Toshiba RAS-18LAH-A User manual

Thank you very much for purchasing TOSHIBA
Air Conditioner. Please read this owner’s
manual carefully before using your
Air Conditioner.
Indoor Unit Outdoor Unit
RAS-18LKH-A RAS-18LAH-A
RAS-22LKH-A RAS-22LAH-A
For general public use
(SPLIT TYPE)
OWNER’S MANUAL
AIR CONDITIONER
SLEEP
ON/OFF
A
A
TEMP.

OWNER
,S MANUAL

PRECAUTIONS
BEFORE OPERATION
UNIT DESCRIPTION
REMOTE CONTROL DESCRIPTION
REMOTE CONTROL PREPARATION
UNIT OPERATION
AUTOMATIC OPERATION
MANUAL OPERATION
TIMER OPERATION
DISCHARGE AIR LOUVER CONTROL
EMERGENCY AND TEST OPERATION
AIR CLEANING OPERATION
CARE AND MAINTENANCE
POINTS TO NOTE
CLEANING THE FILTERS AND FRONT PANEL
CLEANING THE MAIN UNIT
AFTER-SEASON CARE
TROUBLESHOOTING
CONTENTS
2
6
6
8
11
13
13
14
15
20
21
22
23
23
25
26
26
27

PRECAUTIONS
Installing and servicing air conditioning equipment can be hazardous due to system pressure and electrical
components.
Only trained and qualified service personnel should install or service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning the coil and filters, and replacing
filters.
All other operations should be performed by trained service personnel.
When working on air conditioning equipment, observe precautions in the literature, tags and labels attached to the
unit.
Use the correct voltage.
Using voltage other than specified will damage
the unit.
Check the power plug.
If the power plug is not inserted tightly, or if there is
any damage to the power cord, it could result in
leakage or electric shock.
Do not use the power cord as a means of turning
off the unit.
Before performing service or maintenance operations on the system, turn off the main power of the unit. Electric
shock can cause personal injury.
WARNING
WARNING
WARNING
WARNING
OWNER
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S MANUAL - 2

PRECAUTIONS
Do not use flammable sprays near the unit.
The unit can be damaged by gasoline, benzene, thinners,
insecticides and other chemical agents.
When unplugging the power plug, do not pull by the
power cord.
The power cord will get damaged and it can cause
electric shock.
To avoid the risk of serious electric shock, never
splash the indoor and the outdoor unit with water.
Do not put hands or objects into the discharge grille
of outdoor unit.
This unit has a fan running at high speed. It is very dangerous
to touch the fan.
Use only fuses of the proper amperage.
WARNING
WARNING
WARNING
WARNING
WARNING
OWNER
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S MANUAL - 3

PRECAUTIONS
Be careful to keep the room temperature a comfortable level.
Avoid continuous direct air flow to the occupant,
especially in case of sleeping persons or hospital patients.
Do not obstruct the front of the discharge grille of both units.
This will block air flow, reduce the cooling effect
and may result in unit malfunction.
Ventilate the room when it becomes stuffy or
filled with undesirable odors.
Keep heat sources away from the unit; high
temperature can cause damage.
Set a comfortable temperature.
Very low or very high temperature setting consider-
ably increase power consumption.
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WARNING
WARNING
WARNING
WARNING
WARNING
27°C
OWNER
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S MANUAL - 4

PRECAUTIONS
To circulate the room air only, operate at the FAN mode.
In summer, if possible, prevent direct sunlight from
entering the room; draw curtains or blinds.
Use the timer correctly to maintain comfort conditions.
Please read this owner
,
s manual carefully before
operating the unit.
It contains further important instructions for proper operation.
WARNING
WARNING
WARNING
WARNING
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OWNER
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S MANUAL - 5

