 deflector.

● 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 floor,

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.

REMOTE CONTROLLER

● Operate by pointing towards the signal receptor on the indoor unit. The range of control is

about 7 meters. Signal receivable angle range is approximately 70°. However, if there is an electronic light sensor device (inverter) in the room, signal may not be received or receivable distance may become shorter.

● Indoor unit must be install 1 meter or more away from lighting.

● 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.

▲

Approximately 70°

(EN) Inst Manual 1642 5/3/08, 10:22 AM4

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ENGLISH

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.

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 airflow 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 airflow 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.

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

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

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

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

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

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.

1

START

STOP

°C

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

(EN) Inst Manual 1642 5/3/08, 10:22 AM5

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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).

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

(AUTO) : The fan speed changes automatically

according to the temperature of the air which blows out.

(HI) : Economical as the room will become warm

quickly. 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 vary somewhat depending on conditions.

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.

1

2

3

START

STOP

■ 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 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.)

(EN) Inst Manual 1642 5/3/08, 10:22 AM6

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ENGLISH

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.

■ 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.

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

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

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

2

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

only have to press the

(START/STOP) button next time.

START

STOP

Press the FUNCTION selector so that the display indicates

(DEHUMIDIFY).

The FAN SPEED is set at LOW or SILENT.

1

(EN) Inst Manual 1642 5/3/08, 10:22 AM7

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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).

Set the desired FAN SPEED with the

(FAN SPEED) button

(the display indicates the setting).

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

to MED automatically when the preset temperature has been reached.

(HI) : Economical as the room will become cool

quickly.

(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).

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

Press the

(START/STOP) button. Cooling operation starts 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

(START/STOP) button next time.

1

2

START

STOP

3

(EN) Inst Manual 1642 5/3/08, 10:22 AM8

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ENGLISH

FAN SPEED (AUTO)

.....

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

For the heating operation

● The fan speed will automatically change according to the temperature

of discharged air.

● When the difference of room temperature and setting temperature is

large, fan starts to run at HI speed.

● When the room temperature reaches setting temperature, fan speed

changes to LOW automatically.

● When the difference of room temperature and setting temperature is

large, fan starts to run at HI speed.

● After room temperature reaches the preset temperature, the cooling

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

For the cooling operation

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).

Press the (FAN SPEED) button.

(HI) : The strongest air blow.

(MED) : Fan speed slow.

(LOW) : Fan speed slower.

(SILENT) : Fan speed ultra slower.

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

1 2

START

STOP

(EN) Inst Manual 1642 5/3/08, 10:22 AM9

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HOW TO SET THE TIMER

ON/OFF-Timer

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

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

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

1 Press the (ON-OFF)

button so that the (OFF) mark blinks.

OFF-Timer

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

After you change the batteries;

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.

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.

3 Press the (ON-

TIMER) button so that the

(OFF) mark lights and

the

(ON) mark blinks.

NOTE

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

ON-Timer

Time

● The device will turn on

at the designated times.

TIME

OFF TIMER

ON TIMER

RESERVE

CANCEL

AM PM

STOP

Start

AM

Start

Stop

AM

Start Stop

PM

AM

PM

(EN) Inst Manual 1642 5/3/08, 10:22 AM10

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ENGLISH

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 flashing and the sign (RESERVED)

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

● 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.

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

the current time at first 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.

2 Press the

(TIME) button.

3 Set the current time with the

TIMER control button.

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

2 Set the turn-off time with the

TIMER control button.

The setting of turn-off time is now complete.

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

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

4 Set the turn-on time with the

TIMER control button.

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

press the (RESERVE) button.

The

(ON) mark starts lighting instead of flashing and the (RESERVED)

sign lights. A beep occurs and the

(TIMER) lamp lights on the indoor unit.

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 flashing and the (RESERVED)

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

2 Set the turn-on time with the

TIMER control button.

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.

4 Press the (TIME) button again.

The time indication starts lighting instead of flashing.

AM

PM

AM

PM

AM

PM

AM

PM

AM

PMPMPM

PM

PMPMPM

PM

AMAMAM

AM

(EN) Inst Manual 1642 5/3/08, 10:22 AM11

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HOW TO SET THE SLEEP TIMER

1 Set the ON-timer.

Set the current time at first 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

Sleep timer

Indication

1 hour 2 hours 3 hours 7 hours

Sleep timer off

44 44

1

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.

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

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

The device will be turned off by the sleep timer and turned on by on-timer.

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.

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.

H

AM

H

AM

Sleep

timer

Start

SLEEP

(EN) Inst Manual 1642 5/3/08, 10:22 AM12

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ENGLISH

ADJUSTING THE AIR DEFLECTOR

1

Adjustment of the conditioned air in the upward and downward directions.

According to “Dehumidifying” or “Cooling” operation, the horizontal air deflector is automatically set to the proper angle suitable for each operation. The deflector can be swung up and down and also set to the desired angle using the “ (AUTO SWING)” button. (If the angle of the deflector is changed, it will not return to the autoset position after operations start unless the operation mode is switched.)

● If the “ (AUTO SWING)” button is pressed

once, the horizontal air deflector swings up and down. If the button is pressed again, the deflector stops in its current position. Several seconds (about 6 seconds) may be required before the deflector starts to move.

