Fujitsu AS*7A User manual

TECHNICAL MANUAL
WALL MOUNTED TYPE AND
FLOOR / CEILING UNIVERSAL TYPE
AIR CONDITIONER

– 1 –
CONTENTS
1. FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 MODEL IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 APPLICATION MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 FEATURES OF EACH MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 PRINTED WIRING BOARD SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.1 COMPACT SII, MII & LISERIES
(AS ✽7A, 7R, 9A, 9R, 12A, 12R, 14A, 14R, 17A, 17R) . . . . . . . . . . . . . . . . . . . . 20
2.2 WALL MOUNTED LARGE AS-SERIES
(AS ✽20A, 20R, 24A, 24R, 30A, 30R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.3 UNIVERSAL AB-SERIES
(AB ✽14A, 14R, 18A, 18R, 24A, 24R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3. OUTLINE AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.1 MODELS : AS ✽7A, 7R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.2 MODELS : AS ✽9A, 9R, 12A, 12R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.3 MODELS : AS ✽14A, 14R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.4 MODELS : AS ✽17A, 17R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5 MODELS : AS ✽20A, 20R, 24A, 24R, 30A, 30R, ASC-502B, ASC-602B . . . . . . 34
3.6 MODELS : AS ✽14A, 14R, 18A, 18R, 24A, 24R . . . . . . . . . . . . . . . . . . . . . . . . . 36
4. DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.1 PERFORMANCE CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.2 TEMPTERATURE RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.3 REFRIGERANT CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.4 AIR VELOCITY DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4.5 NOISE LEVEL MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5. DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.1 REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.2 CIRCUT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
5.3 CONTROLLER CIRCUIT DIAGRAM EZ NUMBER LIST . . . . . . . . . . . . . . . 104
5.4 CONTROLLER PCB CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
5.5 REMOTE CONTROLLER CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 119
6. INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
6.1 SPLIT TYPE ROOM AIR CONDITIONER (AS ✽20A, 24A) . . . . . . . . . . . . . 129
6.2 FLOOR CONSOLE / UNDERCEILING DUAL TYPE
(AB ✽18A, 18R, 24A, 24R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

1. FEATURES
– 2 –
1.1 MODEL IDENTIFICATION
Example
INDOOR UNIT
OUTDOOR UNIT
A
1
TYPE
AS: WALL
MOUNTED
AB: UNIVERSAL
(FLOOR/CEILING)
DESTINATION
MARKET REGIONS
G: 220-240V 50Hz
S: 220V 60Hz
B: 220V 60Hz
T: 240 - (220)V 50Hz
Y: 220-240V 50Hz
H: 220-240V 50Hz
Q: 220V 50Hz
COOLING/
HEATING RANK
BTU/h(kW)
7: 7,000 (2.1)
9: 9,000 (2.7)
12: 12,000 (3.6)
14: 14,000 (4.0)
18: 18,000 (5.2)
20: 20,000 (5.9)
24: 24,000 (7.0)
30: 30,000 (8.8)
FUNCTION
TYPE
A: COOLING
ONLY
R: REVERSE
CYCLE
(HEAT &
COOL)
CONTROL
METHOD
( REMOTE CONTROL )
S: WIRELESS type
(Handy type)
W: WIRELESS type
(Wall fixing type)
SHOWING
MINOR
CHANGES
COLOR
W: WHITE
S
2
∗
3
2
4
4
5
R
6
S
7
G
8
W
109
A
1
TYPE
AO: OUTDOOR
DESTINATION
MARKET REGIONS
G: 220-240V 50Hz
S: 220V 60Hz
B: 220V 60Hz
T: 240 - (220)V 50Hz
Y: 220-240V 50Hz
H: 220-240V 50Hz
Q: 220V 50Hz
COOLING/
HEATING RANK
BTU/h(kW)
7: 7,000 (2.1)
9: 9,000 (2.7)
12: 12,000 (3.6)
14: 14,000 (4.0)
18: 18,000 (5.2)
20: 20,000 (5.9)
24: 24,000 (7.0)
30: 30,000 (8.8)
FUNCTION
TYPE
A: COOLING
ONLY
R: REVERSE
CYCLE
(HEAT &
COOL)
SHOWING
COMPRESSOR
USED
SHOWING
MINOR
CHANGES
SPECIAL
METHOD
FUNCTION
L: LOW AMBIENT
TEMP.
OPERATION
O
2 10
∗
3
2
4
4
5
R
6
W
78
L
9
G
This list applies to new models
since June 1997.

