C S -E 1 5 D K R W C U -E 1 5 D K R / C S -E 1 8 D K R W C U -E 1 8 D K R / C S -E 2 1 D K R S C U -E 2 1 D K R
9 Operating Instructions
9.1 . C S -E 1 5 D K R W
Thank you for purchasing Panasonic Air Conditioner
SAFETY PRECAUTIONS
I Definition
To prevent personal injury,
injury to others and property
damage, the following
instructions must be
followed.
Installation Precautions
Warning
Incorrect operation due to
failure to follow instructions
will cause harm or damage,
the seriousness of which is
classified as below:
Do not install, remove and reinstall the unit by yourself.
•
Improper installation will cause leakage, electric shock or fire. Please consult an authorized dealer or
specialist for the installation work.
Caution
Warning
•
•
•
This air conditioner must be earthed. Improper grounding will cause electric shock.
Ensure that the drainage piping is connected properly. Otherwise, water will leak.
This sign warns of death
or serious injury.
Current leakage protection equipment must be installed. Otherwise, electric shock or fire may
occur.
•
Do not install the unit in a potentially explosive atmosphere.
Caution
Operation Precautions
This sign warns of injury
or damage to property.
Warning
•
•
•
•
•
Do not share power outlet.
Do not modify power cord.
Do not use an extension cord.
Do not operate with wet hands.
•
•
Use specified supply cord.
The instructions to be
followed are classified by
the following symbols:
If the supply cord is damaged or needed
to be replaced, it must be replaced by
the manufacturer or its service agent or
a similarly qualified person in order to
avoid a hazard.
Do not insert finger or other objects into the
indoor or outdoor unit.
•
•
Remove the batteries if the unit is not
going to be use for a long period of time.
•
Do not attempt to repair the unit by
yourself.
New batteries of the same type must be
inserted following the polarity stated to
prevent malfunction of the remote control.
This symbol denotes
an action that is
PROHIBITED.
•
•
Do not use rechargeable (Ni-Cd) batteries.
Keep the remote control away from infants
and small children to prevent them from
accidentally swallowing the batteries.
•
In case of emergency or abnormal
condition (burnt, smell, etc) occurs, turn
off the power supply.
These symbols denote
actions that are
COMPULSORY.
Caution
•
•
•
•
•
Do not wash the unit with water, benzene,
thinner or scouring powder.
•
Ventilate the room regularly.
•
Pay attention as to whether the
installation rack is damaged after long
period of usage.
Do not use for other purposes such as
preservation of food.
Do not use any combustible equipment at
airflow direction.
•
•
Switch off the power supply before
cleaning or servicing.
Do not sit or place anything on the indoor
or outdoor unit.
Turn off the power supply if the unit is not
used for a long period of time.
Do not expose directly to cold air for a
long period.
Operation Condition (OC)
Use this air conditioner under the following temperature
range.
Safety Regulation
Indoor
Outdoor
DBT: Dry Bulb Temperature
WBT: Wet Bulb Temperature
The appliance is not intended for use by young children or infirm
person without supervision. Young children should be supervised to
ensure that they do not play with the appliance.
DBT WBT DBT WBT
Maximum Temperature (COOL)
Maximum Temperature (HEAT)
Minimum Temperature (COOL)
Minimum Temperature (HEAT)
32
30
16
16
23
–
43
24
-5
26
18
–
11
–
-5
-6
47
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HOW TO OPERATE
I Operation Details
Auto, Heat, Cool, Dry
AUTO - Automatic Operation
•
The unit will automatically select
the operation mode according
to the setting, outdoor and room
temperature. During operation mode
selection, power indicator blinks.
For every 30 minutes, the operation
mode is reselected.
1
operation.
HEAT - Heating Operation
•
Enables you to enjoy the warming
effect at your preferred setting
temperature.
Start the
•
•
For cold air prevention, air might
not blow out immediately and
power indicator blinks when
operation starts.
2
Also operates in defrost mode
(maximum 10 minutes) where by
the power indicator blinks. The
melted frost is drained at outdoor
unit and indoor fan is stopped.
Select the
desired
operation.
COOL - Cooling Operation
AUTO
•
Enables you to enjoy the cooling
effect at your preferred setting
temperature.
DRY
HEAT
COOL
DRY - Soft Dry Operation
•
Enables you to set the desired
temperature at low fan speed which
provides you with the dehumidifying
surroundings.