BEFORE OPERATION
ROOM AIR INLET
AIR FILTER
ACTIVE CARBON FILTER &
OPTION 2 : PHOTO-CATALYST FILTER
REMOTE CONTROL SIGNAL RECEIVER
AIR SWING FLAP
VERTICAL LOUVER
ROOM AIR OUTLET
POWER PLUG
LCD REMOTE CONTROL
OUTDOOR AIR OUTLET
OUTDOOR AIR INLET
INDOOR AND OUTDOOR
CONNECTION
DRAIN HOSE
UNIT DESCRIPTION
Indoor Unit
Outdoor Unit
OWNER
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S MANUAL - 6
OPTION 1 : ELECTROSTATIC FILTER

BEFORE OPERATION
Switch Panel
• UNIT ON(Green): When the unit is switched on by the remote control,
a green light will be displayed.
• TIMER(Orange) : When the unit is in reservation mode,
an orange light will be displayed.
• EMERGENCY button :
Can be used when the remote control is lost or inoperative.
• TEST button :
Is only used by service men to test the unit operation.
• For the usage of EMERGENCY and TEST buttons, refer to
EMERGENCY AND TEST OPERATION, p.21.
Indoor Unit Display
EMERGENCY
TEST
OWNER
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S MANUAL - 7

BEFORE OPERATION
REMOTE CONTROL DESCRIPTION
Names and Functions of the Buttons
OWNER
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S MANUAL - 8
SLEEP
MODE FAN FLAP
CLOCK
EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF CANCEL
A
SWING
A
TEMP.
ON/OFF
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ON/OFF BUTTON
If you press this button, the unit will begin operation. Press the
button again, and operation stops. ( You can hear a receiving
beep. ) If you press this button immediately after turning off
the unit, the compressor will not operate for 3 minutes to
prevent overloading.
TEMPERATURE SETTING BUTTONS
If you set the desired room temperature, then the unit will
maintain the room temperature as set . In COOL mode, if the
room temperature is higher than the setting, the compressor
will automatically turn on to provide a cooling effect. On the
other hand, if the room temperature is lower than the setting,
the compressor will automatically turn off to stop cooling
operation. In HEAT mode, if the room temperature is lower
than the setting, the compressor will automatically turn on to
provide a heating effect. If the room temperature is higher
than the setting, the compressor will automatically turn off to
stop heating operation. However,the indoor fan will continue
to circulate air even if the compressor is turned off.
SLEEPTIMER BUTTON
Press this button to set the SLEEP timer. (Refer to p.19)
OPERATION MODE SELECTING BUTTON
Press this button to select the desired mode.
In AUTO mode, the unit will run automatically by selecting
COOL or HEAT mode according to the indoor room temperature.
In DRY mode, the microcomputer of the unit controls the indoor
fan motor and makes the outdoor unit automatically turn on
and off according to the room temperature, which causes
moisture to be removed more effectively.
In COOL mode, the unit will run at the normal cooling mode.
In FAN mode, only the indoor fan will operate at the selected
fan speed and circulate room air. In HEAT mode, the unit will
run at the normal heating mode.
1
2
3
4
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BEFORE OPERATION
FLAP CONTROL BUTTON
Controls the discharge air flow direction up and down.
( Refer to p.20 ) On start up, the flaps open automatically
according to the operating mode.
If you press this button, the flap will move stepwise and
the position will be displayed. If you press this button
again, the unit operates at “SWING” mode. At operating
mode “SWING”, the flap will swing up and down
continuously.
ON/OFFTIMERAND CURRENTTIME
BUTTONS
If you set the ON and OFF times, the unit will automatically
turn on and off at the set times.
( Refer to pp.15 -16 )
If you press the CLOCK button during Timer operation,
you will see the current time for 5 seconds.
HOUR/MINUTE SETTING BUTTONS
Adjust the current time (Refer Page 11) and the on/off
times of timer operation with these buttons.
RESERVATION AND CANCEL BUTTONS
Press the RESERV. button to reserve the ON/OFF Timer and
press the CANCEL button to cancel the reserved on/off
time. ( Refer to pp.15 -18 )
EVERYDAYTIMER BUTTON
Press the EVERYDAY button and the on/off time you have
reserved will be repeated until cancelled. ( Refer to pp.15 -18 )
CURRENTTIMEADJUSTING BUTTON
Press this button to adjust the current time. ( Refer to p.11 )
RESET BUTTON
Press this button when the remote control is not operating
properly or after replacing batteries.
( Refer to p. 11 )
ADDRESS SWITCH
If you have two indoor units in the same room, you can
link one remote control with one indoor unit, and link the
other remote control with the other indoor unit.
( Refer to p.11 )
6
7
8
9
10
11
12
13
LR03(AM4)1.5V
LR03(AM4)1.5V
RST TA
OWNER
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S MANUAL - 9
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FAN SPEED SELECTING
BUTTON
5
Press the button to select the desired fan
speed of AUTO, LOW, MED or HIGH, and the
indoor fan will operate at the selected fan
speed.
If you select “AUTO”, the fan speed will be
controlled by the microcomputer of the unit.

