Hitachi RAS-DX18CF, RAC-DX18CF, RAS-DX10CET, RAC-DX10CET, RAS-SX10CET Instruction Manual

SPLIT TYPE AIR CONDITIONER

INDOOR UNIT/OUTDOOR UNIT

MODEL

RAS-DX18CF / RAC-DX18CF

OUTDOOR UNIT INDOOR UNIT

ENGLISH

RAS-DX18CF

RAC-DX18CF

Instruction manual Page 1~24

To obtain the best performance, please read this instruction manual completely.

Arahan pengendalian Muka surat 25~48

Untuk mendapatkan prestasi yang tinggi, sila baca arahan ini sepenuhnya.

– 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 ﬁ re may occur if you reconstruct

the unit by yourself.

● Please ask your sales agent or qualiﬁ ed technician for the installation

of your unit. Water leakage, short circuit or ﬁ re may occur if you install

!

WARNING

!

CAUTION

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 speciﬁ ed piping set for R410A. Otherwise, this may

result in broken copper pipes or faults.

● A circuit breaker should be installed depending on the mounting site of

the unit. Without a circuit breaker, the danger of electric shock exists.

● Do not install the unit near a location where there is ﬂ ammable gas.

The outdoor unit may catch ﬁ re if ﬂ ammable gas leaks around it.

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

The sign in the ﬁ gure indicates prohibition.

W

A R N

N G

!

W

A R N

N G

!

I

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 ﬁ re 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 ﬁ re.

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

I

shock or ﬁ re 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.

PRECAUTIONS DURING OPERATION

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

● Do not insert a ﬁ nger, a rod or other objects into the air outlet or inlet. As

the fan is rotating at a high speed, it will cause injury. Before cleaning, be sure to stop the operation and turn the breaker OFF.

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

● During thunder storm, disconnect and turn off the circuit breaker.

● This unit has UV LED which emits ultra violet light.

AVOID DIRECT EYE EXPOSURE.

– 2 –

!

PRECAUTIONS DURING OPERATION

● The product shall be operated under the manufacturer speciﬁ cation and

not for any other intended use.

● Do not attempt to operate the unit with wet hands, this could cause fatal

accident.

● 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, ﬁ rm and

without defect. If not, the outdoor unit may collapse and cause danger.

● Do not splash or direct water to the body of the unit when cleaning it as

this may cause short circuit.

● Do not use any aerosol or hair sprays near the indoor unit. This chemical

can adhere on heat exchanger ﬁ n and blocked the evaporation water ﬂ ow to drain pan. The water will drop on tangential fan and cause water

splashing out from indoor unit.

!

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

C A U T

I O N

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.

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

ENGLISH

● Do not place plants directly under the air ﬂ ow as it is bad for the plants.

● When operating the unit with the door and windows opened, (the room humidity is always above

80%) and with the air deﬂ ector facing down or moving automatically for a long period of time, water will condense on the air deﬂ ector and drips down occasionally. This will wet your furniture. Therefore, do not operate under such condition for a long time.

● If the amount of heat in the room is above the cooling 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 can be used by children aged from 8 years and above and persons with reduced

physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

Children shall not play with the appliance. Cleaning and user maintenance shall not be made

by children without supervision.

● 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.

– 3 –

NAMES AND FUNCTIONS OF EACH PART

INDOOR UNIT

Pre-ﬁ lter

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 deﬂ ector (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)

●

Vertical deﬂ ector

OUTDOOR UNIT

MODEL NAME AND DIMENSIONS

MODEL

Drain pipe

Condensed water drain to outside.

Connecting cord and insulation pipe for piping

Air inlet (Back, Left side)

Air outlet

WIDTH (mm)

HEIGHT (mm)

DEPTH (mm)

RAS-DX18CF

RAC-DX18CF

900

750

– 4 –

300

570

230

280

INDOOR UNIT INDICATORS

OPERATION LAMP

This lamp lights during operation.

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 ﬁ lter. The lamp goes

out when the “

pressed while the device is on “STANDBY MODE”.

UV FRESH

UV Fresh lamp can be ON or OFF by press the operation button. Please refer to page 10 for detail operation.

AIR SLEEP

This lamp lights when the Air Sleep function is in operation. Please refer to page 9 for detail operation.

(AUTO SWING)” button is

ENGLISH

OPERATION INDICATOR

TEMPORARY SWITCH

Use this switch to start and stop when the remote controller does not work.