3
Set the
temperature.
(16°C~30°C)
G Supersonic air purifying device (super alleru-buster) operates
automatically while the air conditioner is switched on.
G Powerful, Quiet and Ion operations could be activated in all
operation modes.
G Press
button again to stop the operation.
Hint
G
To save electricity, close the curtains when using air conditioner to prevent sunlight and heat from coming in.
Troubleshooting
G
The room has a peculiar odour.
®
This may be a damp smell emitted by the wall, carpet, furniture or
clothing in the room.
G
Air conditioner does not cool or heat efficiently.
®
®
®
®
Ensure the temperature has been set correctly.
Ensure windows and doors have been closed properly.
Ensure filters are cleaned or replaced when necessary.
Ensure inlet and outlet vents of the units have not been obstructed.
49
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HOW TO OPERATE
I Operations Details
POWERFUL
Pow erful, Quiet, Ion, Fan Speed,
Air Sw ing
•
To achieve setting temperature
quickly.
QUIET
To provide a quiet environment.
•
ION
•
To provide fresh air effect by
producing negative ions.
QUIET
Enables quiet
operation.
•
Ion operation could be activated
independently.
ION
Enables ion
operation.
•
Press
operation.
button to stop the
FAN SPEED
•
To provide you with the various fan
speed selections.
POWERFUL
Enables
•
•
There are 5 levels of fan speed in
addition to automatic fan speed.
powerful
operation.
Automatic fan speed:
The speed of the indoor fan is
automatically adjusted according to
the operation.
AIR SWING
•
To ventilate air in the room.
FAN SPEED
Select fan speed.
•
There are 5 selections in addition to
automatic vertical air flow direction.
•
If automatic vertical airflow direction
has been set, the louver swings up
and down automatically.
AIR SWING
Adjust the vertical
or horizontal airflow
direction louver.
•
•
To ventilate air in the room.
There are 5 selections in addition
to automatic horizontal air flow
direction.
•
If automatic horizontal airflow
direction has been set, the louver
swings left and right automatically.
G Powerful and Quiet operations could not be activated at the
same time.
•
Please do not adjust the vertical and
horizontal airflow direction louver
manually.
G Powerful, Quiet and Ion operations could be cancelled by
pressing the respective button again.
Hints
G
If you wish to have the cool air blowing directly on you, set the airflow direction downward but not for an excessive length of time,
as it may harm your health.
G
Approximately 10% of electricity can be saved if you set the temperature 1°C higher in cooling operation or 2°C lower in heating
operation than the desired temperature.
Troubleshooting
G
ION indicator on the indoor unit is blinking.
®
Press ION button twice. If the indicator is still blinking, please consult
the dealer.
G
G
Indoor fan stops occasionally during Automatic Fan
Speed setting.
®
®
This is an advanced feature that helps to remove smell from the
surrounding area during operation.
Indoorfanstopsoccasionallyduringheatingoperation.
To avoids unintended cooling effect.
50
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HOW TO OPERATE
I Operation Details
Timer
TIMER
•
Use the ON timer to turn on the air
conditioner at the desired time. This
will give you a cooling or warming
environment, e.g. when you return
from work or wake up.
•
•
When the ON timer is set, operation
will start up to 35 minutes before the
actual set time.
Use the OFF timer to stop the air
conditioner operation at the desired
time. This can save electricity while
you are going out or sleeping.
1
•
•
The set timer will repeat daily once
it is set.
Select ON or
OFF timer.
If there is a power failure, you can
press SET button to restore the
previous setting once the power is
resumed.
2
desired time.
Set the
•
If the timer is cancelled, you can
restore the previous setting by
pressing SET button.
CHECK
•
When there is error, the unit stops
its operation and timer indicator
blinks.
3
1. Press for 5 seconds.
Confirm the
setting.
CANCEL
Cancel the
selected timer.
2. Browse for respective error code,
where “beep” sounds are heard.
3. Turn off the power supply and call
authorized distributor.
Note:
Press the ‘Reset’ button to quit
checking.
Unit might operate with limited function
depending on error found.
(Operation starts, 4 “beep” sounds are
heard)
G Ensure the clock on the remote control has been set
correctly.
G You could use the ON and OFF timers at the same time.