BEFORE OPERATION
Indicates the selected operating mode.
Lights up when the signal from the remote
control is transmitted.
A receiving beep is heard from the unit.
Lights up when the batteries must be
replaced with new ones. When this mark
appears, replace the batteries within a
week.
Lights up when the unit is operating.
Indicates the selected temperature.
Indicates flap modes
Indicates the reserved status of SLEEP timer or
EVERYDAY timer.
Indicates the reservation time of ON timer and
OFF timer or the current time.
Indicates the selected fan speed.
1
2
3
4
5
6
7
8
9
Remote Control Display
COOL DRY FAN
A
HEAT
AUTOMATIC CHANGEOVER
OWNER
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S MANUAL - 10
A
SWING
A
햲
햳
햴
햷
햸
햺
햵햶
햹
Automatic position
User selected position
Swing up and down
AUTO
SWING
AUTO LOW MED HIGH
A

BEFORE OPERATION
Remove the cover of the
battery compartment at the
back of the remote control by
sliding it out in the direction of
the arrow.
REMOTE CONTROL PREPARATION
Remove the used batteries and
insert new batteries. The remote
control uses two alkaline batteries.
(1.5V, LR03x2)
Press the RST button with a sharp
object to reset the remote control .
1 2 3
•Do not fit use the used batteries or batteries of a different type. Such use may cause the unit to malfunction.
•Changing batteries should be done after turning off the unit.
•The average battery life during normal use is approximately one year.
•When the air conditioner does not operate normally after replacing the batteries, remove the batteries, refit
them and repress the RST button after 5 seconds.
•TA/RST button may locate back side near battery compartment for some models.
NOTE
Replacing Batteries
Setting Current Time
NOTE
•This function must only be performed by qualified service personnel.
When two units are used in the same room, you can match the address of the remote control to that of the unit.
Remove the lid of the battery case. Assign the address switch of one remote control as B.
Press the RST button with a sharp object.
Turn off the unit and pull out the power plug. Remove the front panel, Terminal block cover, and Frame grille.
Pull out the PCB. Assign the address switch of one indoor unit as B.
1
2
3
Matching Address between Indoor Unit and Remote Control
Press the TA button with a sharp
object and the current time
indication symbol flashes. In the
beginning, 6:00A.M. will flash.
Set the current time with the hour
and the minute buttons while the
current time indication flashes.
Press the TA button again.
The flashing will stop and the
current time will be set.
4 5 6
ON/OFF SLEEP
MODE FAN FLAP
CLOCK EVERYDAY HOUR MINUTE
RESERV
.
RST TA
TIMER
ON OFF
CANCEL
TEMP .
ON/OFF
TEMP
.
SLEEP
MODE FAN FLAP
CLOCK EVERYDAY
RESERV
.
RST TA
TIMER
ON OFF
CANCEL
HOUR MINUTE
ON/OFF
TEMP.
SLEEP
MODE FAN FLAP
CLOCK EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF CANCEL
RST TA
LR03(AM4)1.5V
LR03(AM4)1.5V
RST TA
LR03(AM4)1.5V
LR03(AM4)1.5V
ON/OFF
TEMP.
SLEEP
MODE FAN FLAP
CLOCK EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF CANCEL
OWNER
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S MANUAL -11