● 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. Signal range to reach indoor unit is about 7 meters. If inverter lamp is used, the range of control may be shorter. This unit can be ﬁ xed on a wall using the ﬁ xture provided. Before ﬁ xing 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.

● AIR SLEEP button

Use this button to set a comfortable air sleep temperature 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

● POWERFUL MODE buttonA

Use this button to deliver faster and more comfortable air-conditioning or start operation.TO

● STOP button

Press this button to stop operation only.

● ONE-TOUCH SILENT button

Use this button to set silent condition.

● FAN SPEED selector

This determines the fan speed. Each time you press this button, the intensity of circulation will change from (AUTO) to (HI) to (MED) to (LOW) to (SILENT).

● AUTO SWING button

Controls the angle of the horizontal air deﬂ ector.

● TEMPERATURE button

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

● OFF-TIMER button

Select to turn OFF time.

● ON-TIMER button

Select to turn ON time.

.)

Precautions for Use

● Do not put the remote controller in the following places.

● In direct sunlight.

● In the vicinity of a heater.

● Handle the remote controller carefully. Do not drop it on the

ﬂ

oor, and protect it from water.

● Once the outdoor unit stops, it will not restart for about 3

minutes (unless you turn the power switch off and on or unplug the power cord and plug it in again). This is to protect the device and does not indicate a failure.

– 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 (COOLING) button so that the display indicates

(COOL).

1

Cooling operation starts with a beep. 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.

ENGLISH

2

3

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

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

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

(HI) : Hi fan speed mode.

(MED) : Medium fan speed mode.

(LOW) : Low fan speed mode.

(SILENT) : Silent fan speed mode.

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 somewhat depending on conditions.

(FAN SPEED)

STOP

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

Press the button to stop operation.

only have to press the settings next time.

– 7 –

(COOLING) button to repeat the same

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

2

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).

The range of 20-26˚C is recommended as the

room temperature for dehumidifying.

STOP

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

Press the button to stop operation.

only have to press the

(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. You might feel a bit colder in dehumidifying operation.

– 8 –

AIR SLEEP MODE

With the air sleep sensor, the air conditioner can monitor the activity/movement level in a room and adjust the temperature and humidity automatically, thus achieving the purpose of comfortable sleep environment and enegry saving.

Press the (Air Sleep) button.

ENGLISH

1

2

● Air sleep operation starts with a signal received sound “beep”. (Air

sleep lamp at indoor unit lights during operation.)

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 comfortable sleep.

● At ﬁ rst unit will operate at cooling mode for 1 hour at setting conditions.

● If there is only small activity/movement or sleep is conﬁ rmed, the

temperature will be increased 1°C and the unit will continue running for 1 hour. The fan speed will be changed to SILENT.

● If the condition of activity in the room stable, then the unit will continue

running with the temperature increased of another 1°C.

● During running Air Sleep, if big activity/movement is detected, the

temperature and fan speed will be resume back at previous setting.

● The desire fan speed can be selected by press button.

To resume back to the SILENT fan speed, please press

CANCELLATION of AIR SLEEP Operation

Cancel Condition

Operation mode after cancel

button.

Press button.

Press button

Stop operation

COOLING operation

DEHUMIDIFYING operation

NOTE

(1) POWERFUL operation : POWERFUL operation will be a priority

over the AIR SLEEP operation.

NOTE

The sensor detects changes to the infrared generated by human bodies. Therefore, the accuracy of sensor may be affected in the following cases:

■ The activity level is very low (reading, watching TV, etc.) or human bodies are blocked by a screen, cabinet or glass board.

■ The indoor temperature is very high and exceeds or approaches the human body temperature (when the refrigeration just begins).

■ The person wears thick clothes and turns his/her back to the air conditioner.

■ Curtains or plant leaves swing due to pet movement or airﬂ ow.

– 9 –

HOW TO ACTIVATE AND TO CANCEL UV FRESH

After activation of any operation button ( or or ), lamp will ON. By pressing

the operation button again which is set previously, it can OFF the

CONDITION 1

Press or or

Press or or again

CONDITION 2

Press or or

– During ﬁ rst time usage.

Operation Button

– After enter standby mode.

Operation Button

lamp.

Lamp

ON

OFF

ON

Lamp

ON

Press or or again

Press

Press or or

Press or or again

Press

Press or or

Press or or again

Note:

During ﬁ rst time usage, if

or to ON the Lamp.