G To cancel either the ON or OFF timer, press
press
or
, then
.
Hint
G
G
Press CLOCK more than 10 seconds to change the time format from 24 hours to AM/PM format.
For your convenience, you could set the air conditioner to operate automatically by using both ON and OFF timer.
Troubleshooting
G
TIMER indicator always on.
®
®
Timer is activated and the setting will repeat itself daily.
G
POWER indicator is blinking 35 minutes before ON
timer is activated.
The unit is determining the operation mode by sensing the room
temperature. This happens when it has been set to AUTO operation
mode.
51
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CARE & CLEANING
I Washing Instructions
•
•
•
Do not use benzene, thinner or
scouring powder.
Switch off the power supply
Use soaps or neutral household
detergent ( pH7) only.
before cleaning
≃
Do not use water with temperature
higher than 40°C.
FRONT PANEL
Raise and pull to remove.
Wash and dry.
INDOOR UNIT
•
Wipe the unit gently with a soft, dry
cloth.
AIR FILTER
•
It is recommended to clean the air
filters once every 2 weeks.
AIR FILTER
Vacuum, wash and dry.
•
Purchase the replacement filter if it
is damaged.
Part no.: CWD001144
SUPER ALLERU-BUSTER
•
It is recommended to clean the filter
every 6 months.
•
Replace the filter every 3 years or
purchase the replacement filter if it
is damaged.
Remove
Part no.: CZ-SA13P
F U L
POWER
ION
ER QU IET
POW
ER TIM
IONIZER
Remove
•
It is recommended to clean the
ionizer every 6 months.
I Preparation for extended
Non-operation
•
Operate the unit for 2~3 hours using
ion operation to dry the internal parts.
INDOOR UNIT
Wipe gently.
SUPERSONIC AIR
•
•
Turn off the power supply.
Remove the remote control batteries.
PURIFYING DEVICE
Vacuum the super
alleru-buster filter.
I Pre-season Inspection
•
This inspection is recommended
before operating the air conditioner
at every season.
IONIZER
Clean with cotton
bud.
•
•
•
Check if the remote control batteries
needed to be replaced.
Remove
Ensure there is no obstruction at all
air intake and outlet vents.
After the start of operation for 15
minutes, it is normal if the
temperature differences between
air intake and outlet vents at indoor
unit is:-
Operation
Cooling
Temperature
8°C
Vacuum, wash and
dry the frame.
Heating
14°C
Hints
G
G
G
Clean the filter regularly as dirty filters will cause unpurified air, low cooling or heating capacity, unpleasant smells and higher
energy consumption.
The unit will become dirty and the performance of the unit will decrease after used for several seasons. Please consult an
authorized dealer to perform seasonal inspections in addition to regular cleaning.
This air conditioner is equipped with a built-in surge protective device. However, in order to further protect your air conditioner
from being damaged by abnormally strong lightning activity, you may switch off the power supply.
52
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CS-E15DKRW CU-E15DKR / CS-E18DKRW CU-E18DKR / CS-E21DKRS CU-E21DKR
9.2. CS-E18DKRW CS-E21DKRS
Thank you for purchasing Panasonic Air Conditioner
SAFETY PRECAUTIONS
I Definition
To prevent personal injury,
injury to others and property
damage, the following
instructions must be
followed.
Installation Precautions
Warning
Incorrect operation due to
failure to follow instructions
will cause harm or damage,
the seriousness of which is
classified as below:
Do not install, remove and reinstall the unit by yourself.
•
Improper installation will cause leakage, electric shock or fire. Please consult an authorized dealer or
specialist for the installation work.
Caution
Warning
•
•
•
This air conditioner must be earthed. Improper grounding will cause electric shock.
Ensure that the drainage piping is connected properly. Otherwise, water will leak.
This sign warns of death
or serious injury.
Current leakage protection equipment must be installed. Otherwise, electric shock or fire may
occur.
•
Do not install the unit in a potentially explosive atmosphere.
Caution
Operation Precautions
This sign warns of injury
or damage to property.
Warning
•
•
•
•
•
Do not share power outlet.
Do not modify power cord.
Do not use an extension cord.
Do not operate with wet hands.
•
•
Use specified supply cord.
The instructions to be
followed are classified by
the following symbols:
If the supply cord is damaged or needed
to be replaced, it must be replaced by
the manufacturer or its service agent or
a similarly qualified person in order to
avoid a hazard.