BEFORE OPERATION
The remote control will only function when operated within 5 meters of the unit.
•You can hear a beeping sound from the unit in the following
cases, which indicates that the signal is received.
5m maximum
•The air conditioner will not operate if curtains,
doors or other materials block the signals from the
remote control to the unit.
•Avoid spilling liquid onto the remote control
or dropping it. This can cause deformation,
discoloration and malfunction.
•If the infrared signal receiver on the unit is exposed
to direct sunlight, the air conditioner may not work
properly.
Draw the curtains to avoid direct sunlight.
•A mounting bracket for the remote control is
supplied with the unit.
Install the mounting bracket on the wall 30cm
below the receiver of the unit.
Signal Receiving
CAUTION
OWNER
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S MANUAL - 12

UNIT OPERATION
PROCEDURE
ON/OFF button
Press this button and the unit starts AUTO operation.
MODE button
If the unit is operating in another mode, press the MODE
button to select AUTO.
TEMP. ( ) buttons
Set the desired temperature using the remote control
buttons.
At the start of the AUTO operation, the temperature
is set at 25°c and it is functional within the total
temperature range.
FLAP button
Press this button to control the desired air flow direction.
FAN SPEED button
Set the desired fan speed at start up, on AUTO.
ON/OFF button
Press this button again to stop operation.
Automatic operation means that the air conditioner operates automatically by selecting the COOL or HEAT mode and
automatically changes the fan speed according to the indoor condition to keep the room temperature
comfortable.
AUTOMATIC OPERATION
1
2
3
4
5
6
SLEEP
MODE FAN FLAP
CLOCK
EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF
CANCEL
A
A
TEMP.
ON/OFF
OWNER
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S MANUAL - 13
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NOTE
•When the room temperature is between 21°c ~ 29°c.
- If the room temperature is lower 1°c or more than the set temperature : HEAT mode will operate
- If the room temperature is higher1°c or more than the set temperature : COOL mode will operate
•When the room temperature is lower than 21°c or higher than 29°c, the operation mode is restricted regardless of
the set temperature.
- If the room temperature is lower than 21°c then only the heating mode is allowed.
- If the room temperature is higher than 29°c then only the cooling mode is allowed.
•The Auto operation is not suitable for the application to the computer room or some food/wine stock storage.

