Hitachi RAK-50N6, RAK-25N6, RAK-35N6 Instruction Manual

SPLIT TYPE AIR CONDITIONER

INDOOR UNIT

MODEL

RAK-25N6 RAK-35N6 RAK-50N6

INDOOR UNIT

RAK-25N6 RAK-35N6 RAK-50N6

Instruction manual Page 1~24

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

– 1 –

SAFETY PRECAUTION

●

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

●

Pay special attention to signs of “ 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.

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 fire may occur if you reconstruct the unit by yourself.

●

Please ask your sales agent or qualified technician for the installation of your unit.

!

WARNING

!

CAUTION

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.

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.

W

●

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

A

electric shock and fire.

R N

●

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

I

shock or fire 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 obtainable

G

at authorized service/parts centers.

!

The sign in the figure indicates prohibition.

PRECAUTIONS DURING OPERATION

●

Avoid an extended period of direct air flow 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 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.

– 2 –

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.

●

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 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.

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 flow 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 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.

●

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.

– 3 –

NAMES AND FUNCTIONS OF EACH PART

INDOOR UNIT

Air filter

To prevent dust from coming into the indoor unit. (Refer page 19)

Front panel

Indoor unit indicators

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

Horizontal deflector (Air Outlet)

(Refer page 14)

Remote controller

Send out operation signal to the indoor unit. So as to operate the whole unit. (Refer page 6)

MODEL NAME AND DIMENSIONS

●

Vertical deflector

MODEL

RAK-25N6/RAK-35N6/RAK-50N6

WIDTH (mm)

780

– 4 –

HEIGHT (mm)

280

DEPTH (mm)

220

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 on the Remote Controller while the device is on “STANDBY MODE”.

OPERATION LAMP

This lamp lights during operation.

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.

– 5 –

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.

●

Transmission sign

The transmission sign blinks when a signal is sent.

●

Display

This indicates the room temperature selected, timer status, function and intensity of circulation selected.

●

CIRCULATION button

Use this button to set air circulation in the room or start operation.

●

DEHUMIDIFYING button

Use this button to dehumidify the room or start operation.

●

COOLING button

Use this button to set cooling mode in the room or start operation.

●

RESET button

●

SPEED COOL buttonA

CIRCULATION / START

DEHUMIDIFY / START

COOLING / START

FAN

FAN SPEED

SILENT LOW MED HI

SLEEP TIMER

STOP

TIMER SELECTOR ON TIMER

AUTO SWING

SUPER SILENT

Use this button to deliver faster and more comfortable airconditioning.

●

STOP button

Press this button to stop operation only.

● SUPER SILENT button

Use this button to set silent condition.

●

FAN SPEED selector

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

intensity of circulation will change from (AUTO) to

to

●

AUTO SWING button

Controls the angle of the horizontal air deflector.

●

TEMPERATURE button

Use this button to raise or lower the temperature setting. (Keep pressed, and the value will change more quickly.)

●

SLEEP button

Use this button to set the sleep timer.

●

ON-TIMER button Select to turn ON time.

Precautions for Use

●

Do not put the remote controller in the following places.

●

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.

TO

(HI) to (MED)

(LOW) to (SILENT).

In direct sunlight. In the vicinity of a heater.

– 6 –

COOLING OPERATION

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

Press the button so that the display indicates

(COOL). Cooling operation starts with a beep. The cooling function does not start if the temperature setting is

1

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.

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

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

2

(HI) : Economical as the room will become warm

(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 somewhat depending on conditions.

STOP

Press the

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

have to press the

MED or LOW automatically when the preset temperature has been reached.

quickly. But you may feel a chill at the beginning.

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.

(STOP) button to stop operation.

(COOLING) button next time.

(FAN SPEED) button

– 7 –

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 (DEHUMIDIFY) button. Dehumidifying operation starts with a beep.

1

The FAN SPEED is set at SILENT or LOW automatically. The FAN SPEED button can be used to change between SILENT and LOW only.

