OPERATING MANUAL
ROOM AIR CONDITIONER
MULTI SPLIT TYPE
(3 ROOMS)
Indoor Unit
ASU18T
Outdoor Unit
AOU36T
KEEP THIS OPERATION MANUAL
FOR FUTURE REFERENCE.
FUJITSU GENERAL LIMITED
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FEATURES AND FUNCTIONS
AUTOMATIC OPERATION
REMOVABLE INTAKE GRILLE
● COOLING MODEL
The indoor unit’s INTAKE GRILLE can be removed for easy
cleaning and maintenance.
Merely press the START/STOP button, and the unit will
begin automatic operation in the Cooling or Dry mode as
appropriate, in accordance with the thermostat setting
and the actual temperature of the room.
MILDEW-RESISTANT FILTER
● HEAT & COOL MODEL (REVERSE CYCLE)
Merely press the START/STOP button, and the unit will
begin automatic operation in either the Heating, Cooling
or Monitor modes as appropriate, in accordance with the
thermostat setting and the actual temperature of the
room.
The AIR FILTER has been treated to resist mildew growth,
thus allowing cleaner use and easier care.
AIR CLEANING FILTER (Optional)
The optional air cleaning filter uses an electrostatic princi-
ple to clean the air of fine particulate matter such as tobacco
smoke and plant pollen.
SLEEP TIMER
● COOLING MODEL
When the SLEEP timer button is pressed during Cooling
or Dry mode, the thermostat setting is gradually raised
during the period of operation. When the set time is
reached, the unit automatically turns off.
● HEAT & COOL MODEL (REVERSE CYCLE)
When the SLEEP timer button is pressed during Heating
mode, the air conditioner’s thermostat setting is gradu-
ally lowered during the period of operation; during Cool-
ing or Dry mode, the thermostat setting is gradually raised
during the period of operation. When the set time is
reached, the unit automatically turns off.
WIRELESS REMOTE CONTROL UNIT
The WIRELESS REMOTE CONTROL UNIT allows convenient
control of air conditioner operation.
OMNI-DIRECTIONAL AIR FLOW
(SWING OPERATION)
Three-dimensional control over air direction swing is possi-
ble through dual use of both an UP/DOWN air direction swing
and RIGHT/LEFT air direction swing. Since UP/DOWN air
direction flaps operate automatically according to the oper-
ating mode of the unit, it is possible to set air direction based
on the operating mode.
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Fig. 1
Fig. 2
Fig. 3
Fig
Fig. 4
Fig. 6
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NAME OF PARTS
Fig. 1 Indoor Unit
Fig. 6 Remote Control Unit
1 Operating Control Panel (Fig. 2)
2 MANUAL AUTO button
J SLEEP button
K MASTER CONTROL button
L SET TEMP./SET TIME button (
M Signal Transmitter
)
3 Remote Control Signal Receiver
4 Indicator Lamps (Fig. 3)
5 OPERATION Indicator Lamp (red)
6 TIMER Indicator Lamp (green)
● If the TIMER indicator lamp flashes when
the timer is operating, it indicates that a
fault has occurred with the timer setting
(see page 17 Auto Restart).
N TIMER button
O FAN CONTROL button
P START/STOP button
Q AIR FLOW DIRECTION button
R SWING LOUVER button
Rear side (Fig. 7)
S TIME ADJUST button
T ACL button
(located inside battery compartment)
U TEST RUN button
7 SWING Indicator Lamp (orange)
8 Intake Grille (Fig. 4)
9 Air Filter
0 Air Flow Direction Louver
A Right-Left Louvers
(behind Air Flow Direction Louver)
B Drain Hose
● This button is used when installing the
unit, and should not be used under nor-
mal conditions, as it will cause the air con-
ditioner’s thermostat function to operate
incorrectly.
C Inter Unit-Line
D Air Cleaning Filter (optional)
● If this button is pressed during normal op-
eration, the unit will switch to test opera-
tion mode, and the Indoor Unit’s OPERA-
TION Indicator Lamp and TIMER Indicator
Lamp will begin to flash simultaneously.
Fig. 5 Outdoor Unit
● To stop the test operation mode, press the
START/STOP button to stop the air condi-
tioner.
E Power Supply
F Intake Port
G Outlet Port
H Pipe Unit
I Drain port (bottom)
V Remote Control Unit Display (Fig. 8)
W Transmit Indicator
X Clock Display
Y Operating Mode Display
Z Timer Mode Display
[ Fan Speed Display
\ Temperature Set Display
] Timer Set Indicator
` Temperature Set Indicator
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NAME OF PARTS
Instructions relating to heating(*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Fig. 1
Fig. 2
Fig. 3
Fig. 5
Fig. 4
Fig. 6
J
SLEEP
TIMER
U
V
G
K
CLOCK
AUTO
COOL
MASTER
SET SET
FAN
CLOCK
AM
TIMER SLEEP
ON
CONTROL TEMP. TIME CONTROL
W
Y
Z
L
M
H
I
PM
H
M
OFF
OFF
ON TIMER RESET
ENERGY SAVE
A
START
STOP
AUTO
AUTO
COOL
DRY
FAN
HEAT
HIGH
MED
LOW
N
*
[
\
]
X
SET
SWING
O
SET
SWING
R
S
T
Fig. 8
TIME TEST
ENERGY
SAVE
ADJUST RUN ACL
P
Q
Fig. 7
En-5
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Fig. 1 Indoor Unit
Fig. 6 Remote Control Unit
1 Operating Control Panel (Fig. 2)
2 MANUAL AUTO button
G SLEEP Button
H MASTER CONTROL Button
I SET TEMP./SET TIME Buttons (
J Signal Transmitter
)
3 Remote Control Signal Receiver
4 Indicator Lights (Fig. 3)
K TIMER Button
5 OPERATION Indicator Light (red)
6 TIMER Indicator Light (green)
7 SWING Indicator Light (orange)
(VERTICAL SWING)
8 SWING Indicator Light (orange)
(HORIZONTAL SWING)
L FAN CONTROL Button
M START/STOP Button
N Battery compartment lid
Inside of the battery compartment lid (Fig. 7)
O AIR FLOW DIRECTION Button
P ENERGY SAVE Button
Q CODE CHANGE (Slide Switch)
Switching the remote control unit code.
