Hitachi RAS-DX24CHK User manual

-฀1฀-–1–
ILGNE
INDOOR UNIT/OUTDOOR UNIT
SPLIT TYPE AIR CONDITIONER
MODEL
Instruction manual Page1~22Toobtainthebestperformanceandensureyearsoftroublefreeuse,pleasereadthisinstructionmanualcompletely.2~4
ENGLISH
34TINU฀ROODNITINU฀ROODTUO
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RAS-DX24CHK/RAC-DX24CHK
RAC-DX24CHK
RAC-DX24CHK

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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฀signs฀indicate฀the฀following฀meanings.฀฀฀Make฀sure฀to฀connect฀earth฀line.฀฀฀The฀sign฀in฀the฀figure฀indicates฀prohibition฀฀฀Indicates฀the฀instructions฀that฀must฀be฀followed.Please฀keep฀this฀manual฀after฀reading.
PRECAUTIONS DURING INSTALLATION
WARNING Do฀not฀reconstruct฀the฀unit.Water฀leakage,฀fault,฀short฀circuit฀or฀fie฀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.CAUTION 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฀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
W
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GShould฀abnormal฀situation฀arises฀(like฀burning฀smell),฀please฀stop฀operating฀the฀unit฀and฀turn฀off฀the฀circuit฀breaker.฀Contact฀your฀agent.฀Fault,฀short฀circuit฀or฀firemay฀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฀firemay฀occur฀if฀you฀remove฀and฀reinstall฀the฀unit฀yourself฀improperly.
PRECAUTIONS DURING OPERATION
W
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GAvoid฀an฀extended฀period฀of฀direct฀air฀flwfor฀your฀health.Do฀not฀put฀objects฀like฀thin฀rods฀into฀the฀panel฀of฀blower฀and฀suction฀side฀because฀the฀high-speed฀fan฀inside฀may฀cause฀danger.Do฀not฀use฀any฀conductor฀as฀fuse฀wire,฀this฀could฀cause฀fatal฀accident.During฀thunder฀storm,฀disconnect฀and฀turn฀off฀the฀circuit฀breaker.o฀If฀the฀supply฀cord฀is฀damaged,฀it฀must฀be฀replaced฀by฀the฀manufacturer,฀it’s฀service฀agent฀or฀similarly฀qualified฀persons฀in฀order฀to฀avoid฀a฀hazard．
ENGLISH
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PRECAUTIONS DURING OPERATION
W
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GThe฀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.•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.•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฀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฀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฀฀Young฀children฀should฀be฀supervised฀to฀ensure฀that฀they฀do฀not฀play฀with฀the฀appliance.adequately฀supervised฀by฀a฀responsible฀person฀to฀ensure฀that฀they฀can฀use฀this฀appliance฀safely.••
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NAMES AND FUNCTIONS OF EACH PART
ENGLISH
INDOOR UNIT
AIR FILTER
To฀prevent฀dust฀from฀coming฀into฀the฀door฀unit.฀(Refer฀page฀17)INDOOR UNIT INDICATORS
Light฀indicator฀showing฀the฀operating฀condition.฀(Refer฀page฀6)FRONT PANEL
HORIZONTAL DEFLECTOR •VERTICAL
DEFLECTOR (AIR OUTLET)
(Refer฀page฀14)REMOTE CONTROL
Send฀out฀operation฀signal฀to฀the฀indoor฀unit.฀So฀as฀to฀operate฀the฀whole฀unit.(Refer฀page฀7)OUTDOOR UNIT
DRAIN PIPE
Condensed฀water฀drain฀to฀outside.CONNECTING CORD
AIR INLET (BACK, LEFT SIDE)
AIR OUTLET
MODEL NAME AND DIMENSIONS
MODELWIDTH(mm)HEIGHT(mm)DEPTH(mm)RAS-DX24CHKRAC-DX24CHK7922996001050290220
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SUPPORT PANEL

CAUTION
Turn฀off฀the฀circuit฀breaker฀or฀power฀for฀a฀long฀period.OPERATION INDICATOR
TEMPORARY SWITCH
When฀the฀remote฀control฀device฀is฀not฀functioning,฀use฀the฀Temporary฀Switch฀mode(1)฀W฀฀hen฀the฀Temporary฀Switch฀is฀pressed,฀the฀unit฀will฀operate฀as฀per฀the฀previous฀setting.(2)฀฀Press฀the฀Temporary฀Switch฀a฀second฀time฀will฀stop฀the฀operations฀of฀the฀air฀conditioner฀unit.AUTO RESTART FUNCTION
In฀the฀event฀of฀power฀failure,฀the฀air฀conditioner฀will฀restart฀automatically.In฀the฀event฀of฀power฀failure฀during฀TIMER฀operation,฀the฀timer฀will฀be฀reset฀and฀the฀unit฀will฀begin฀or฀stopoperating฀under฀a฀new฀timer฀setting.
When฀the฀operation฀is฀done฀using฀the฀temporary฀switch฀after฀the฀power฀source฀is฀turnedoff฀and฀turn฀on฀again,฀the฀operation฀is฀done฀in฀automatic฀mode.
TEMPORARY
SWITCH
TEMPORARY
SWITCH
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switch฀if฀the฀unit฀is฀not฀be฀operated