– 3 –
1.2 APPLICATION MODEL
1.2.1 COMPACT SII, MII & LISERIES FOR 7,000 TO 17,000 BTU/h
CLASSIFICATION INDOOR UNIT OUTDOOR UNIT
AS ∗7ASC-W AO ∗7ASC
Cooling AS ∗7ASCCW AO ∗7ASCC
7,000 BTU/h AS ∗7ASD-W AO ∗7ASD
SII-SERIES Reverse cycle AS ∗7RSC-W AO ∗7RSC
AS ∗7RSCCW AO ∗7RSCC
(Cool & Heat) AS ∗7RSD-W AO ∗7RSD
ASC-202EA AOC-202EA
ASC-202A AOC-202A
8,000BTU/h Cooling ASC-202B AOC-202B
MII-SERIES ASC-202C AOC-202C
ASC-202D AOC-202D
ASC8AYB-W AOC8AGBE
AS ∗9ASE-W AO ∗9ANE
AS ∗9ASF-W AO ∗9ANF
AS ∗9ASG-W AO ∗9ANG
AS ∗9ASECW AO ∗9ANEC
AS ∗9ASFCW AO ∗9ANFC
AS ∗9ASGCW AO ∗9ANGC
Cooling AS ∗9ASHCW AO ∗9ANHC
AS ∗9ASMCW AO ∗9ANMC
ASB9ASB-W AOB9ASB
ASA9ASECW AOA9ANEC
FAS25ASAW FAO25ASA
9,000BTU/h ASZ9ASBCW AOZ9ASBC
MII-SERIES AS ∗9RSE-W AO ∗9RSE
AS ∗9RSF-W AO ∗9RSF
AS ∗9RSG-W AO ∗9RSG
AS ∗9RSECW AO ∗9RNEC
AS ∗9RSFCW AO ∗9RSFC
Reverse Cycle AS ∗9RSGCW AO ∗9RSGC
AS ∗9RSHCW AO ∗9RSHC
(Cool & Heat) AS ∗9RSMCW AO ∗9RSMC
ASB9RSACW AOB9RSNC
ASB9RSBCW AOB9RNBC
FAS25RSAW FAO25RSA
FAS25RSBW FAO25RSB
ASQ9RSDCW AOQ9RSDC
ASC-252EA AOC-252EA
ASC-252A AOC-252A
ASC-252B AOC-252B
Cooling ASC-252C AOC-252C
10,000BTU/h ASC-252D AOC-252D
ASC10AYB-W AOC10AGBE
MII-SERIES AS ∗10FSA-W AO ∗10FSA
AS ∗10FSACW AO ∗10FSAC
Reverse cycle AS ∗10USA-W AO ∗10USA
(Cool & Heat) AS ∗10USACW AO ∗10USAC

– 4 –
CLASSIFICATION INDOOR UNIT OUTDOOR UNIT
AS ∗12ASE-W AO ∗12ASE
AS ∗12ASF-W AO ∗12ASF
AS ∗12ASG AO ∗12ASG
AS ∗12FSA-W AO ∗12FSA
AS ∗12ASECW AO ∗12ASEC
AS ∗12ASFCW AO ∗12ASFC
AS ∗12ASGCW AO ∗12ASGC
AS ∗12ASHCW AO ∗12ASHC
AS ∗12FSACW AO ∗12FSAC
Cooling AS ∗12ASMCW AO ∗12ASMC
ASB12ASACW AOB12ASAC
ASB12ASB-W AOB12ARAE
ASB12ASBCW AOB12ARAE
ASB12ASCCW AOB12ASCC
ASZ12ASCCW AOZ12ASBC
ASA12ASECW AOA12ASEC
12,000BTU/h FAS34ASAW FAO34ASA
ASQ12ASBCW AOQ12ASBC
MII-SERIES ASU12ASNCW AOU12ASNC
ASH12ASECW AOH12ASEC
AS ∗12RSE-W AO ∗12RSE
AS ∗12RSF-W AO ∗12RSF
AS ∗12RSG-W AO ∗12RSG
AS ∗12USA-W AO ∗12USA
AS ∗12RSECW AO ∗12RSEC
AS ∗12RSFCW AO ∗12RSFC
Reverse cycle AS ∗12RSGCW AO ∗12RSGC
AS ∗12RSHCW AO ∗12RSHC
(Cool & Heat) AS ∗12RSMCW AO ∗12RSMC
AS ∗12USACW AO ∗12USAC
ASB12RSBCW AOB12RSBC
ASB12RSCCW AOB12RSCC
ASB12RSDCW AOB12RRAE
FAS34RSAW FAO34RSA
FAS34RSBW FAO34RSB
Cooling AS ∗14ASE-W AO ∗14AGD
14,000 BTU/h AS ∗14ASF-W AO ∗14AND
LI-SERIES Reverse cycle AS ∗14RSE-W AO ∗14RGD
(Cool & Heat) AS ∗14RSF-W AO ∗14RND
AS ∗17ASE-W AO ∗17AB
Cooling
17,000 BTU/h AS ∗17ASH-W AO ∗17AN
LI-SERIES AS ∗17ASL-W
Reverse cycle AS ∗17RSB-W AO ∗17RB
(Cool & Heat) AS ∗17RSH-W AO ∗17RN