(Max. 4 units)
● If the TIMER indicator light flashes when
the timer is operating, it indicates that a
fault has occurred with the timer setting
(See page 15 Auto Restart).
R TIME ADJUST Button
S TEST RUN Button
9 Intake Grille (Fig. 4)
0 Air Filter
A UP/DOWN Air Direction Flaps
B RIGHT/LEFT Air Direction Louvers
(behind UP/DOWN Air Direction Flaps)
C Drain Hose
●
●
●
This button is used when installing the air
conditioner and should not be used under
normal conditions as it will cause the air
conditioner’s thermostat function to oper-
ate incorrectly.
If this button is pressed during normal op-
eration, the unit will switch to test opera-
tion mode, and the indoor unit’s OPERA-
TION indicator light and TIMER indicator
light will begin to flash simultaneously.
To stop the test operation mode, either
press the TEST RUN button once again, or
press the START/STOP button to stop the
air conditioner.
D Air Cleaning Filter (optional)
Fig. 5 Outdoor Unit
E Intake Side
F Outlet Side
T ACL Button
U Remote Control Unit Display (Fig. 8)
V Transmit Indicator
W Clock Display
X Operating Mode Display
Y Timer Mode Display
Z Fan Speed Display
[ Temperature Set Display
\ Timer Set Indicator
] Temperature Set Indicator
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PREPARATION
CAUTION!
Turn on the Power
● Take care to prevent infants from acciden-
tally swallowing batteries.
In the case of a direct line connection, turn on the circuit
breaker.
● When not using the remote control unit
for an extended period, remove the bat-
teries to avoid possible leakage and dam-
age to the unit.
● If leaking battery fluid comes in contact
with your skin, eyes, or mouth, immedi-
ately wash with copious amounts of wa-
ter, and consult your physician.
Load Batteries (AAA × 2)
Press and slide the battery compartment lid on the re-
● Dead batteries should be removed quickly
and disposed of properly, either by plac-
ing in a public battery collection recepta-
cle, or by returning to appropriate author-
ity.
1
verse side to open it.
Slide in the direction of the arrow while pressing the
mark.
● Do not attempt to recharge dry batteries.
Insert batteries.
2
3
Never mix new and used batteries, or
batteries of different types.
Be sure to align the battery polarities (
) correctly.
Batteries should last about one year
under normal use. If the remote control
unit’s operating range becomes appre-
ciably reduced, replace the batteries and
press the ACL button (Fig. 7 T) with
the tip of a ballpoint pen or other small
object.
Close the battery compartment lid.
Set the Current time
Press the TIME ADJUST button (Fig. 7 S).
Use the tip of a ball-point pen or other small object to press the button.
1
2
Use the
SET TEMP./SET TIME buttons (Fig. 6 L)
to adjust the clock to the current time.
button: Press to advance the time.
button: Press to reverse the time.
(Each time the buttons are pressed, the time will be advanced/reversed in
one-minute increments; hold the buttons depressed to change the time
quickly in ten-minute steps.)
Press the TIME ADJUST button again.
This completes the time setting and starts the clock.
3
To Use the Remote Control Unit
● The remote control unit must be pointed at signal receiver (Fig. 1 3) to operate
correctly.
● Operating range: About 7 meters.
● When a signal is properly received by the air conditioner, a beep be heard.
● If no beep is heard, press the remote control unit button again.
Remote Control Unit Holder
Insert
Slide up
Press in
Pull out
Screws
1
Mount the Holder.
2
Set the Remote Control
Unit.
3
To remove the Remote
Control Unit .
En-7
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PREPARATION
CAUTION!
Load Batteries (R03/LR03/AAA × 4)
● Take care to prevent infants from
accidentally swallowing batteries.
● When not using the remote control unit
for an extended period, remove the
batteries to avoid possible leakage and
damage to the unit.
Open the battery compartment lid.
1
1 Slide the battery compartment lid until it stops.
2 While strongly gripping the portion on each side of the battery com-
partment lid that has a rough surface, slide the lid until it comes com-
● If leaking battery fluid comes in contact
with your skin, eyes, or mouth, immedi-
ately wash with copious amounts of
water, and consult your physician.
● Dead batteries should be removed
immediately and disposed of properly,
either in a battery collection receptacle
or to the appropriate authority.
pletely off.
2
1
2
Insert batteries.
Be sure to align the battery polarities (
2
2
) correctly.
● Do not attempt to recharge dry batteries.
Never mix new and used batteries, or
batteries of different types.
Close the battery compartment lid.
3
Batteries should last about one year
under normal use. If the remote control
unit’s operating range becomes appre-
ciably reduced, replace the batteries and
press the ACL button with the tip of a
ballpoint pen or other small object.
Set the Current time
Press the TIME ADJUST button.
Use the tip of a ball-point pen or other small object to press the button.
1
Use the (
)SET TIME buttons to adjust the clock to
2
3
the current time.
SET
SWING
SET
SWING
button: Press to advance the time.
TIME EST
button: Press to reverse the time.
ENERGY
SAVE
ADJUST RUN ACL
(Each time the buttons are pressed, the time will be advanced/reversed in
one-minute increments; hold the buttons depressed to change the time
quickly in ten-minute increments.)
Press the TIME ADJUST button again.
This completes the time setting and starts the clock.
To Use the Remote Control Unit
● The remote control unit must be pointed at signal receiver to operate correctly.
● Maximum operating range: Approximately 10 meters. (This may not apply when
the battery is low or there are obstacles.)
● When a signal is properly received by the air conditioner, a beep will be heard.
● If no beep is heard, press the remote control unit button again.
Remote Control Unit Holder
For Hand-Held use
For Wall Mount use
Insert
Insert
Slide up
Slide
Screws
Screws
Screw
1
Mount the Holder.