UNIT OPERATION
MANUAL OPERATION
PROCEDURE
DRY OPERATION
This operation eliminates moisture economically by operating the compressor, indoor and
outdoor fan motor intermittently, so that the room temperature is maintained at the set temperature.
1
2
3
4
5
6
ON/OFF button
Press this button and the AUTO operation is indicated.
•A receiving beep is heard.
•The green UNIT on lamp of the indoor unit display illuminates.
MODE button
Press this button to select the desired operation mode.
AUTO DRY COOL FAN HEAT
FAN SPEED button
Press this button to select the desired fan speed.
AUTO LOW MED HIGH
TEMP.( ) button
Press these buttons to set the desired temperature.
FLAP button
Press this button to control the desired air flow
direction.
ON/OFF button
Press this button and AUTO operation is indicated.
•A receiving beep is heard.
•The UNIT ON lamp is extinguished.
SLEEP
MODE FAN FLAP
CLOCK
EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF
CANCEL
A
A
TEMP.
ON/OFF
OWNER
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S MANUAL - 14
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UNIT OPERATION
TIMER OPERATION
ON Timer
PROCEDURE
ON TIMER button
Press this button.
On start up, time is set at 6:00 A.M..
HOUR, MINUTE buttons
Press these buttons to set the start-up time
desired while the ON Timer symbol is flashing.
RESERV. button
Press this button when pointing the remote control towards
the receiver of the indoor unit.
•A receiving beep is heard.
•TIMER lamp of the indoor unit illuminates.
MODE, FAN, FLAP, and TEMP. buttons
Set the desired operation mode with these buttons.
About ON Timer
•When the ON Timer is set, the unit monitors the room
temperature for 1hour before the set time to make sure
the room condition is reached by the reserve time.
•The actual on time of the unit is earlier that the reserved
time by 0 to 40 minutes according to the difference
between room temp. and set temp.
1
2
3
4
NOTE
•The current time is not indicated during the reservation of ON/OFF Time.
•When you want to know the current time, press the CLOCK button and you will see the current time for 5 seconds.
•If you reserve the ON Timer during operation, the unit will operate continuously
SLEEP
MODE FAN FLAP
CLOCK
EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF
CANCEL
A
A
TEMP.
ON/OFF
OWNER
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S MANUAL - 15
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UNIT OPERATION
OFF Timer
OFF TIMER button
Press this button.
In the beginning, the time is set at 2:00 A.M. .
HOUR, MINUTE buttons
Press these buttons to set the stop time desired while
the OFF Timer symbol is flashing.
RESERV. button
Press this button by pointing the remote control
towards the receiver of the indoor unit.
•A receiving beep is heard.
•TIMER lamp of the indoor unit illuminates.
1
2
3
PROCEDURE
SLEEP
MODE FAN FLAP
CLOCK
EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF
CANCEL
A
A
TEMP.
ON/OFF
OWNER
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S MANUAL - 16
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UNIT OPERATION
PROCEDURE
Combination of ON, OFF and EVERYDAY Timer
1
2
3
1
2
1
2
3
For example when you want the operation to start at 5:30
P.M. and stop at 10:30 P.M..
Reserve the ON Timer at 5:30 P.M..
Reserve the OFF Timer at 10:30 P.M..
Set the operation mode as desired.
Or when you want to stop the operation at 10:30 P.M. and start
again at 7:30A.M. with the same condition.
Reserve the OFF Timer at 10:30 P.M. during operation.
Reserve the ON Timer at 7:30 A.M..
When you want to start operation at 5:30 P.M. and stop at 10:30 P.
M. everyday with the same operating condition.
Reserve the ON Timer at 5:30 P.M..
Reserve the OFF Timer at 10:30 P.M..
Press the EVERYDAY button and RESERV. button.
NOTE
•Refer to pp.15 -16 for the setting method and refer to p.18 for the canceling method of the ON, OFF and
EVERYDAY Timers.
•In the ON and OFF Timer operation, the earlier setting compared to the current time will be applied first.
•The EVERYDAY Timer can be selected in case of a combination of the ON and OFF Timer reservation or
ON and SLEEP Timer reservation.
•You can change the ON/OFF reservation time where the EVERYDAY Timer reservation.
OWNER
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S MANUAL - 17
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UNIT OPERATION
Cancellation of ON, OFF and EVERYDAY Timer
Press the ON TIMER button to cancel the ON Timer
or press OFF TIMER button to cancel the OFF Timer.
To cancel the EVERYDAY Timer reservation, press the
EVERYDAY, ON TIMER or OFF TIMER button.
Press the CANCEL button by pointing the remote
control towards the receiver of the indoor unit.
•A receiving beep is heard.
•TIMER lamp of the indoor unit lights off.
1
2
NOTE
•If you cancel the ON Timer or OFF Timer reservation while EVERYDAY Timer is reserved, EVERYDAY Timer will be
automatically canceled.
•When the electricity fails while EVERYDAY Timer is reserved, EVERYDAY Timer reservation will be canceled.
Reserve the EVERYDAY Timer again after the electricity comes on.
•The current time will not be indicated and the TIMER lamp of the indoor unit will be on if either the ON Timer or
the OFF Timer is reserved.
PROCEDURE
SLEEP
MODE FAN FLAP
CLOCK
EVERYDAY HOUR MINUTE
RESERV.
RST TA
TIMER
ON OFF
CANCEL
A
A
TEMP.
ON/OFF
OWNER
,
S MANUAL - 18
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