Lamp is OFF, it is not malfunction. Press operation button or

OFF

ON

OFF

ON

OFF

– 10 –

ONE-TOUCH SILENT MODE

Press the button.

● One time push to activate Super Silent symbol.

1

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

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

fan speed will be changed to SILENT.

● Press again to stop it, unit will continue to operate in cooling

mode base on previous setting.

CANCELLATION of ONE-TOUCH SILENT Operation

Cancel Condition

Press button.

Press button

Press

button

Operation mode after cancel

Stop operation

POWERFUL operation

Cooling operation based on

previous fan speed

ENGLISH

NOTE:

Under ONE-TOUCH SILENT operation and quiet environment, phenomena like ﬂ owing noise of refrigerant in the refrigerating cycle may occur, but this is normal for the operation.

– 11 –

ONE-TOUCH POWERFUL MODE

Press the button.

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

● Unit will be forced operate in (COOL) with POWERFUL

MODE fan speed for 60 minutes, within this 60 minutes, fan

1

speed may varies. temperature and fan speed setting display remain unchanged. (Operation lamp at indoor unit is blinking).

● After 60 minutes, operation lamp stop blinking and indicator

will disappear while unit will be in previous mode setting. Temperature and fan speed will change to previous setting.

● Air blow sound will be slightly high due to forced operation.

CANCELLATION of POWERFUL Operation

Indicator appear during this period while

If feeling so cold, cancel this powerful mode as mentioned in “CANCELLATION of POWERFUL operation”.

Cancel Condition

Press or SLEEP timer time is up

key press

Press or

60 minutes time is up

Operation mode after cancel

Stop operation

DEHUMIDIFYING operation

AIR SLEEP operation

COOLING operation in

previous setting

NOTE

(1) OFF TIME setting : OFF timer will be a priority over

the POWERFUL operation time.

(2)

ON TIME setting : POWERFUL operation will be a

priority over the ON timer operation time.

– 12 –

HOW TO SET THE TIMER

■ ON Timer and OFF Timer are available.

OFF Timer Reservation

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.

ON Timer Reservation

■ Operation stop at setting time

ENGLISH

ON TIME setting

● Select the ON TIMER by pressing the (ON)

Button.

● Setting time will change according to the below

sequence.

■ 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 deﬂ ector is automatically set to the proper angle suitable for each operation. The deﬂ ector can be swung up and down continuously and also set to the desired angle

using the “

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

the horizontal air deﬂ button is pressed again, the deﬂ ector stops in its current position. Several seconds (about 6 seconds) may be required before the deﬂ

● Use the horizontal air deﬂ ector within the adjusting range

shown on the right.

● When the operation is stopped, the horizontal air deﬂ ector

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

(AUTO SWING)” button.

ector swings up and down. If the

ector starts to move.

CAUTION

!

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

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

Adjustment of the conditioned air to the left and right.

2

Hold the second vertical air deﬂ ector of each set of vertical air deﬂ ectors from right as shown in the ﬁ gure and adjust the conditioned air to the left and right.

WARNING

Do not insert a ﬁ nger, a rod or other objects into the air outlet or inlet as the fan is rotating at a high speed, it will cause injury. Before any cleaning or adjusting the deﬂ ectors, be sure to switch OFF the operation.

– 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 ﬁ gure 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

ENGLISH

– 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

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

Caution

!

Do not close the room for a long period of time. Occasionally open the door and windows to allow the entrance of fresh air.

Do Not Forget To Clean The Pre-Filter

Dusty pre-ﬁ lter will reduce the air volume and the cooling efﬁ ciency. To prevent from wasting electric energy, please clean the ﬁ lter every 2 weeks.

At night, please use the “OFF or ON timer operation mode”, together with your wake up time in the morning. This will enable you to enjoy a comfortable room temperature. Please use the timer effectively.

Please Adjust Suitable Temperature

For Baby And Children

Please pay attention to the room temperature and air ﬂ ow direction when operating the unit for baby, children and old folks who have difﬁ culty 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.

ENGLISH

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 –

ATTACHING THE AIR PURIFYING FILTERS

CAUTION

!

Cleaning and maintenance must be carried out when ﬁ lter lamp lights. 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 Pre-ﬁ lter

2

● Push upward to release the claws and pull out the

Pre-ﬁ lter.