Do not insert finger or other objects into the
indoor or outdoor unit.
•
•
Remove the batteries if the unit is not
going to be use for a long period of time.
•
Do not attempt to repair the unit by
yourself.
New batteries of the same type must be
inserted following the polarity stated to
prevent malfunction of the remote control.
This symbol denotes
an action that is
PROHIBITED.
•
•
Do not use rechargeable (Ni-Cd) batteries.
Keep the remote control away from infants
and small children to prevent them from
accidentally swallowing the batteries.
•
In case of emergency or abnormal
condition (burnt, smell, etc) occurs, turn
off the power supply.
These symbols denote
actions that are
COMPULSORY.
Caution
•
•
•
•
•
Do not wash the unit with water, benzene,
thinner or scouring powder.
•
Ventilate the room regularly.
•
Pay attention as to whether the
installation rack is damaged after long
period of usage.
Do not use for other purposes such as
preservation of food.
Do not use any combustible equipment at
airflow direction.
•
•
Switch off the power supply before
cleaning or servicing.
Do not sit or place anything on the indoor
or outdoor unit.
Turn off the power supply if the unit is not
used for a long period of time.
Do not expose directly to cold air for a
long period.
Operation Condition (OC)
Use this air conditioner under the following temperature
range.
Safety Regulation
Indoor
Outdoor
DBT: Dry Bulb Temperature
WBT: Wet Bulb Temperature
The appliance is not intended for use by young children or infirm
person without supervision. Young children should be supervised to
ensure that they do not play with the appliance.
DBT WBT DBT WBT
Maximum Temperature (COOL)
Maximum Temperature (HEAT)
Minimum Temperature (COOL)
Minimum Temperature (HEAT)
32
30
16
16
23
–
43
24
-5
26
18
–
11
–
-5
-6
53
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CS-E15DKRW CU-E15DKR / CS-E18DKRW CU-E18DKR / CS-E21DKRS CU-E21DKR
Note:
The illustrations in this manual are for explanation purposes only and may differ from the
actual unit. It is subjected to change without notice for future improvement.
PRODUCT OVERVIEW
I About
Remote Control Preparation
Air intake
Indoor Unit
Supersonic air
purifying device
2. Insert
batteries
(AAA or
R03)
1. Pull out
Auto OFF/ON
button
Front panel
Air filter
Receiver
3. Press CLOCK button
4. Set
current
time
Airflow direction
louver
5. Press again to confirm
Discharged air
Ionizer
Do not touch
during operation
•
•
•
Timer operation will be based on
current time set.
Indicator
The batteries can be used for
approximately 1 year.
Outdoor Unit
POWER TIMER QUIET POWERFUL ION
SUPER
ALLERU-BUSTER
The batteries must be
recycled or disposed of
properly.
Air inlet (rear)
Remote Control Signal
Air inlet (side)
•
•
•
Make sure it is not obstructed.
Maximum distances: 10m.
Air outlet
Certain fluorescent lights may
interfere with signal transmission.
Consult your dealer.
Remote Control
Transmitter
Auto OFF/ON Button
•
To operate the unit if the
remote control is misplaced or
malfunctioning.
LCD display
Ion operation
Operation
Action
mode
Temperature setting
Automatic
Press once
Operation
Off/On
Quiet operation
Operation mode
Cooling
Operation
Press until “beep”
sound and release.
Powerful operation
Fan speed selection
Airflow direction
adjustment
Press until “beep”
sound and release.
Heating
Operation
Timer setting
Clock setting
Press again until
“beep-beep” sound
and release.
Memory reset
Check
•
To OFF, press again the Auto OFF/
ON button.
Troubleshooting
G
G
G
G
G
G
G
Operation delayed for few minutes after restart.
Sound like water flowing during operation.
Mist emerges from indoor unit.
®
®
®
®
®
®
®
This is a normal self protection control.
Caused by refrigerant flow inside.
Condensation effect due to cooling process.
Noisy during operations.
Installation work could be slanted or front panel didn’t close properly.
Check whether batteries are correctly inserted or need replacement.
Check either circuit breaker is tripped or timer is used correctly.
Condensation or evaporation happens at piping surface.
Remote control/display does not work.
The unit cannot operate.
Outdoor unit emits water/steam.