● Use the horizontal air deflector within the adjusting

range shown on the right.

● When the “ (AUTO SWING)” button is

pressed while the operation is stopped, the horizontal air deflector moves and stops at the position where the air outlet closes.

● When the auto swing operation is performed, if the

horizontal air deflector is moved manually, the swinging range may drift. However, it will return to the original operation range after a short time.

about 45˚

SWINGING

RANGE

45˚

about 45˚

SWINGING RANGE

45˚

!

CAUTION

When operating the unit in cooling operation with the air deflector facing down and moving automatically for a long period of time, water will condensed on the air deflector and drips down occasionally. This will wet your furniture.

(EN2) Inst Manual 1642 5/3/08, 10:22 AM13

– 14 –

HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER

1

Remove the cover as shown in the figure and take out the old batteries.

=

2

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

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.

CAUTION

!

Push and pull to the direction of arrow

CIRCUIT BREAKER

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

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.)

(EN2) Inst Manual 1642 5/3/08, 10:22 AM14

– 15 –

ENGLISH

Suitable Room Temperature Install curtain or blinds

Ventilation Effective Usage Of Timer

Do Not Forget To Clean The Air Filter

Please Adjust Suitable Temperature

For Baby And Children

Warning

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

!

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.

Dusty air filter will reduce the air volume and the cooling efficiency. To prevent from wasting electric energy, please clean the filter every 2 weeks.

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

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.

!

THE IDEAL WAYS OF OPERATION

(EN2) Inst Manual 1642 5/3/08, 10:22 AM15

– 16 –

FOR USER’S INFORMATION

The Air Conditioner And The Heat Source In The Room

Not Operating For A Long Time

When Lightning Occurs

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.

!

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.

Warning

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

!

OFF

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.

!

Inverter-type fluorescent lamp.

To prevent interference, place at least 1m away.

TV

(EN2) Inst Manual 1642 5/3/08, 10:22 AM16

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ENGLISH

MAINTENANCE

Cleaning and maintenance must be carried out by qualified service personnel. Before the cleaning, stop operation and disconnect the power supply.

Clean the filter at least once every one month. This helps save electricity cost.

1. CLEANING OF AIR FILTER

PROCEDURE

CAUTION

1

Remove the filter from indoor

● Press the mark “PUSH” on the left and

right sides of the suction grille.

● Pull out the filter from the grille.

2

Remove dust from the filter using a vacuum cleaner. If there is too much dust, use neutral detergent. After using neutral detergent, wash with clean water and dry in the shade.

3

Install the filter. (Set it with “UP SIDE” mark facing front.) Slot the filter to suction grille and close as original state. (Press the mark “PUSH” at the left and right sides of the suction grille to fix it securely.)

CAUTION

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

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

the sun. The filter may shrink.

● Do not operate the air conditioner with the filter removed. Dust may enter the air conditioner and

cause trouble.

REMOVAL AND ATTACHMENT OF AIR FILTER

Note:

● This model has an air cleaning filter. The cooling capacity is slightly weakened and the cooling

speed becomes slower when the air cleaning filter is used. So, set the fan speed to “HIGH” when using it in this condition.

PUSH

Grille

Filter Guide

Safety Cable

Air Filter

!

(EN2) Inst Manual 1642 5/3/08, 10:22 AM17

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1

2

3

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS EITHER EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT SHOULD YOU NEED ANY HELP.

Is the earth line disconnected or broken?

WARNING

Coming off or breakage of grounding wire may cause malfunction or electrical shock.

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

WARNING

Outdoor unit may fall or drop if there is extreme rust on mounting frame or outdoor unit is unstably installed. This may cause injury.

!

2. CLEANING OF FRONT PANEL

● Wipe it with a soft dry cloth.

● When it is excessively dirty, wipe with soft cloth soaked in lukewarm water or neutral detergent. Then

wipe thoroughly with a soft dry cloth.

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.

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 fine day, and dry the whole of the unit.

● Turn off the circuit breaker.

Air

Blow

!

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

Confirm

(EN2) Inst Manual 1642 5/3/08, 10:22 AM18

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ENGLISH

AFTER SALE SERVICE AND WARRANTY

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.

When it does not operate

● 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 filter blocked with dust?

● Does sunlight fall directly on the outdoor unit?

● Is the air flow 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”?

CONDITION CHECK THE FOLLOWING POINTS

Notes

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

may occassionally occur, but they are not abnormal for the operation. (1 ) Slight flowing 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 filter 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 specified capacity.

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

If the remote controller is not transmitting a signal.

● Do the batteries need replacement?

● Is the polarity of the inserted batteries correct?

Remote controller display is dim or blank.)

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 fluctuation

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

(EN2) Inst Manual 1642 5/3/08, 10:22 AM19

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MEMO

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(EN2) Inst Manual 1642 5/3/08, 10:22 AM20

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ENGLISH

MEMO

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(EN2) Inst Manual 1642 5/3/08, 10:22 AM21

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MEMO

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(EN2) Inst Manual 1642 5/3/08, 10:22 AM22

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ENGLISH

MEMO

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(EN2) Inst Manual 1642 5/3/08, 10:22 AM23

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(EN2) Inst Manual 1642 5/3/08, 10:22 AM24

Hitachi RAI-50NH5A, RAI-25NH5A, RAI-35NH5A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual