Hitachi RAS-18CH5 User manual

– 1 –

ENGLISH

SPLIT TYPE AIR CONDITIONER

INDOOR UNIT/OUTDOOR UNIT

MODEL

RAS-18CH5/RAC-18CH5

RAS-24CH5/RAC-24CH5

OUTDOOR UNIT INDOOR UNIT

RAS-18CH5

RAS-24CH5

RAC-18CH5

RAC-24CH5

Instruction manual Page 1~26

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

Инструкция по эксплуатации

стр. 27~52

Для обеспечения наилууших эксплуатационных характеристик и многолетней безотказной работы обору ования

необхо имо полностыо оэнакомиться с анной Инструкцией по эксплуатации.

– 2 –

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.

●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 SHIFTING OR MAINTENANCE

PRECAUTIONS DURING OPERATION

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

●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.

●Do not put objects like thin rods into the panel of blower and suction side

because the high-speed fan inside may cause danger.

●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.

– 3 –

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 place plants directly under the air flow as it is bad for the plants.

●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.

●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.

●The product shall be operated under the manufacturer specification and

not for any other intended use.

●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 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.

– 4 –

INDOOR UNIT

NAMES AND FUNCTIONS OF EACH PART

Air filter

To prevent dust from coming into the indoor unit.

(Refer page 21)

Front panel

Indoor unit indicators

Light indicator showing the operating condition.

(Refer page 5)

Horizontal deflector ●Vertical deflector

(Air Outlet)

(Refer page 16)

Remote controller

Send out operation signal to the indoor unit. So as to

operate the whole unit.

(Refer page 6)

OUTDOOR UNIT

Drain pipe

Condensed water drain to outside.

Connecting cord and insulation pipe for piping

Air inlet (Back and Left side)

Air outlet

WIDTH (mm)

1030

850

MODEL

RAS-18CH5 / RAS-24CH5

RAC-18CH5 / RAC-24CH5

HEIGHT (mm)

295

650

DEPTH (mm)

191

298

MODEL NAME AND DIMENSIONS

CAUTION

• When heating operation, drain or

defrosted water flows out from outdoor

unit. Don’t close drain outlet portion

in chilly area so as not to freeze these.

– 5 –

ENGLISH

INDOOR UNIT INDICATORS

AUTO RESTART SWITCH

●In the event of power failure, the air conditioner will restart automatically in the previously selected mode once

the power is restored.

●In the event of power failure during TIMER operation, the timer will be reset and the unit will begin or stop

operating under a new timer setting.

OPERATION INDICATOR

●This figure shows the opening condition of

front panel. Refer to page 20 in relation to

how to open or close the front panel.

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 100

hours, the FILTER lamp lights to indicate that it is time

to clean the filter. The lamp goes out when the POWER

SWITCH set to OFF and ON again.

HITACHI

AUTO

RESTART

SWITCH

AUTO

RESTART

SWITCH

–6 –

AUTO

HEAT

DEHUMIDIFY

COOL

FAN

FAN SPEED

LOW

MED

SLEEPING

STOP (CANCEL)

START (RESERVE)

START/STOP

TIME

TIMER SET

TIMER SELECTOR

ON TIMER

OFF TIMER

AUTO SWING

˚CH

RESET

˚CH

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 fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit can

be controlled from the remote controller.

●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)

(during the (FAN) mode, from HI to MED to LOW).

●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.

–7 –

ENGLISH

AUTOMATIC OPERATION

The device will automatically determine the mode of operation, HEAT, COOL or DEHUMIDIFY depending on

the initial room temperature. The selected mode of operation will not change when the room temperature

varies.

■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 initial room temperature.

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 (START/STOP) button.

Operation starts with a beep.

Press the button again to stop operation.

START

STOP

°C

RESET

Over 27°C COOL

23~27°C

Under 23°C HEAT

Temperature settingFunction

27°C

23°C

Slightly lower than the

room temperature LOW

FAN SPEED

HI at start, MED or LOW

after the preset temperature

is reached

HI at start, MED or LOW

after the preset temperature

is reached

DEHUMIDIFY

Initial room temperature

(approx.)

■Condition of Automatic Operation

–8 –

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.

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 is HI at first and varies to

MED or LOW automatically when the preset

temperature has been reached.

(HI) : Economical as the room will become warm

quickly.

But you may feel a chill at the beginning.

(MED) : Quiet.

(LOW) : More quiet.

Set the desired room temperature with the TEMPERATURE

buttons (the display indicates the setting).

The range of 18-22°C is recommended as the

room temperature for heating.

If the temperature setting is 20°C, the room

temperature will be controlled at around 20°C.

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.

START

STOP

RESET

–9 –

ENGLISH

RESET

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.

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.

■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 automatically.

The FAN SPEED button does not work.

–10 –

RESET

COOLING OPERATION

Use the device for cooling when the outdoor temperature is 22-39°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 or LOW automatically when the preset

temperature has been reached.

(HI) : Economical as the room will become cool

quickly.

(MED) : Quiet.

(LOW) : More quiet.

Set the desired room temperature with the TEMPERATURE

button (the display indicates the setting).

The range of 25-28°C is recommended as the

room temperature for cooling.

If the temperature setting is 27°C, the room

temperature will be controlled at around 27°C.

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.

START

STOP

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