Attaching the air purifying ﬁ lters

3

● Attach the air purifying ﬁ lters to the frame by gently

compress its both sides and release after insertion into Pre-ﬁ lter frame.

CAUTION

!

Do not bend the air purifying ﬁ lter as it may cause damage to the structure.

Please do not smell direct from source of ﬁ lter.

Attach the Pre-ﬁ lters

4

● Attach the Pre-ﬁ lters by ensuring that the surface

written “FRONT” is facing front.

● After attaching the Pre-ﬁ lters, push the front panel at

three arrow portions as shown in ﬁ gure and close it.

NOTE

● In case of removing the air purifying ﬁ lters, please follow the above procedures.

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

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

● Air purifying ﬁ lters are not washable. It is recommended to use vacuum to clean it. It can be use

for 1 year time. Type number for this air purifying ﬁ lter is <SPX-CFH22>. Please use this number for ordering when you want to renew it.

● Do not operate the air conditioner without Pre-ﬁ lter. Dust may enter the air conditioner and fault

may occur.

– 18 –

MAINTENANCE

!

CAUTION

Cleaning and maintenance must be carried out when ﬁ lter lamp lights. Before cleaning, stop operation and switch off the power supply.

1. PRE-FILTER

Clean the Pre-ﬁ lter, as it removes dust inside the room. In case the Pre-ﬁ lter is full of dust, the air ﬂ ow will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to

clean the Pre-ﬁ lter following the procedure below.

Open the front panel and remove the Pre-ﬁ lter

1

● Gently lift and remove the air purifying ﬁ lters

from the air purifying ﬁ lter frame.

ENGLISH

Vacuum dust from the Pre-ﬁ lter and air purifying

2

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

● Re-insert the air purifying ﬁ lter to the ﬁ lter

3

NOTE:

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

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

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

● After attaching the Pre-ﬁ lters, push the front

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

!

CAUTION

● Do not wash with hot water at more than 40°C. The pre-ﬁ lters may shrink.

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

to the sun. The pre-ﬁ lters may shrink.

● Do not use detergent on the air purifying ﬁ lter as some detergent may deteriorate the air purifying

ﬁ lter electrostatic performance.

– 19 –

2. CLEANING OF FRONT PANEL

● Remove the front panel and wash with clean

water. Wash it with a soft sponge. After using neutral detergent, wash thoroughly with clean water

● When front panel is not removed, wipe it with

a soft dry cloth. Wipe the remote controller thoroughly with a soft dry cloth.

● Wipe the water thoroughly.

If water remains at indicators or signal receiver of indoor unit, it causes trouble.

Method of removing the front panel. Be sure to hold the front panel with both hands to detach and attach it.

.

Removing the Front Panel

● When the front panel is fully opened with both

hands, push the right arm to the inside to release it, and while closing the front panel

● Move the projections of the left and right

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

Attaching the Front Panel

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.

– 20 –

!

CAUTION

● Please use earth line.

Do not place the earth line near water or gas pipes, lightning-conductor 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.

, or the earth

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 qualiﬁ ed service personnel. Before cleaning, stop operation and switch off the power supply.

REGULAR INSPECTION

ENGLISH

PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONNEL EITHER EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.

1

2

3

Is the earth line disconnected or broken?

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

Is the plug of power line ﬁ rmly 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

● Is the voltage extremely high or low?

● Is the circuit breaker “ON”?

● Was the air ﬁ lter cleaned?

● Does sunlight fall directly on the outdoor unit?

● Is the air ﬂ ow of the outdoor unit obstructed?

● Are the doors or windows opened, or is there any source

of heat in the room?

● Is the set temperature suitable?

Notes

● In quiet or stop operation, the following phenomena may occassionally

occur, but they are not abnormal for the operation. (1)

Slight ﬂ owing noise of refrigerant in the refrigerating cycle. Slight rubbing noise from the fan casing which is cooled and then

(2)

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 ﬁ lter and the evaporator regularly must be cleaned to reduce the odor.

● Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above

inspections. Inform your agent of the model of your unit, production number, date of installation. Please also inform him regarding the fault.

● Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach

the speciﬁ ed capacity.

– 22 –

Please note: On switching on the equipment, particularly when the room light is dimmed, a slight brightness ﬂ uctuation 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 °C 21 32 Wet bulb °C 15 23 Outdoor Dry bulb °C 21 43 Wet bulb °C 15 26

MEMO

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

ENGLISH

– 23 –

MEMO

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– 24 –