Hitachi RAC-32CNH2 User manual

SPLIT TYPE

HITACHI

INDOOR UNIT/OUTDOOR UNIT

MODEL

RAS-32CNH2/RAC-32CNH2

Instruction manual Page 1~18

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

completely.

OUTDOOR UNIT INDOOR UNIT

RAS-32CNH2

RAC-32CNH2

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32CNH2 EN1 3/25/05, 2:301

– 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.

●“ ” sign in attached figure indicates prohibition.

●Please keep this manual after reading.

WARNING

PRECAUTIONS DURING INSTALLATION

●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 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.

WARNING

●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.

32CNH2 EN1 3/25/05, 2:302

– 3 –

ENGLISH

PRECAUTIONS DURING OPERATION

●The product shall be operated under the manufacturer specification 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 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.

●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.

●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 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.

32CNH2 EN1 3/25/05, 2:303

– 4 –

INDOOR UNIT

OUTDOOR UNIT

WIDTH (mm)

798

820

MODEL

RAS-32CNH2

RAC-32CNH2

HEIGHT (mm)

265

520

DEPTH (mm)

168

280

MODEL NAME AND DIMENSIONS

NAMES AND FUNCTIONS OF EACH PART

AIR FILTER

To prevent dust from coming into the indoor unit.

(Refer page 16)

POWER PLUG (NOT PROVIDED)

INDOOR UNIT INDICATORS

Light indicator showing the operating condition.

(Refer page 5)

SUCTION GRILL (AIR INLET)

HORIZONTAL DEFLECTOR ●VERTICAL

DEFLECTOR (AIR OUTLET)

(Refer page 12)

REMOTE CONTROL

Send out operation signal to the indoor unit. So as

to operate the whole unit.

(Refer page 6)

DRAIN PIPE

Condensed water drain to outside.

CONNECTING CORD

AIR INLET (BACK, LEFT SIDE)

AIR OUTLET

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32CNH2 EN1 3/25/05, 2:304

– 5 –

ENGLISH

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OFF

NORMAL AUTO

START TEMPORARY

SWITCH

INDOOR UNIT INDICATORS

TEMPORARY SWITCH

Use this switch to start and

stop when the remote

controller does not work.

Normally do not use this

button.

OPERATION INDICATOR

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.

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.

SIGNAL RECEIVER

There will be a beep sound when this receiver receives

signal from remote controller.

TIMER LAMP

This lamp lights when the timer is working.

POWER SWITCH

SELECTOR SWITCH

AUTO START

Use this switch in order to set

the unit to automatically switch

ON after the power supply

resuming from the power failure.

NORMAL

Use this switch in order to

prevent the unit from switch ON

after the power supply resuming

from the power failure.

SELECTOR SWITCH IS

PRESET AT NORMAL

POSITION.

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32CNH2 EN1 3/25/05, 2:305

–6 –

NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT

■This controls the operation function and timer setting of the room air conditioner. The range of

control is about 4 meters. If indoor lighting is controlled electronically, the range of control may be

shorter.

Precautions for Use

●Do not put the remote controller in direct

sunlight and high temperature.

●Do not drop it on the floor, and protect

it from water.

●If you press the FUNCTION button

during operation, the air conditioner may

stop for about 3 minutes for protection

before you can start it again.

You can use the remote controller by fixing it on the

wall with the accessory parts.

●Before fixing it,

make sure the

unit can be

controlled by the

remote control

unit at the fixing

position.

REMOTE

CONTROLLER

HOLDER

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.

(Page 10)

Reserve Button

Timer setting reservation.

OFF TIMER Button

Select the turn OFF time.

ON TIMER Button

Select the turn ON time.

Transmission Sign

The transmission sign blinks

when a signal has been send.

TEMPERATURE Button

Room temperuture setting.

Value will change more quickly

when keep pressing.

(Page 7)

FAN SPEED Button

Select the fan speed for

cooling and heating mode.

(Page 8)

AUTO SWING Button

Control the angle of the

horizontal air deflector.

( Page 12)

CANCEL Button

Cancel timer reservation.

Signal Transmission

FUNCTION Button

Select the operation mode.

(Page 8)

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HITACHI

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32CNH2 EN1 3/25/05, 2:306

–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.

Press the (START/STOP) button

●Operation start with a “beep”sound.

Press the (START/STOP) button

●Make sure the (Automatic) mode have been selected by using

the (FUNCTION) button.