54
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CS-E15DKRW CU-E15DKR / CS-E18DKRW CU-E18DKR / CS-E21DKRS CU-E21DKR
HOW TO OPERATE
I Operation Details
Auto, Heat, Cool, Dry
AUTO - Automatic Operation
•
The unit will automatically select
the operation mode according
to the setting, outdoor and room
temperature. During operation mode
selection, power indicator blinks.
For every 30 minutes, the operation
mode is reselected.
1
operation.
HEAT - Heating Operation
•
Enables you to enjoy the warming
effect at your preferred setting
temperature.
Start the
•
•
For cold air prevention, air might
not blow out immediately and
power indicator blinks when
operation starts.
2
Also operates in defrost mode
(maximum 10 minutes) where by
the power indicator blinks. The
melted frost is drained at outdoor
unit and indoor fan is stopped.
Select the
desired
operation.
COOL - Cooling Operation
AUTO
•
Enables you to enjoy the cooling
effect at your preferred setting
temperature.
DRY
HEAT
COOL
DRY - Soft Dry Operation
•
Enables you to set the desired
temperature at low fan speed which
provides you with the dehumidifying
surroundings.
3
Set the
temperature.
(16°C~30°C)
G Supersonic air purifying device (super alleru-buster) operates
automatically while the air conditioner is switched on.
G Powerful, Quiet and Ion operations could be activated in all
operation modes.
G Press
button again to stop the operation.
Hint
G
To save electricity, close the curtains when using air conditioner to prevent sunlight and heat from coming in.
Troubleshooting
G
The room has a peculiar odour.
®
This may be a damp smell emitted by the wall, carpet, furniture or
clothing in the room.
G
Air conditioner does not cool or heat efficiently.
®
®
®
®
Ensure the temperature has been set correctly.
Ensure windows and doors have been closed properly.
Ensure filters are cleaned or replaced when necessary.
Ensure inlet and outlet vents of the units have not been obstructed.
55
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CS-E15DKRW CU-E15DKR / CS-E18DKRW CU-E18DKR / CS-E21DKRS CU-E21DKR
HOW TO OPERATE
I Operations Details
POWERFUL
Powerful, Quiet, Ion, Fan Speed,
Air Swing
•
To achieve setting temperature
quickly.
QUIET
To provide a quiet environment.
•
ION
•
To provide fresh air effect by
producing negative ions.
QUIET
Enables quiet
operation.
ION
Enables ion
operation.
•
Ion operation could be activated
independently.
•
Press
operation.
button to stop the
FAN SPEED
•
To provide you with the various fan
speed selections.
POWERFUL
Enables
•
•
There are 5 levels of fan speed in
addition to automatic fan speed.
powerful
operation.
Automatic fan speed:
The speed of the indoor fan is
automatically adjusted according to
the operation.
AIR SWING
•
To ventilate air in the room.
FAN SPEED
Select fan speed.
•
There are 5 selections in addition to
automatic vertical air flow direction.
•
If automatic vertical airflow direction
has been set, the louver swings up
and down automatically.
AIR SWING
Adjust the vertical
or horizontal airflow
direction louver.
•
•
To ventilate air in the room.
There are 5 selections in addition
to automatic horizontal air flow
direction.
•
If automatic horizontal airflow
direction has been set, the louver
swings left and right automatically.
G Powerful and Quiet operations could not be activated at the
same time.
•
Please do not adjust the vertical and
horizontal airflow direction louver
manually.
G Powerful, Quiet and Ion operations could be cancelled by
pressing the respective button again.
Hints
G
If you wish to have the cool air blowing directly on you, set the airflow direction downward but not for an excessive length of time,
as it may harm your health.
G
Approximately 10% of electricity can be saved if you set the temperature 1°C higher in cooling operation or 2°C lower in heating
operation than the desired temperature.
Troubleshooting
G
ION indicator on the indoor unit is blinking.
®
Press ION button twice. If the indicator is still blinking, please consult
the dealer.
G
G
Indoor fan stops occasionally during Automatic Fan
Speed setting.
®
®
This is an advanced feature that helps to remove smell from the
surrounding area during operation.
Indoorfanstopsoccasionallyduringheatingoperation.
To avoids unintended cooling effect.