– 5 –
INDOOR UNIT
CLASSIFICATION Wireless Wireless Wireless
(Handy/ OUTDOOR UNIT
(Handy) (Wall fixing) Wall fixing universal)
20,000 BTU/h
24,000 BTU/h
30,000 BTU/h
Cooling
Reverse cycle
(Cool & Heat)
Cooling
Reverse cycle
(Cool & Heat)
Cooling
Reverse cycle
(Cool & Heat)
AS ∗20AS
(ASC-502B)
AS ∗20RS
AO ∗20AW
AO ∗20AZ
AO ∗20AN
(AOC-502B)
AO ∗20RW
AO ∗20RZ
AO ∗20RM
AS ∗20AW
AS ∗20RW
AS ∗20AG
AS ∗20RG
AS ∗24AS
(ASC-602B)
AS ∗24RS
AO ∗24AW
AO ∗24AB
AO ∗24AN
(AOC-602B)
AO ∗24RW
AO ∗24RZ
AO ∗24RM
AS ∗24AW
AS ∗24RW
AS ∗24AG
AS ∗24RG
AS ∗30AS
AS ∗30RS
AS ∗30AW
AS ∗30RW
AS ∗30AG
AS ∗30RG
AO ∗30AB
AO ∗30RB
INDOOR UNIT
CLASSIFICATION Wireless Wireless Wireless
(Handy/ OUTDOOR UNIT
(Handy) (Wall fixing) Wall fixing universal)
14,000 BTU/h
18,000 BTU/h
24,000 BTU/h
Cooling
Reverse cycle
(Cool & Heat)
Cooling
Reverse cycle
(Cool & Heat)
Cooling
Reverse cycle
(Cool & Heat)
AB ∗14AS
AB ∗14RS
AB ∗14AW
AB ∗14RW
AB ∗14AG
AB ∗14RG
AO ∗14AN
AO ∗14AG
AO ∗14RN
AO ∗14RG
AB ∗18AS
AB ∗18RS
AB ∗18AW
AB ∗18RW
AB ∗18AG
AB ∗18RG
AO ∗18AW
AO ∗18AZ
AO ∗18AN
AO ∗18RW
AO ∗18RZ
AO ∗18RM
AB ∗24AS
AB ∗24RS
AB ∗24AW
AB ∗24RW
AB ∗24AG
AB ∗24RG
AO ∗24AW
AO ∗24AB
AO ∗24AN
AO ∗24RW
AO ∗24RZ
AO ∗24RM
1.2.3 FLOOR/CEILING UNIVERSAL TYPE
AB-SERIES FOR 14,000 TO 24,000 BTU/h
1.2.2 WALL MOUNTED LARGE
AS-SERIES FOR 20,000 TO 30,000 BTU/h

– 6 –
NOTE:
✽ 1 Models ASG30AS and ASY30AS have a No. 20 function.
✽ 2 Models AB ✽14RS have no No. 20 function.
✽ 3 Models AST9RSG and AST12RSG have a No. 2 function.
✽ 4 Models ASY9RSG and ASY12RSG have a No. 18 function.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 Others
Quiet
Auto-restart
Air purifying filter (optional)
Mold prevention filter
Cooling operation even at low
outdoor temperature (0˚C)
Automatic shut flaps
Linked power diffuser
Super vane
Horizontal air flow swing
operation
Vertical air flow swing
operation
Horizontal air direction
adjustment
Vertical air direction adjustment
Energy save operation
Program timer
Sleep timer
OFF timer
Nice morning timer (ON timer)
Auto fan speed
Fan operation
Dry operation
Cooling operation
Heating operation (reverse cycle)
Auto changeover operation
Automatic operation
Wireless remote control unit
• Handy type
Wireless remote control unit
• Wall fixing type
ITEM Cooling
only Reverse cycle Cooling only Reverse cycle Cooling only Reverse cycle Cooling only Reverse cycle Cooling only Reverse cycle Cooling only Reverse cycle
COMPACT S II -type Wall mounted AS✽20 30,000 BTU/h -type FLOOR/CEILING AB ✽ 14 24,000 BTU/h -type COMPACT M II -type
✽3
✽1✽2✽1✽2✽2✽2
( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )
✽4
1.3 FEATURES OF EACH MODEL