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

2

STOP

Press the (STOP) button to stop operation.

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

only have to press the

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

(DEHUMIDIFY) 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.

– 8 –

SUPER SILENT

Press the button.

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

1

● Unit will be forced to operate in cooling mode and indoor

fan speed will be changed to SILENT.

CANCELLATION of SUPER SILENT Operation

Cancel Condition

Press button. Sleeping timer time is up

Press SPEED COOL button

Press button Next fan speed operation

Operation mode after cancel

Stop operation

SPEED COOL operation

NOTE:

Under SUPER SILENT operation and quiet environment, phenomena like flowing noise of refrigerant in the refrigerating cycle may occur, but this is normal for the operation.

– 9 –

CIRCULATION OPERATION

1

2

3

Press the button so that the display indicates (CIRCULATE). Circulating operation starts with a beep.

Press the FAN SPEED button and select the desired FAN SPEED (the display indicates your choice).

Press the temperature control button to set to the desired temperature.

STOP

■ Circulation Function

● During circulation operation, compressor will not be running and there is no cooling operation with only

indoor fan running.

● When the setting temperature is higher than room temperature, indoor fan will stop running.

Press the (STOP) button to stop operation.

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

you only have to press the

(CIRCULATION) button next time.

– 10 –

SPEED COOL

■ During operations (only for COOLING, DEHUMIDIFYING, CIRCULATION) in any fan speed (AUTO, HI, MED, LOW and SILENT), press the fan speed and change horizontal deflector angle to improve the amenity sensation (subject to customer preferences).

■ It will return to their original settings after 3 hrs of operations.

■ Press the

COOLING OPERATION

DEHUMIDIFYING OPERATION

CIRCULATION OPERATION

(SPEED COOL) button again to cancel speed cool operation.

When pressed SPEED COOL

Selected FAN SPEED

(HI)

(MED)

(LOW)

(SILENT)

(AUTO)

(LOW)

(SILENT)

(HI)

(MED)

(LOW)

(SILENT)

(AUTO)

Default

Angle

55°

60°

10°

FAN SPEED

θ

SUPER HI

LOW

button to increase

button

HI

Angle

35°

θ

θ = Horizontal Deflector

Angle.

● During circulation operation, compressor will not be running and there is no cooling

operation with only indoor fan running.

● When the setting temperature is higher than room temperature, indoor fan will stop

running. At this time, by pressing “SPEED COOL” button, fan will remain stop.

– 11 –

HOW TO SET THE SLEEP TIMER

Press the (SLEEP) button, and the display changes as shown below.

SLEEP

Mode

444

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.

1 hr 2 hrs 3 hrs 10 hrs 11 hrs 12 hrs

Indication

44

Sleep timer off

4

1

Explanation of the sleep timer

The device will control the FAN SPEED and room temperature automatically so as to be quiet and good for people’s health.

NOTE

● You can not set other timer during sleep timer operation.

● After sleep timer time is up and when press sleep button again, the sleep timer

will be set as last setting.

● Sleep timer effective only once.

– 12 –

HOW TO SET THE TIMER

ON Timer Reservation

ON TIME setting

● Select the ON TIMER by pressing the (ON)

Button.

● Setting time will change according to the below

sequence.

1 hour interval

1 2 3 9 10 11 12

(CANCEL OFF TIMER)

■ Operation will start for setting temperature at setting time (The starting time may different depend on the room temperature and set temperature).

– 13 –

AIR FLOW LOUVERS ADJUSTMENTS

Adjustment of the conditioned air in the upward and downward

1

directions.

The horizontal air deflector is automatically set to the proper angle suitable for each operation. The deflector can be swung up and down continuously and also set to the desired angle using the “ (AUTO SWING)” button.

● 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 operation is stopped, the horizontal air deflector

moves and stops at the position where the air outlet closes.

CAUTION

!