56
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CS-E15DKRW CU-E15DKR / CS-E18DKRW CU-E18DKR / CS-E21DKRS CU-E21DKR
HOW TO OPERATE
I Operation Details
Timer
TIMER
•
Use the ON timer to turn on the air
conditioner at the desired time. This
will give you a cooling or warming
environment, e.g. when you return
from work or wake up.
•
•
When the ON timer is set, operation
will start up to 35 minutes before the
actual set time.
Use the OFF timer to stop the air
conditioner operation at the desired
time. This can save electricity while
you are going out or sleeping.
1
•
•
The set timer will repeat daily once
it is set.
Select ON or
OFF timer.
If there is a power failure, you can
press SET button to restore the
previous setting once the power is
resumed.
2
desired time.
Set the
•
If the timer is cancelled, you can
restore the previous setting by
pressing SET button.
CHECK
•
When there is error, the unit stops
its operation and timer indicator
blinks.
3
Confirm the
setting.
1. Press for 5 seconds.
CANCEL
Cancel the
selected timer.
2. Browse for respective error code,
where “beep” sounds are heard.
3. Turn off the power supply and call
authorized distributor.
Note:
Press the ‘Reset’ button to quit
checking.
Unit might operate with limited function
depending on error found.
(Operation starts, 4 “beep” sounds are
heard)
G Ensure the clock on the remote control has been set
correctly.
G You could use the ON and OFF timers at the same time.
G To cancel either the ON or OFF timer, press
press
or
, then
.
Hint
G
G
Press CLOCK more than 10 seconds to change the time format from 24 hours to AM/PM format.
For your convenience, you could set the air conditioner to operate automatically by using both ON and OFF timer.
Troubleshooting
G
TIMER indicator always on.
®
®
Timer is activated and the setting will repeat itself daily.
G
POWER indicator is blinking 35 minutes before ON
timer is activated.
The unit is determining the operation mode by sensing the room
temperature. This happens when it has been set to AUTO operation
mode.
57
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CS-E15DKRW CU-E15DKR / CS-E18DKRW CU-E18DKR / CS-E21DKRS CU-E21DKR
CARE & CLEANING
I Washing Instructions
•
•
•
Do not use benzene, thinner or
scouring powder.
Switch off the power supply
Use soaps or neutral household
detergent ( pH7) only.
before cleaning
≃
Do not use water with temperature
higher than 40°C.
FRONT PANEL
INDOOR UNIT
Raise and pull to remove.
Wash and dry.
•
Wipe the unit gently with a soft, dry
cloth.
AIR FILTER
AIR FILTER
Vacuum, wash and dry.
•
It is recommended to clean the air
filters once every 2 weeks.
•
Purchase the replacement filter if it
is damaged.
Part no.: CWD001137 (Left)
CWD001138 (Right)
SUPER ALLERU-BUSTER
Remove
•
It is recommended to clean the filter
every 6 months.
•
Replace the filter every 3 years or
purchase the replacement filter if it
is damaged.
Remove
Part no.: CZ-SA13P
IONIZER
•
It is recommended to clean the
ionizer every 6 months.
INDOOR
UNIT
Wipe gently.
I Preparation for extended
Non-operation
•
Operate the unit for 2~3 hours using
ion operation to dry the internal parts.
SUPERSONIC AIR
•
•
Turn off the power supply.
PURIFYING DEVICE
Remove the remote control batteries.
IONIZER
Clean with cotton
bud.
Vacuum the super
alleru-buster filter.
I Pre-season Inspection
•
This inspection is recommended
before operating the air conditioner
at every season.
Remove
•
•
•
Check if the remote control batteries
needed to be replaced.
Ensure there is no obstruction at all
air intake and outlet vents.
After the start of operation for 15
minutes, it is normal if the
temperature differences between
air intake and outlet vents at indoor
unit is:-
Vacuum, wash and
dry the frame.
Operation
Cooling
Temperature
8°C
Heating
14°C
Hints
G
G
G
Clean the filter regularly as dirty filters will cause unpurified air, low cooling or heating capacity, unpleasant smells and higher
energy consumption.
The unit will become dirty and the performance of the unit will decrease after used for several seasons. Please consult an
authorized dealer to perform seasonal inspections in addition to regular cleaning.
This air conditioner is equipped with a built-in surge protective device. However, in order to further protect your air conditioner
from being damaged by abnormally strong lightning activity, you may switch off the power supply.
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