– 7 –
++
--
CLOCK
START/STOP
AIR / LOW DIRECTION
+
-
MASTER
CONTROL SET
TIMPL SET TIMPL FAN CONTROL
▼
1
1
2
3
8
9
7
10
11
6
5
4
12 14
13
CLOCK
SWING
LOUVER AIR FLOW DIRECTION
MASTER
CONTROL SET
TIMPL SET TIMPL FAN CONTROL
START/STOP
+
-
SLEEP TIMER
15
16
1.3.1 WIRELESS REMOTE CONTROL UNIT (Handy type)
qSLEEP button
wMASTER CONTROL button
eSET TEMP./SET TIME buttons ( / )
rSignal Transmitter
tTIMER button
yFAN CONTROL button
uSTART/STOP button
iAIRFLOW DIRECTION
VERTICAL SET Button
oAIRFLOW DIRECTION
VERTICAL SWING Button
!0 AIRFLOW DIRECTION
HORIZONTAL SET Button
!1 AIRFLOW DIRECTION
HORIZONTAL SWING Button
Rear Side
!2 TIME ADJUST button
!3 ACL button
(located inside battery compartment)
!4 TEST RUN button
• This button is used when installing the air condi-
tioner, and should not be used under normal con-
ditions, as it will cause the air conditioner's ther-
mostat function to operate incorrectly.
• lf this button is pressed during normal operation,
the unit will switch to test operation mode, and the
Indoor Unit's OPERATION Indicator Lamp and
TIMER Indicator Lamp will begin to flash simulta-
neously.
• 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.
!5 AIRFLOW DIRECTION
VERTICAL SET Button
!6 AIRFLOW DIRECTION
VERTICAL SWING Button
• Wireless type • Compact type SII, MII only

– 8 –
Remote Control Unit Display
!7 Remote Control Unit Display
!8 Transmit Indicator
!9 Clock Display
@0 Operating Mode Display
@1 Timer Mode Display
@2 Fan Speed Display
@3 Temperature Set Display
@4 Timer Set Indicator
@5 Temperature Set Indicator
@6 Compact type SII, MII only
LOW
MED
QUIET
HIGH
AUTOAUTO
COOL
HEAT
DRY
FAN
OFF ON SLEEP
HM
°C
ON
OFF
CLOCK TIMER RESET
LOW HIGH
▲▲
17
18
19
20
21
22
23
24
25
26

– 9 –
1.3.2 WIRELESS REMOTE CONTROL UNIT ( Wall fixing type )
qSLEEP button
wMASTER CONTROL button
eSET TIME buttons (▲/ ▼)
rSET TEMP. buttons (▲/ ▼)
tSignal Transmitter
yTIMER button
uFAN CONTROL button
iSTART/STOP button
oAIRFLOW DIRECTlON
VERTICAL SET Button
!0 AIRFLOW DIRECTION
VERTICAL SWING Button
!1 AIRFLOW DIRECTION
HORIZONTAL SET Button
!2 AIRFLOW DIRECTlON
HORIZONTAL SWING Button
!3 ENERGY SAVE Button
Inside of battery cover
!4 TIME ADJUST button
!5 ACL button
(located inside battery compartment)
!6 TEST RUN button
• This button is used when installing the air condi-
tioner, and should not be used under normal con-
ditions, as it will cause the air conditioner's ther-
mostat function to operate incorrectly.
• lf this button is pressed during normal operation, the
unit will switch to test operation mode, and the Indoor
Unit's OPERATION Indicator Lamp and TIMER
Indicator Lamp 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.
!7 CODE CHANGE Switch
• Switching the remote controller code.
• Use remote controller code A (on the leftmost side) to
operate the unit using the remote controller.
• When it is necessary to switch the remote con-
troller code. contact a service technician since the
PCB remote controller code of the indoor unit
must also be switched.
45
7
2
13
910 11 12 8
3
6
1
17 16
15
14
Remote Control Unit Display !8 Remote Controller Display
!9 Transmit lndicator
@0 Clock Display
@1 Operating Mode Display
@2 Timer Mode Display
@3 Fan Speed Display
@4 Temperature Set Display
@5 Energy Save Display
HM
LOW HIGH LOW
MED
HIGH
COOL
HEAT
AUTO AUTO
(A)
°CDAY
FAN
ENERGY SAVE
TIMER SLEEP
OFF
ON TIMER RESET
ON
OFF
▼
▼
18 19
22
20
23
21
25
24