2
Set the Remote
Control Unit.
3 Attach the unit to
1
Mount the Holder.
2
Set the Remote
Control Unit.
3
To remove the
Remote Control
Unit.
the holder as
shown.
En-8
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OPERATION
To Select Mode Operation
Press the START/STOP button (Fig.6 P).
1
2
The indoor unit’s OPERATION indicator lamp (red) (Fig. 3 5) will light.
The air conditioner will start operation.
Press the MASTER CONTROL button (Fig.6 K) to se-
lect the desired mode.
Each time the button is pressed, the mode will change in the following
order:
s
s
AUTO
s
s
COOL
DRY
FAN
About three seconds later, the entire display will reappear.
Example: When set to COOL
To Set the Thermostat
Press the SET TEMP. buttons (Fig. 6 L).
button: Press to raise the thermostat setting.
button: Press to lower the thermostat setting.
● Thermostat setting range:
Cooling/Drying........................ 64 to 88 °F
Fan ........................................... 62 to 88 °F
About three seconds later, the entire display will reappear.
NOTE:
● During Fan mode, set the unit to “– – “ for continuous fan operation regard-
less of room temperature.
The thermostat setting should be considered a standard value, and may differ
somewhat from the actual room temperature.
Example: When set to 80 °F
To Set the Fan Speed
Press the FAN CONTROL button (Fig. 6 O).
Each time the button is pressed, the fan speed changes in the following order:
s
HIGH
s
MED
s
LOW
s
AUTO
s
QUIET
About three seconds later, the entire display will reappear.
When set to AUTO:
Cooling : As the room temperature approaches that of the thermostat setting,
the fan speed becomes slower.
Fan
:
The fan will operate at the optimum speed in accordance with the
room temperature in the vicinity of the indoor unit.
When set to QUIET:
SUPER QUIET operation begins. The indoor unit’s airflow will be reduced for
quieter operation.
● SUPER QUIET operation cannot be used during Dry mode. (The same is true
when dry mode is selected during AUTO mode operation.)
Example: When set to AUTO
● During SUPER QUIET operation, Cooling performance will be reduced some-
In order to increase the drying effect
during quiet cooling operation, the fan of
the indoor unit may stop.
what.
En-9
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To Select Automatic Operation
Press the MASTER CONTROL button to select AUTO.
The operating mode “AUTO” will appear alone in the display. The transmit indi-
cator will flash to indicate the command has been sent, and about three sec-
onds later the entire display panel will reappear.
To Set the Thermostat
Press the TEMPERATURE set button.
LOW HIGH
LOW HIGH
LOW HIGH
LOW HIGH
LOW HIGH
When set to
4 °F lower
When set to
2 °F lower
When set to
“normal”
When set to
2 °F higher
When set to
4 °F higher
About three seconds later, the entire display will reappear.
NOTE: The thermostat setting should be considered a standard value, and may
differ somewhat from the actual room temperature.
To Stop Operation
Press the START/STOP button.
The OPERATION indicator lamp (red) (Fig. 3 5) will go out.
Example: When set to “normal”
About Mode Operation
AUTO:
● Depending on the room temperature at the time operation begins, the operating
mode will be switched automatically as shown in the accompanying table.
Also, depending on the operating mode, the room temperature setting will cause
the “standard” temperature to be set as shown.
Actual Room
Operating Mode
Thermostat Setting
Temperature
(standard setting)
88 °F or above →
Cooling
Cooling
Dry
Dry
Dry
→
→
→
→
→
82 °F
80 °F
76 °F
72 °F
68 °F
82 to 88 °F
78 to 82 °F
74 to 78 °F
Below 74 °F
→
→
→
→
The operating mode and standard thermostat settings are selected automatically
when operation begins.
● When automatic operation is initiated, the fan will run at very low speed for about
one minute while the unit detects and selects the proper operating mode.
During Cooling/Dry mode:
Set the thermostat to a temperature setting
that is lower than the current room tempera-
ture. The Cooling and Dry modes will not
operate if the thermostat is set higher than
the actual room temperature (in Cooling
mode, the fan alone will operate).
● Once the operating mode has been set, the mode will not change even if the
room temperature changes.
● If the START/STOP button is pressed to recommence operation within two hours
after stopping automatic operation, the unit will begin operating from the same
mode as before.
During Fan mode:
● Fan operation begins when room tem-
perature in the vicinity of the air condi-
tioner rises above the set thermostat
temperature; when the temperature
drops, fan operation stops.
Cooling:
● Use to cool your room.
● If the air emitted feels too cool, raise
the thermostat setting.
Dry:
● Use for gently cooling while dehumidifying your room.
● You cannot heat the room during Dry mode.
● During Dry mode, the unit will operate at low speed; in order to adjust room
humidity, the indoor unit’s fan may stop from time to time. Also, the fan may
operate at very low speed when detecting room humidity.
● The fan speed cannot be changed manually when Dry mode has been selected.
Fan:
● Use to circulate warm air from ceiling area throughout room when using space
heaters.
En-10
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OPERATION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
To Select Mode Operation
SLEEP
TIMER
Press the START/STOP button.
1
The indoor unit’s OPERATION indicator light (red) will be on.
The air conditioner will start operating.
COOL
Press the MASTER CONTROL button to select the de-
2
MASTER
SET SET
FAN
sired mode.
CONTROL TEMP. TIME CONTROL
Each time the button is pressed, the mode will change in the following
order.
AUTO
s
COOL
s
DRY
s
*HEAT
FAN
t
t
About three seconds later, the entire display will reappear.
Example: When set to COOL
To Set the Thermostat
SLEEP
TIMER
Press the SET TEMP. buttons.
button: Press to raise the thermostat setting.
button: Press to lower the thermostat setting.
●Thermostat setting range:
MASTER
SET SET
FAN
AUTO .................................. 64 to 88 °F
CONTROL TEMP. TIME CONTROL
* Heating ............................... 60 to 88 °F
Cooling/Dry ........................ 64 to 88 °F
The thermostat cannot be used to set room temperature during the FAN mode (the
temperature will not appear on the remote control unit’s display).