●The fan speed selector does not work at this operation.

STOP

Press the (ROOM TEMPERATURE) button

●Temperature setting change by 1°C for each 1 time press.

Down

●You can raise or lower the temperature setting by a maximum of

3°C.

●The display does not indicate the preset temperature in the Automatic

mode. Device will receive the setting by a “beep”.

■You can slightly adjust the room temperature.

°C

▲ ▲

■CONDITION OF AUTOMATIC OPERATION

●The selected mode of operation will not change during the operation even though the room

temperature change.

Over 27°C COOL

23 ~ 27°C

FUNCTION

27°C

Slightly lower than the

room temperature LOW

FAN SPEED

HIGH at start, LOW after

the preset temperature is

reached

DRY

INITIAL ROOM

TEMPERATURE (APPROX.)

TEMPERATURE

SETTING

Under 23°C HEAT 23°CHIGH at start, MED or

LOW after the preset

temperature is reached

HITACHI

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HITACHI

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32CNH2 EN1 3/25/05, 2:307

–8 –

MANUAL OPERATION [Heating ●Dehumidify ●Cooling]

■Please use under below condition when you want to set the function mode, room temperature and

fan speed by manually.

OPERATION MODE SELECTION

●Every time you press the button, the mode will change as the below

sequence

(Auto) [(Heat) [(Dry) [(Cool)

ROOM TEMPERATURE SETTING

Down

●The cooling operation does not start if the

temperature setting is higher than the current

room temperature.

FAN SPEED SETTING

●Every time you press the button, fan speed will change as the

below sequence.

●HEATING : AUTO [HIGH [MED [LOW

COOLING : ( [[[)

●DEHUMIDIFYING : LOW (FIXED)

: ( )

Press the (START/STOP) button

●Operation start with a signal received sound “beep”.

Press the (START/STOP) button

●As the settings are stored in memory in the remote control unit, you

only have to press the (Start/Stop) button in order to use the

same setting next time.

STOP

HEATING

Outdoor Temperature

21°C below

DEHUMIDIFYING

Room Temperature

16°C above

COOLING

Outdoor Temperature

22°C above

°C

Heating 20~24°C

Dehumidify 20~26°C

Cooling 25~28°C

■Recommend Temperature

▲ ▲

HITACHI

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HITACHI

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HITACHI

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32CNH2 EN1 3/25/05, 2:308

–9 –

ENGLISH

TIMER RESERVATION

■ON Timer and OFF Timer are available.

OFF TIME setting

●Select the OFF TIME by pressing the (OFF)

Button.

●Setting time will change according to the below

sequence when you press the button.

●The value change more quickly if you keep pressing

the button.

OFF Timer Reservation

■Operation stop at setting time

Press the (Reserve) button

●OFF TIMER reserved with a signal received sound

“beep”.

●The (OFF) Mark starts lighting instead of blinking.

0.5 1.0 1.5 9.5 10 11 12

0.5 hour interval 1 hour interval

ON TIME setting

●Select the ON TIMER by pressing the (ON)

Button.

●At the beginning of setting, time 6 hours was set.

●Setting time will change according to the below

sequence.

●The value change more quickly if you keep pressing

the button.

ON Timer Reservation

0.5 1.0 1.5 9.5 10 11 12

0.5 hour interval 1 hour interval

Press the (Cancel) button

●As the time settings are stored in remote controller

memory, you only have to press the (Reserve)

button in order to use the same setting next time.

CANCELLATION of Timer Reservation

Press the (Reserve) button

●ON TIMER reserved with a signal received sound

“beep”.

●The (ON) Mark starts lighting instead of blinking.

■Operation will start for setting

temperature at setting time (The starting

time may different depend on the room

temperature and set temperature).

Hr.

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Hr.

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Hr.

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Hr.

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Hr.

32CNH2 EN1 3/25/05, 2:309

– 10 –

HOW TO SET THE SLEEP TIMER

Mode

Sleep timer

Indication

1 hour 2 hours 3 hours 7 hours

Sleep timer off

44 44

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.

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

If you set the sleep timer when the off-timer or

on/off-timer has been set earlier, the sleep timer

becomes effective instead of the off- or on/off-

timer set earlier.

Hr.

HITACHI

°C

Example: Setting 3 hours

sleep time.

32CNH2 EN2 3/25/05, 2:3310

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