NAMES AND FUNCTIONS OF REMOTE฀CONTROLLERREMOTE CONTROLLER
• This controls the operation of the indoor unit.
Signal range to reach air-conditioner is about 7 meters. If indoor lighting is controlled
electronically, the range of control may be shorter, in some cases, the control signal may not be
received.
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.
• Handle the remote controller with care.
Dropping it or getting it wet may compromise its signal transmission capability.
Precautions for Use
Signal Transmission
POWERFUL Button
Press฀this฀button฀to฀start฀powerful฀operation.฀(฀Page฀฀1฀฀1)TEMPERATURE Button
Room฀temperature฀setting.฀Value฀will฀change฀quicker฀when฀keep฀pressing.FAN SPEED Button
Select฀the฀fan฀speed฀for฀eachmode.AUTO SWING (Horizontal)
Button
Control฀the฀angle฀of฀the฀horizontal฀air฀defl฀ector.(฀Page฀฀1฀4฀฀)AUTO SWING (Vertical)
Button
Control฀the฀angle฀of฀the฀vertical฀air฀defl฀ector.฀(Page฀฀1฀4฀฀฀฀)Transmission Sign
The฀transmission฀sign฀blinks฀when฀a฀signal฀has฀been฀sent.SLEEP button
Use฀this฀button฀to฀set฀the฀sleep฀timer.ECO Button
Use฀this฀button฀to฀set฀the฀ECO฀mode.(฀Page฀฀1฀2)OFF TIMER Button
Select฀the฀turn฀OFF฀time.(฀Page฀฀1฀฀1)ON TIMER Button
Select฀the฀turn฀ON฀time.(฀Page฀฀1฀฀1)START/STOP button
Press฀this฀button฀to฀start฀operation.฀Press฀it฀again฀to฀stop฀operation.(฀Page฀฀1฀3)
ENGLISH
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• 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 floor, and
away from water.
•Once the outdoor unit stops, it will not restart for about 3 minutes (unless
you turn the power switch off and on
).
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.

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ENGLISH
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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.
START
STOP
COOLING OPERATION
Use the device for cooling when the outdoor temperature is 7 to 43°C.
If humidity is very high (over 80%) indoors, some dew may form on the air outlet grille of the indoor
unit.
Press the FUNCTION selector so that the display indicates
(COOL).
1
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
(HI) : Economical as the room will become cool quickly.
(MED) : Quiet.
(LOW) : More quiet.
(SILENT) : Silent.
2
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.
3
As the settings are stored in memory in the remote controller, you
only have to press the (START/STOP) button next time.
or LOW or SILENT automatically when the
preset temperature has been reached.
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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 (START/STOP) button.
START
STOP
Press the FUNCTION selector so that the display indicates
(DEHUMIDIFY).
Press the (FAN SPEED) button to select LOW and SILENT.
1
When you want to change the operation mode, please use the
FUNCTION selector.
Set the desired temperature is available.
Dehumidifying Function
ENGLISH
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2
2
Set฀the฀desired฀room฀temperature฀with฀the฀TEMPERATURE฀button฀(the฀display฀indicates฀the฀setting).
°
C
The฀range฀of฀20-26°C฀is฀recommended฀as฀the฀room฀temperature฀for฀dehumidifying.When฀the฀room฀temperature฀is฀higher฀than฀the฀temperature฀setting:฀The฀device฀will฀dehumidify฀the฀฀educing฀the฀room฀temperature฀to฀the฀preset฀level.When฀the฀room฀temperature฀is฀lower฀than฀the฀temperature฀setting:฀Dehumidifying฀will฀be฀performed฀atemperature฀setting฀slightly฀lower฀than฀the฀current฀room฀temperature,฀regardless฀of฀the฀temperature฀unction฀will฀stop฀(the฀indoor฀unit฀will฀stop฀emitting฀air)฀as฀soon฀as฀the฀room฀temperature฀he฀setting฀temperature.room,฀rthe฀tsetting.฀The฀fbecomes฀lower฀than฀t