About three seconds later, the entire display will reappear.
Example: When set to 82 °F
The thermostat setting should be considered a standard value, and may differ
somewhat from the actual room temperature.
To Set the Fan Speed
SLEEP
TIMER
Press the FAN CONTROL button.
Each time the button is pressed, the fan speed changes in the following order:
AUTO
s
HIGH
s
MED
LOW
s
s
AUTO
About three seconds later, the entire display will reappear.
MASTER
SET SET
FAN
CONTROL TEMP. TIME CONTROL
When set to AUTO:
* Heating : Fan operates so as to optimally circulate warm air.
However, the fan will operate at very low speed when the temperature
of the air from the indoor unit is low.
Cooling : As the room temperature approaches that of the thermostat setting,
the fan speed becomes slower.
Example: When set to AUTO
Fan
: The fan alternately turns on and off; when on, the fan runs at the low
fan speed.
The fan will operate at a very low setting during Monitor operation
and at the start of the Heating mode.
To Stop Operation
Press the START/STOP button.
The OPERATION indicator light (red) will turn off.
En-11
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OPERATION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
About Mode Operation
AUTO:
COOLING MODEL
● When the room temperature is 4 °F
higher than the set temperature, the
Cooling Operation
mode will switch between Cooling and
Drying.
Dry Operation
Thermostat control
● During the Drying mode operation, the
FAN setting should be switched to LOW
for a gently cooling effect during which
the fan may temporarily stop rotating.
4 °F
● If the mode automatically selected by the
Setting temperature
unit is not satisfactory, see page 6 for in-
structions on changing the mode setting
(COOL, DRY, FAN).
AUTO (* AUTO CHANGEOVER):
HEAT & COOL MODEL (Reverse cycle)
● When AUTO CHANGEOVER is selected, the air conditioner selects the appropri-
ate operation mode (Cooling or Heating) according to your room’s present tem-
perature.
● When AUTO CHANGEOVER is first selected, the fan will operate at very low speed
for about one minute while the unit determines the current conditions of the
room and accordingly selects the proper operation mode.
● When the air conditioner has adjusted your room’s temperature to near the ther-
mostat setting, it will begin monitor operation. In the monitor operation mode,
the fan will operate at low speed. If the room temperature subsequently changes,
the air conditioner will once again select the appropriate operation (Heating, Cool-
ing) to adjust the temperature to the value set in the thermostat. (The monitor
operation range is 4 °F relative to the thermostat setting.)
● If the mode automatically selected by the unit is not satisfactory, see page 6 for
instructions on changing the mode setting (HEAT, COOL, DRY, FAN).
*Heating:
● Use to warm your room.
● When Heating mode is selected, the air conditioner will operate at very low fan
speed for about 3 to 5 minutes, after which it will switch to the selected fan set-
ting. This period of time is provided to allow the indoor unit to warm up before
begin full operation.
* During Heating mode:
Set the thermostat to a temperature set-
ting that is higher than the current room
temperature. The Heating mode will not
operate if the thermostat is set lower than
the actual room temperature.
● When the room temperature is very low, frost may form on the outside unit, and
its performance may be reduced. In order to remove such frost, the unit will
automatically enter the defrost cycle from time to time. During Automatic De-
frosting operation, the OPERATION indicator light (red) will flash, and the heat
operation will be interrupted.
During Cooling/Dry mode:
Set the thermostat to a temperature set-
ting that is lower than the current room
temperature. The Cooling and Dry modes
will not operate if the thermostat is set
higher than the actual room temperature
(in Cooling mode, the fan alone will oper-
ate).
Cooling:
● Use to cool your room.
During Fan mode:
The heat and cool functions of this unit
cannot operate in the Fan mode.
Dry:
● Use for gently cooling while dehumidifying your room.
● You cannot heat the room during Dry mode.
● During Dry mode, the unit will operate at low speed; in order to adjust room
humidity, the indoor unit’s fan may stop from time to time. Also, the fan may
operate at very low speed when detecting room humidity.
● The fan speed cannot be changed manually when Dry mode has been selected.
Fan:
● Use to circulate the air throughout your room.
En-12
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TIMER OPERATION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Before using the timer function, be sure that the remote control unit is set to the current time (See page 5).
To Use the ON timer or OFF timer
SLEEP
TIMER
Press the START/STOP button
(if the unit is already operating, proceed to step 2).
The indoor unit’s OPERATION indicator light (red) will turn on.
TIMER
ON
1
2
MASTER
SET SET
CONTROL TEMP. TIME CONTROL
FAN
Press the TIMER button to select the OFF timer or ON
timer operation.
Each time the button is pressed the timer function changes in the follow-
ing order:
To Cancel the Timer
Use the TIMER button to select “TIMER
RESET.”
The air conditioner will return to normal
operation.
sRESET
PROGRAM(OFF → ON, OFF ← ON)
sOFF
sON
t
To Change the Timer Settings
The indoor unit’s TIMER indicator light (green) will turn on.
Perform steps 2 and 3.
To Stop Air Conditioner Operation
while the Timer is Operating
Use the SET TIME buttons to adjust the desired OFF
time or ON time.
Set the time while the time display is flashing (the flashing will continue
for about five seconds).
3
Press the START/STOP button.
To Change Operating Conditions
If you wish to change the operating
button: Press to advance the time.
button: Press to reverse the time.
conditions (Mode, Fan Speed, Thermostat
Setting), after making the timer setting,
wait until the entire display reappears, then
press the appropriate buttons to change to
the desired operating condition.
About five seconds later, the entire display will reappear.
To Use the PROGRAM timer
Press the START/STOP button
SLEEP
TIMER
TIMER
ON
1
(if the unit is already operating, proceed to step 2).
The indoor unit’s OPERATION indicator light (red) will turn on.
MASTER
SET SET
FAN
CONTROL TEMP. TIME CONTROL
Set the desired times for OFF timer and ON timer.