● In “Cooling” operation, do not keep the horizontal air

deflector swinging for a long time. Some dew may form on the horizontal air deflector and dew may drop.

Adjustment of the conditioned air to the left and right.

2

Hold the vertical air deflector as shown in the figure and adjust the conditioned air to the left and right.

When cooling, dehumidifying

Vertical

about 15

about 60

– 14 –

HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER

When using the remote control, if there is no response from the air conditioner unit and or the remote control has fading and dim displays, the batteries in the remote control device need to be removed and replaced with new ones

Remove the cover as shown in the figure and

1

take out the 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.

3. Use high quality and high performance AAA batteries to avoid short operating life and electrolyte leakages

– 15 –

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.

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.

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

Do Not Forget To Clean The Air Filter

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 Adjust Suitable Temperature

For Baby And Children

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.

– 16 –

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.

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.

– 17 –

To prevent interference, place at least 1m away.

Inverter-type fluorescent lamp.

TV

ATTACHING THE AIR CLEANSING FILTERS

!

CAUTION

Cleaning and maintenance must be carried out only by qualified 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 filter.

2

● Push upward to release the claws and pull out the

filter.

Attaching the air cleansing filters to the filter.

3

● Attach the air cleansing filters to the frame by gently

compress its both sides and release after insertion into filter frame.

Claws

(4 places)

!

CAUTION

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

Attach the filters.

4

● Attach the filters by ensuring that the surface written

“FRONT” is facing front.

● After attaching the filters, push the front panel at

three arrow portion as shown in figure and close it.

NOTE

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

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

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

● Air cleansing filters are washable and reusable up to 20 times by using vacuum cleaner or water rinse

under running tap water. Type number for this air cleansing filter is <SPX-CFH20>. Please use this number for ordering when you want to renew it.

● Do not operate the air conditioner without filter. Dust may enter the air conditioner and fault may occur.

– 18 –

MAINTENANCE

!

CAUTION

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

1. AIR FILTER

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

PROCEDURE

Open the front panel and remove the filter

1

● Gently lift and remove the air cleansing filter

from the air filter frame.

Vacuum dust from the air filter and air cleansing

2

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

● Re-insert the air cleansing filter to the filter

3

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

● After attaching the filters, push the front panel

at three arrow portions as shown in figure and close it.

NOTE:

● Air cleansing filter 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.

!

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 use detergent on the air cleansing filter as some detergent may deteriorate the filter

electrostatic performance.

– 19 –

2. CLEANING OF FRONT PANEL

● Wipe it with a soft dry cloth.

● When it is excessively dirty, wipe with a soft cloth

soaked in lukewarm water or neutral detergent. Then wipe thoroughly with a soft dry cloth.

● Wipe the remote controller thoroughly with a soft

dry cloth.

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

Attaching the Front Panel

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

slightly, pull it out forward.

!

CAUTION

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

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

Hole

Flange

Projection

A

B

E

C

N

E

Z

I

N

I

D

– 20 –

!

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.

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

breaker, the danger of electric shock exists.

NOTE

If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service/ parts centers.

!

CAUTION

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

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

Confirm

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

– 21 –

AFTER SALE SERVICE AND WARRANTY

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS

CONDITION CHECK THE FOLLOWING POINTS

● Is the fuse all right?

When it does not operate

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

Notes

● In quiet or stop 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

● 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.

● Is the voltage extremely high or low?

● Is the circuit breaker “ON”?

● Was the air filter cleaned?

● 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?

gradually warmed as operation stops.

●

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.

– 22 –

This product conforms with the protection requirements of council directives 89/336/EEC relating to electromagnetic compatibility and 73/23/EEC relating to electrical equipment designed for use within certain voltage limits.

Please note: 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.

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:

Minimum Maximum

Indoor Dry bulb °C21 32

Wet bulb °C15 23

Outdoor Dry bulb °C21 43

Wet bulb °C15 26

MEMO

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– 23 –

MEMO

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– 24 –