Press the (START/STOP) button. Fan operation starts with a
beep.
Press the button again to stop operation.
START
STOP
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).
1
Press the (FAN SPEED) button.
(HI) : The strongest air blow.
(MED) : Quiet.
(LOW) : More quiet.
(SILENT) : Silent.
2
FAN SPEED (AUTO) … When the AUTO fan speed mode is set in the cooling operation:
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฀Operation stop at setting time
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.
1฀hour฀intervalTIMER RESERVATION
฀ON Timer and OFF Timer are available.
POWERFUL OPERATION
• During POWERFUL operation, cooler air will be blown out from indoor unit for COOLING or
respectively.
Press the (POWERFUL) button during operation.
•฀"฀" is displayed on the LCD.
START
Press the
Press the (START/ STOP) button. or
(POWERFUL) button again.
•฀"฀" disappears from the LCD.
CANCEL
• When ECO mode is selected, POWERFUL operation is cancelled.
• During POWERFUL operation, capacity of the air conditioner will not increase
฀–if the air conditioner is already running at maximum capacity.
• After auto restart, POWERFUL operation is cancelled and previous operation shall start.
2
1
ON TIME setting
• Select the ON TIME by pressing the (ON) Button.
• Setting time will change according to the below sequence
when you press the button.
Timer฀off1 hour interval
Timer฀on฀By pressing (POWERFUL) button during HEATING, DEHUMIDIFYING, COOLING F ,
••,AN
NOTE
operation,
operation
ENGLISH
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dehumidifying operation.
the air conditioner performs at maximum power. By the way target temperature will reduce during
–just befor defrost operation (when the air conditioner is running in HEATING operation).

ECO OPERATION
฀Energy saving operation by changing set temperature and by limiting the maximum power consumption
value.
Press (ECO) button during operation.
•฀"฀" is displayed on the LCD.
• Energy saving operation will start by changing
the set temperature higher and saving
operation power consumption.
START
Press (START/STOP) button.
• Press (ECO) button again.
•฀"฀" disappears from the LCD.
CANCEL
NOTE
• In case the power consumption is already low,ECO operation will not reduce the power
consumption.
• By pressing (POWERFUL) button, ECO operation is cancelled.
• After auto restart, ECO operation is cancelled and previous operation mode shall start.
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HOW TO SET THE SLEEP TIMER
SLEEP
IndicationMode
Sleep Timer
sruoh3sruoh2ruoh1
Sleep timer off
Sleep Timer: The device will continue working for the desired 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.
If you set the sleep timer when the off-timer or on-timer has been set earlier, the sleep timer
becomes effective instead of the off-timer or on-timer set earlier.
Press (START/STOP) button.
MRoom air conditioner will
Press (SLEEP) button again until off time, “ ” and
controller display.
MA beep sound emitted from indoor unit and the (TIMER) lamp
on the indoor unit turns off.
MSLEEP TIMER operation is cancelled.
number of hour disappear from the remote
NOTE
7 sruoh
Mswitch off.
ENGLISH
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ADJUSTING THE AIR DEFLECTORS
1
Adjustment of the conditioned air in the upward and downward
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
(HORIZONTAL ) )” button.
• 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.
CAUTION
2
Adjustment of the conditioned air to the left and right.
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
• If the “ (AUTO SWING(HORIZONTAL ))” 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.
• Use the horizontal air deflector within the adjusting range
shown in the right.
• When the operation is stopped, the horizontal air deflector
moves and stops at the position where the air outlet closes.
• If the “ (AUTO SWING(VERTICAL ))” button is pressed once,
the deflectors will start to swing right and left. If the button is pressed
again, the deflector will stop in the current position.
Push฀and฀pull฀to฀the฀dirction฀of฀arrow
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3. Use high quality and high performance AAA batteries to
aviod short operating life and electrolyte leakage.

THE IDEAL WAYS OF OPERATION
Suitable Room Temperature
Warning
Freezing฀temperature฀is฀bad฀for฀health฀and฀a฀waste฀of฀electric฀power.฀Install curtain or blinds
It฀is฀possible฀to฀reduce฀heat฀entering฀the฀room฀through฀windows.Ventilation
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.฀Effective Usage Of Timer
At฀night,฀please฀use฀theĀsleep฀timer฀operation฀modeā,฀together฀with฀your฀wake฀up฀time฀in฀the฀morning.฀This฀will฀enable฀you฀to฀enjoy฀a฀comfortable฀room฀temperature.฀Please฀use฀the฀timer฀effectively.Do Not ForgetTo 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.฀
Temperature
n
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.
(The฀ideal฀temperature฀difference฀between฀outdoor฀and฀indoor฀is฀about฀f5°C).
ENGLISH
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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฀turn฀off฀power฀switch.฀Or฀the฀฀indoor฀unit฀still฀consumes฀about฀1W฀in฀the฀operation฀control฀circuit฀even฀if฀it฀is฀in฀“OFF”฀mode.
OFF
฀฀When Lightning Occurs
Warning
To฀protect฀the฀whole฀unit฀during฀lightning,฀please฀stop฀operating฀the฀unit฀and฀turn฀off฀the฀power฀switch.฀฀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.To฀preventinterference,place฀at฀least1m฀away.TVInverter-typefluorescentlamp.
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wer฀itchPoSw