2
See the section “To Use the ON timer or OFF timer” to set the desired
To Cancel the Timer
mode and times.
About three seconds later, the entire display will reappear.
The indoor unit’s TIMER indicator light (green) will turn on.
Use the TIMER button to select “TIMER
RESET.”
The air conditioner will return to normal
operation.
Press the TIMER button to select the PROGRAM timer
3
To Change the Timer Settings
operation (either OFF → ON or OFF ← ON will display).
1. Follow the instructions given in the section
“To Use the ON Timer or OFF Timer” to se-
lect the timer setting you wish to change.
The display will alternately show “OFF timer” and “ON timer”, then change
to show the time setting for the operation to occur first.
● The PROGRAM timer will begin operation. (If the ON timer has been
selected to operate first, the unit will stop operating at this point.)
2. Press the TIMER button to select either
OFF → ON or OFF ← ON.
To Stop Air Conditioner Operation
while the Timer is Operating
About five seconds later, the entire display will reappear.
Press the START/STOP button.
To Change Operating Conditions
If you wish to change the operating
conditions (Mode, Fan Speed, Thermostat
Setting), after making the timer setting,
wait until the entire display reappears, then
press the appropriate buttons to change to
the desired operating condition.
En-13
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TIMER OPERATION
About the PROGRAM timer
About the ON timer
● The PROGRAM timer allows you to integrate OFF timer
and ON timer operations in a single sequence. The se-
quence can involve one transition from OFF timer to ON
timer, or from ON timer to OFF timer, within a twenty-
four hour period.
● The timer function is designed to bring your room to a
comfortable temperature by the set time; as a result, the
unit automatically begins operation before the set time
so that the room reaches the desired temperature by the
time set on the timer.
● The first timer function to operate will be the one set near-
est to the current time. The order of operation is indi-
cated by the arrow in the remote control unit’s display
(OFF → ON, or OFF ← ON).
● The hotter it is in summer, or the colder it is in winter, the
earlier that operation will begin.
* During Heating Operation ....... from 45 to 10 minutes be-
fore set time.
● One example of PROGRAM timer use might be to have
the air conditioner automatically stop (OFF timer) after
you go to sleep, then start (ON timer) automatically in
the morning before you rise.
During Cooling/Dry Operation ... from 20 to 10 minutes be-
fore set time.
During Fan Operation .............. at the set time.
SLEEP TIMER OPERATION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Unlike other timer functions, the SLEEP timer is designed to set the duration of time in which the unit does not operate.
To Use the SLEEP timer
While the air conditioner is operating or stopped, press the
SLEEP
TIMER
SLEEP button.
SLEEP
Both the indoor unit’s OPERATION indicator light (red) and the TIMER indicator
light (green) will turn on.
COOL
MASTER SET SET FAN
CONTROL TEMP. TIME CONTROL
To Change the Timer Settings
Press the SLEEP button once again and set the time using the
SET TIME buttons.
Set the time while the Timer Mode Display is flashing (the flashing will continue for
about five seconds).
To Cancel the Timer:
Use the TIMER button to select “TIMER
RESET”.
The air conditioner will return to normal
operation.
button: Press to advance the time.
button: Press to reverse the time.
To Stop the Air Conditioner During
Timer Operation:
About five seconds later, the entire display will reappear.
Press the START/STOP button.
About the SLEEP timer
To prevent excessive warming or cooling during sleep, the SLEEP timer function automatically modifies the thermostat setting
in accordance with the time setting. When the set time has elapsed, the air conditioner completely stops.
During Cooling/Dry operation:
When the SLEEP timer is set, the thermostat setting is auto-
matically raised 2 °F every sixty minutes. When the thermo-
stat has been raised a total of 4 °F, the thermostat setting at
that time is maintained until the set time has elapsed, at which
time the air conditioner automatically turns off.
SLEEP timer setting
Set time
1 hour
4 °F
2 °F
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ADJUSTING THE DIRECTION OF AIR CIRCULATION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Vertical (up-down) direction of airflow is adjusted by pressing the remote control unit’s AIR FLOW DIRECTION VERTICAL SET
button. Horizontal (right-left) direction of airflow is adjusted by pressing the remote control unit’s AIR FLOW DIRECTION
HORIZONTAL SET button.
DANGER!
Vertical Air Direction Adjustment
Never place fingers or foreign objects inside
the outlet ports, since the internal fan oper-
ates at high speed and could cause personal
injury.
Press the AIR FLOW DIRECTION VERTICAL SET button.
Each time the button is pressed, the air direction range will change as follows:
1
2
3
4
5
6
7
● Always use the remote control unit’s
AIR FLOW DIRECTION button to adjust
the UP/DOWN air direction flaps or
RIGHT/LEFT air direction louvers. At-
tempting to move them manually
could result in improper operation; in
this case, stop operation and restart.
The louvers should begin to operate
properly again.
Types of Air flow Direction Setting:
1,2,3,4
5,6,7
:
:
During Cooling/Dry Modes
* During Heating mode
The remote control unit’s display does
not change.
Fig. 9
● During use of the Cooling and Dry
modes, do not set the UP/DOWN air
direction flaps in the Heating range (5
to 7) for long periods of time, since
water vapor may condense near the
outlet louvers and drops of water may
drip from the air conditioner.
● Use the air direction adjustments within the ranges shown above.
● The vertical airflow direction is set automatically as shown, in accordance with
the type of operation selected.
During Cooling/Dry mode : Horizontal flow 1
* During Heating mode
: Downward flow 7
● When used in a room with infants, chil-
dren, elderly or sick persons, the air
direction and room temperature
should be considered carefully when
adjusting settings.
● During AUTO mode operation, for the first minute after beginning operation,
airflow will be horizontal 1; the air direction cannot be adjusted during this pe-
riod.
SET
SWING
Horizontal Air Direction Adjustment
SET
SWING
TIME TEST
Press the AIR FLOW DIRECTION HORIZONTAL SET button.
Each time the button is pressed, the air direction range will change as follows:
DJUST RUN ACL
1
2
3
4
5
Example: When set to vertical air direc-
The remote control unit’s display does
not change.
tion
RIGHT/LEFT air direction louvers
● Use the air direction adjustments within the ranges shown above.
SET
SWING
SET
SWING
TIME
ENERGY
SAVE
ADJUST
Example: When set to horizontal air
direction
Fig. 10
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ADJUSTING THE DIRECTION OF AIR CIRCULATION
Vertical (up-down) direction of airflow is adjusted by pressing the Remote Control Unit’s AIR FLOW DIRECTION button. Hori-
zontal (right-left) airflow direction is adjusted manually, by moving the Air Flow Direction Louvers.
Whenever making horizontal airflow adjustments, start air conditioner operation and be sure that the vertical air direction
louvers are stopped.
Vertical Air Direction Adjustment
Press the AIR FLOW DIRECTION button (Fig. 6 Q).
Each time the button is pressed, the air direction range will change as follows:
Cooling/Dry
1
1
2
2
3
3
(6)NOTE
mode
4
5
6
7
Fan mode
● Use the air direction adjustments within the ranges shown above.
CAUTION!
● The vertical airflow direction is set automatically as shown, in accordance with
Never place fingers or foreign objects inside
the outlet ports, since the internal fan oper-
ates at high speed and could cause personal
injury.
the type of operation selected.
During Cooling/Dry modes : Horizontal flow 1
During Fan mode
: Downward flow 6
● If you wish to select a different airflow direction, you may use the remote control
● Always use the remote control unit’s
AIR FLOW DIRECTION button to adjust
the vertical airflow louvers. Attempt-
ing to move them manually could re-
sult in improper operation; in this case,
stop operation and restart. The louvers
should begin to operate properly
again.
unit’s AIR FLOW DIRECTION button to choose a different setting.
● During AUTO mode operation, for the first minute after beginning operation,
airflow will be horizontal 1; the air direction cannot be adjusted during this pe-
riod.
NOTE
You can select the air direction 1, 2, 3, or 6 (downward) by pressing the AIR
FLOW DIRECTION button.
● When used in a room with infants, chil-
dren, elderly or sick persons, the air
direction and room temperature
should be considered carefully when
making settings.
Use the air direction 6 when you want to cool yourself for a while after taking
a bath or shower, or after coming back home in summer months.
But, for prevention of condensation on the louver, the air direction 6 is auto-
matically released after 30 minutes and turned to the air direction 3.
● Always operate the Air Flow Direction
Louvers and the Power Diffuser with
the air flow direction buttons on the
remote control. Forcible movement by
hand can cause incorrect operation. In
such a case, stop the operation to let
the unit return to normal condition.
Right-Left Adjustment
Adjust the Right-Left louvers.
● Move the Right-Left louvers to adjust air flow in the direction you prefer.
Right-Left Louvers
knob
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SWING OPERATION
Begin air conditioner operation before performing this procedure.
To select SWING Operation
Press the SWING LOUVER button (Fig. 6 R).
The SWING indicator lamp (orange) (Fig. 3 7) will light.
In this mode, the Air Flow Direction Louvers will swing automatically to direct
the airflow both up and down.
To Stop SWING Operation
Press the SWING LOUVER button (Fig. 6 R) once again.
The SWING indicator lamp (orange) (Fig. 3 7) will go out.
Airflow direction will return to the setting before swing was begun.
About Swing Operation
● The SWING range is as follows:
Cooling/Dry
NOTE
1
1
3, (4
7)
mode
3, 4
7
Fan mode
NOTE
The air swings between 4 and 7 by pressing the SWING
LOUVER button after selecting the air direction 6 (down-
ward) by pressing the AIR FLOW DIRECTION button.
Use this operation when you want to cool yourself for a
while after taking a bath or shower, or after coming back
home in summer months.
● The SWING operation may stop temporarily when the air
conditioner’s fan is not operating or when operating at
very low speeds.
● The airflow direction can not be adjusted during SWING
operation even when the AIR FLOW DIRECTION button is
pressed.
But, for prevention of condensation on the louver, the
swing of the air direction 4 ↔ 7 is automatically released
after 30 minutes and turned to the swing of the air direc-
tion 1 ↔ 3.
MANUAL AUTO OPERATION
Use the MANUAL AUTO operation in the event the Remote Control Unit is lost or otherwise unavailable.
How To Use the Main Unit Controls
Press the MANUAL AUTO button (Fig. 2 2) on the main
● When the air conditioner is operated
unit control panel.
To stop operation, press the MANUAL AUTO button once again.
(Controls are located inside the Intake Grille.)
with the controls on the Main unit, it
will operate under the same mode as
the AUTO mode selected on the Re-
mote Control Unit (see page 8).
● The fan speed selected will be
“AUTO” and the thermostat setting
will be standard.
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SWING OPERATION
Begin air conditioner operation before performing this procedure.
To select Vertical airflow SWING Operation
Press the AIR FLOW DIRECTION VERTICAL SWING button .
The SWING indicator light (VERTICAL SWING) (orange) will turn on.
In this mode, the UP/DOWN air direction flaps will swing automatically to direct the
air flow both up and down.
SET
SWING
SET
SWING
TTEST
ENERGY
SAVE
UN ACL
To Stop Vertical airflow SWING Operation
Example: When set to vertical swing
Press the AIR FLOW DIRECTION VERTICAL SWING button
once again.
The SWING indicator light (VERTICAL SWING) will turn off.
Airflow direction will return to the setting before swing was begun.
About Swing Operation
● The range of swing is relative to the currently set airflow
direction.
● If the swing range is not as desired, use the remote con-
trol unit’s AIR FLOW DIRECTION VERTICAL SET button to
change the range of swing.
Air flow direction set
Range of swing
1 to 3
● The SWING operation may stop temporarily when the air
conditioner’s fan is not operating, or when operating at
very low speeds.
1
2
3
4
5
6
7
1 to 4
2 to 5
● During use of the Cooling and Dry modes, do not set the
air UP/DOWN direction flaps, in the Heating range (5 to
7) for long periods of time, since water vapor may con-
dense near the outlet louvers and drops of water may
drip from the air conditioner.