MAINTENANCE OF THE UNITS
CAUTION
Ensure฀that฀the฀unit฀is฀not฀in฀operation฀and฀all฀power฀supply฀has฀been฀disconnected฀before฀cleaning฀the฀units.•While฀holding฀both฀edges฀of฀the฀front฀panel,฀open฀up฀and฀lift฀the฀front฀panel฀and฀push฀in฀to฀park฀at฀the฀securedpositionFront฀panel฀Front฀cabinet฀•Slightly฀lift฀up฀the฀dust฀filter฀screen,฀release฀the฀latch฀clips฀[2฀places]฀located฀at฀the฀bottom฀of฀the฀front฀cabinetand฀move฀the฀dust฀filter฀screen฀downwards฀to฀remove฀it฀from฀the฀unitFront฀panel฀Dust฀filter฀screenLatch฀clipCAUTION
ENGLISH
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Dust Filter Screen
Dust฀filter฀screens฀are฀installed฀to฀remove฀the฀indoor฀dust฀particles฀hence฀they฀should฀be฀kept฀clean฀at฀all฀times.฀They฀should฀be฀cleaned฀at฀each฀machine฀operation฀cycle฀of฀approximately฀100฀hours.฀Excessive฀dust฀collected฀at฀the฀dust฀filter฀screen฀will฀block฀the฀air฀flow,฀reduce฀the฀cooling฀capability฀and฀could฀increase฀operating฀noise.฀Therefore฀the฀dust฀filter฀screen฀should฀be฀cleaned฀as฀per฀instructions฀given฀below:Cleaning฀Instructions(1)Removing฀the฀dust฀filter฀scree•Do not use hot water (40 C and above) to rinse the dust filter screen, otherwise the screen will warp and
get distorted. After rinsing, shake the dust filter screen to rid off all remaining water droplets and place it at a
cool shaded place to dry. Avoid placing the dust filter screen under direct sunlight, otherwise the screen will
warp and get distorted.
Do not operate the air conditioner without the dust filter screen installed, otherwise the ingress of dust
into the air conditioner unit will cause breakdowns.
(2) Use a vacuum cleaner to vacuum the dust accumulated from the dust filter screen. If the accumulated dustis
too much to be removed by vacuum cleaning, apply mild detergent and flush the dust from the dust filter
screen with water. After thorough rinsing, leave the dust filter screen at a cool shaded place to dry.
(3) Re-install the dust filter screen to its originalposition (With “FRONT”marker facing front). Slightly lift up the
opened front panel and close it by returning it to its original position
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vacuum cleaner and take care to avoid damaging the evaporator fins

CLEANING THE FRONT PANEL
Front฀panel฀can฀easily฀get฀dirty.฀Use฀a฀soft฀cloth฀to฀wipe฀it.If฀the฀front฀panel฀is฀excessively฀dirty,฀wipe฀the฀front฀panel฀with฀a฀soft฀cloth฀either฀wet฀with฀warm฀water฀or฀containing฀a฀mild฀detergent฀after฀which,฀wipe฀dry฀the฀front฀panel฀with฀a฀soft฀dry฀cloth.Do฀not฀use฀hot฀water฀(50°C฀and฀above),฀volatile฀liquid,฀gasoline,acid,฀diluting฀agents฀or฀brushes฀to฀clean฀the฀front฀panel฀as฀they฀could฀damage฀the฀plastic฀finishing฀and฀paintwork฀of฀the฀front฀panel.CAUTION
Please฀disconnect฀the฀power฀switch฀before฀cleaning฀1.2.3.
Hot฀water฀(50°C)฀Volatile฀liquid,฀acid฀and฀others
TROUBLE SHOOTING THE UNIT BEFORE CONTACTING SERVICE STAFF TO CHECK AND RECTIFY
The฀air฀conditioner฀unit฀is฀not฀operating.•Check฀whether฀the฀power฀supply฀switch฀is฀properly฀connected.฀Abnormal฀air฀conditioning฀effects.Is฀the฀dust฀filter฀screen฀clogged฀with฀dust฀and฀dirt?Is฀the฀outdoor฀unit฀is฀located฀in฀direct฀sunlight?Is฀there฀any฀blockage฀to฀the฀air฀flow฀of฀both฀the฀indoor฀and฀outdoor฀units?Are฀the฀doors฀and฀windows฀being฀opened฀or฀is฀there฀any฀heat฀source฀inside฀the฀room?Is฀the฀temperature฀setting฀appropriate?4.5.
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the฀front฀panel.1.2.3.