3 to 6
4 to 7
5 to 7
1 to 7 (All range)
Air direction range (See page 10, Fig. 9)
To select Horizontal airflow SWING Operation
Press the AIR FLOW DIRECTION HORIZONTAL SWING button.
The SWING indicator light (HORIZONTAL SWING) (orange) will turn on.
In this mode, the RIGHT/LEFT air direction louvers will swing automatically to direct
the airflow both right and left.
SET
SWING
SET
SWING
TIME TEST
ENERGY
SAVE
ADJUST RUN AC
To Stop Horizontal airflow SWING Operation
Example: When set to horizontal swing
Press the AIR FLOW DIRECTION HORIZONTAL SWING button
once again.
The SWING indicator light (HORIZONTAL SWING) will turn off.
Airflow direction will return to the setting before swing was begun.
About Swing Operation
● The range of swing is relative to the currently set airflow
direction.
● If the swing range is not as desired, use the remote con-
trol unit’s AIR FLOW DIRECTION HORIZONTAL SET but-
ton to change the range of swing.
Air flow direction set
Range of swing
1 to 5 (All range)
1 to 3
● The SWING operation may stop temporarily when the air
conditioner’s fan is not operating, or when operating at
very low speeds.
1
2
3
4
5
2 to 4
3 to 5
1 to 5 (All range)
Air direction range (See page 10, Fig. 10)
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ENERGY SAVE OPERATION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
The air conditioner can be operated while keeping energy consumption costs down.
How To Use the ENERGY SAVE OPERATION
SET
SWING
SET
SWING
Press the START/STOP button
(if the unit is already operating, proceed to step 2).
The indoor unit’s OPERATION indicator light (red) will turn on.
1
TIME TEST
ENERGY
SAVE
ADJUST RUN ACL
Press the MASTER CONTROL button to select the
COOL, DRY, *HEAT mode.
2
3
To Cancel the ENERGY SAVE:
Press the ENERGY SAVE button.
ENERGY SAVE can only be used if the MASTER CONTROL button is used
to select the “COOL”, “DRY” or *“HEAT”.
Press the ENERGY SAVE button.
About the ENERGY SAVE
The air conditioner saves energy costs by controlling the thermostat temperature setting.
During Cooling/Dry operation:
The thermostat temperature setting increases by 2 °F as soon
as the ENERGY SAVE button is pressed, and then increases
by another 2 °F after one hour has passed.
In this manner, energy is saved by continuing to cool or dry
at a thermostat temperature of 4 °F above the setting.
ENERGY SAVE setting
1 hour
ENERGY
SAVE ON
4 °F
2 °F
Set temperature
MANUAL AUTO OPERATION
Use the MANUAL AUTO operation in the event the remote control unit is lost or otherwise unavailable.
CAUTION!
How To Use the Main Unit Controls
Do not press the MANUAL AUTO button with
wet hands or pointed objects, otherwise an
electric shock or malfunction may occur.
Press the MANUAL AUTO button on the main unit control
panel.
To stop operation, press the MANUAL AUTO button once again.
● When the air conditioner is operated
with the controls on the Main unit, it
will operate under the same mode as
the AUTO mode selected on the re-
mote control unit (see page 7).
● The fan speed selected will be “AUTO”
and the thermostat setting will be 73 °F.
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CLEANING AND CARE
● Before cleaning the air conditioner, be sure to turn it off and disconnect the power supply.
CAUTION!
● Be sure the intake grille is installed securely.
● When removing and replacing the air filters, be sure not to touch the heat exchanger, as per-
sonal injury may result.
● Turn off the circuit breaker.
Cleaning the Intake Grille
1. Remove the intake grille.
Cleaning the Air Filter
1. Open the intake grille, and remove the air
filter.
1 Place your fingers at both lower ends of the grille
panel, and lift forward; if the intake grille seems to
catch partway through its movement, continue lifting
Lift up the air filter’s handle, disconnect the two lower
tabs, and pull out.
upward to remove.
Air filter handle
Intake Grille
Hooks (two places)
2 Lift up the intake grille fully to remove.
2. Remove dust with a vacuum cleaner or by
washing.
After washing, allow to dry thoroughly in a shady place.
3. Replace the air filter and close the intake
grille.
1 Align the sides of the air filter with the panel, and push
in fully, making sure the two lower tabs are returned
properly to their openings in the panel.
2. Clean with water.
Remove dust with a vacuum cleaner; wipe the unit with
warm water, then dry with a clean, soft cloth.
3. Replace the intake grille.
1 Holding the intake grille horizontally, fasten the two
upper hooks on the unit.
Hooks (two places)
2 Close the intake grille.
(In the illustration, the unit is shown without the intake grille
installed.)
● Dust can be cleaned from the air filter either with a vacuum
cleaner, or by washing the filter in a solution of mild de-
tergent and warm water. If you wash the filter, be sure to
allow it to dry thoroughly in a shady place before rein-
stalling.
Intake Grille
2 Press the intake grille down at the lower sides to close.
● If dirt is allowed to accumulate on the air filter, air flow
will be reduced, lowering operating efficiency and increas-
ing noise.
● During periods of normal use, the air filters should be
cleaned every two weeks.
When using the optional Air Cleaning Filter
● Install the optional air cleaning filter set as instructed (installation instructions are furnished with the air cleaning filter set).
● When used for extended periods, the unit may accumulate dirt inside, reducing its performance. We recommend that the
unit be inspected regularly, in addition to your own cleaning and care. For more information, consult authorized service
personnel.
● When cleaning the unit’s body, do not use water hotter than 100 °F, harsh abrasive cleansers, or volatile agents like
benzene or thinner.
● Do not expose the unit body to liquid insecticides or hairsprays.
● When shutting down the unit for one month or more, first allow the fan mode to operate continuously for about one-half
day to allow internal parts to dry thoroughly.
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Cleaning the Intake Grille
1. Open the Intake Grille.
4. Set the mounting shaft of the Intake Grille
into the bearings at the top of the panel.
1 Place your fingers at both lower ends of the grille
panel, and lift forward; if the grille seems to catch
partway through its movement, continue lifting up-
ward to remove.
2 Pull past the intermediate catch and open the Intake
Grille wide so that it becomes horizontal.
1 Pull the Knobs all the way.
2 Hold the grille horizontal and set the left and right
mounting shafts into the bearings at the top of the
panel.
Mounting
shaft
Intake Grille
Bearing
Intake
Grille
Knob
5. Lock the Intake Grille.
2. Unlock the Intake Grille.
Hold the Intake Grille with one hand and push the Knobs
on the right and the left all the way in to lock the Intake
Grille mounting shafts.
Hold the Intake Grille with one hand and pull the Knobs
on the right and the left all the way to unlock the Intake
Grille.
Intake Grille
Intake Grille
Mounting shaft
Mounting shaft
Knob
Knob
6. Close the Intake Grille.
Raise the horizontal Intake Grille to remove it.
Push the lower edge of the Intake Grille at both ends and
at the center to close it.
3. Clean with water.
Remove dust with a vacuum cleaner: wipe the unit with
warm water, then dry with a clean, soft cloth.
Intake Grille
CAUTION!
Do not operate with open Intake Grille, as this can
cause accidents.
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TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the cir-
cuit breaker, and consult authorized service personnel.
Merely turning off the unit’s power switch will not completely disconnect the unit from the power
source. Always be sure to turn off your circuit breaker to ensure that power is completely off.
WARNING!
Before requesting service, perform the following checks:
Symptom
Problem
See Page
NORMAL
FUNCTION
Doesn’t operate immedi-
ately:
● If the unit is stopped and then immediately started again, the com-
pressor will not operate for about 3 minutes, in order to prevent
fuse blowouts.
—
● Whenever the power switch is turned off then on again, the pro-
tection circuit will operate for about 3 minutes, preventing unit
operation during that period.
Noise is heard:
● During operation and immediately after stopping the unit, the
sound of water flowing in the air conditioner’s piping may be
heard. Also, noise may be particularly noticeable for about 2 to 3
minutes after starting operation (sound of coolant flowing).
—
● During operation, a slight squeaking sound may be heard. This is
the result of minute expansion and contraction of the front cover
due to temperature changes.
*● During Heating operation, a swoosh sound may be heard occa-
sionally. This sound is produced by the Automatic Defrosting op-
eration.
15
—
Odor:
● Occasionally an odor may be emitted from the indoor unit. This
may be the result of room odors (furniture, tobacco, etc.) which
have been taken into the air conditioner.
Mist or steam are
emitted:
● During Cooling or Dry operation, a thin mist may be seen emitted
from the indoor unit. This results from the sudden Cooling of
room air by the air emitted from the air conditioner, resulting in
condensation and misting.
—
*● During Heating operation, the outdoor unit’s fan may stop, and
steam may be seen rising from the unit. This is due to Automatic
Defrosting operation.
15
Airflow is weak or stops:
*● When Heating operation is started, fan speed is temporarily very
low, to allow internal parts to warm up.
*● During Heating operation, if the room temperature rises above
the thermostat setting, the outdoor unit will stop, and the indoor
unit will operate at very low fan speed. If you wish to warm the
room further, set the thermostat for a higher setting.
—
*● During Heating operation, the unit will temporarily stop opera-
tion (between 7 and 15 minutes) as the Automatic Defrosting mode
operates. During Automatic Defrosting operation, the OPERATION
indicator light will flash.
15
● The fan may operate at very low speed during Dry operation or
when the unit is monitoring the room’s temperature.
6
6
● In the monitor AUTO operation, the fan will operate at very low
speed.
Water is produced from
the outdoor unit:
*● During Heating operation, water may be produced by the out-
15
door unit due to Automatic Defrosting operation.
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TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Symptom
Items to check
● Has there been a power failure?
See Page
CHECK ONCE Doesn’t operate at all:
MORE
—
● Has a fuse blown out, or a circuit breaker been tripped?
8 to 9
● Is the timer operating?
● Is the air filter dirty?
Poor Cooling
(or *Heating)
performance:
● Is the air conditioner’s intake grille or outlet port blocked?
● Did you adjust the room temperature settings (thermostat) cor-
rectly?
● Is there a window or door open?
—
● In the case of Cooling operation, is a window allowing bright sun-
light to enter? (Close the curtains.)
● In the case of Cooling operation, are there heating apparatus and
computers inside the room, or are there too many people in the
room?
● Are the remote control unit’s batteries dead?
The unit operates
differently from the
remote control unit’s
setting:
● Are the remote control unit’s batteries loaded properly?
5
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator light flashes,
immediately stop operation, disconnect the power supply, and consult authorized service personnel.
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OPERATING TIPS
Temperature and Humidity Range
Cooling and Dry Mode
95 °F DB / 71 °F WB
64 °F DB / 55 °F WB
115 °F DB
Indoor temperature
Maximum
Minimum
Outdoor temperature Maximum
32 °F DB
Minimum
About 80 % or less
Indoor humidity
Outdoor
Temperature
68 °F or above
If the unit is used for long periods under high-humidity conditions, condensation
may form on the surface of the indoor unit, and drip onto the floor or other objects
underneath.
About 50 % or less
Outdoor
Temperature If the unit is used for long periods under high-humidity conditions, condensation
below 68 °F
may form on the surface of the indoor unit, and drip onto the floor or other objects
underneath.
DB : Dry Bulb Temperature
WB : Wet Bulb Temperature
● If the air conditioner is used under higher temperature conditions than those listed, the built-in protection circuit may
operate to prevent internal circuit damage. Also, during Cooling and Dry modes, if the unit is used under conditions of
lower temperature than those listed above, the heat-exchanger may freeze, leading to water leakage and other damage.
● Do not use this unit for any purposes other than the Cooling, Dehumidifying, and air-circulation of rooms in ordinary
dwellings.
En-24
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