– 10 –
1.3.3 WIRELESS REMOTE CONTROL UNIT
qSLEEP button
wMASTER CONTROL button
eSET TEMP./SET TIME buttons ( / )
rSignal Transmitter
tTIMER button
yFAN CONTROL button
uSTART/STOP button
iBattery compartment lid
Inside of the battery compartment lid
oAIRFLOW DIRECTION button
!0 ENERGY SAVE button
!1 CODE CHANGE (Slide Switch)
Switching the remote control unit code.
(Max. 4 units)
!2 TIME ADJUST button
!3 TEST RUN button
• This button is used when installing the air con-
ditioner, and should not be used under normal
conditions, as it will cause the air conditioner's
thermostat function to operate incorrectly.
• lf this button is pressed during normal opera-
tion, the unit will switch to test operation mode,
and the Indoor Unit's OPERATION Indicator
Lamp and TIMER Indicator Lamp 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.
!4 ACL button
!5 Remote Control Unit Display
!6 Transmit Indicator
!7 Clock Display
!8 Operating Mode Display
!9 Timer Mode Display
@0 Fan Speed Display
@1 Temperature Set Display
@2 Timer Set Indicator
@3 Temperature Set Indicator
A B C D
COOL
FAN
HEAT
AUTO AUTO
HIGH
MED
LOW
TIMER
TIMER RESET
CLOCK SLEEP
ENERGY SAVE
C
AM
PM
ON
OFF
OFF
ON
HM
DRY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

COOLING MODEL : This does not apply to the COMPACT type SII, MII.
• When the room temperature is 2°C higher than the set
temperature, the mode will switch between Cooling and
Drying.
• During Drying mode operation, FAN setting is switched to
LOW gentle cooling effect, and the room fan may stop
rotating temporarily.
• If the mode automatically selected by the unit is not what
you wish, select one of the mode operation (COOL, DRY,
FAN).
2°C
Setting temperature
Cooling Operation
Dry Operation
Thermostat control
– 11 –
1.3.4 AUTOMATIC OPERATION
COOLING MODEL : This applies to the COMPACT type SII and MII.
• Depending on the room temperature at the time operation
begins, the operating mode will be switched automatically
as ahown in the accompanying table.
Also, depending on the operating mode, the room tem-
perature setting will cause the "standard" temperature to
be set as shown. The operating mode and standrad ther-
mostat settings are selected automatically when opera-
tion 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.
• 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 oper-
ation, the unit will begin operating from the same mode as
before.
Actual Room Operating Mode Thermostat Setting
Temperature (standard setting)
30°C or above ➡Cooling ➡27°C
27°C to 30°C ➡Cooling ➡26°C
25°C to 27°C ➡Dry ➡24°C
23°C to 25°C ➡Dry ➡22°C
Below 23°C ➡Dry ➡20°C
HEAT & COOL MODEL ( Reverse cycle )
• 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 tem-
perature setting will cause the "standard" temperature to
be set as shown.
The operating mode and standrad 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.
• Once the operating mode has been set, the mode will not
change even if the room temperature changes. However,
during the monitor operation mode, if the room tempera-
ture changes to below 22°C, the mode will automatically
switch to Heat, and when it rises above 24°C the mode
will automatically switch to Dry.
•
When in the monitor mode, the fan will operate very slowly.
• If the START/STOP button is pressed to recommence
operation within two hours after stopping automatic oper-
ation, the unit will begin operating from the same mode as
before.
Actual Room Operating Mode Thermostat Setting
Temperature (standard setting)
30°C or above ➡Cooling ➡27°C
27°C to 30°C ➡Cooling ➡26°C
25°C to 27°C ➡Dry ➡24°C
22°C to 25°C ➡Monitor
Below 22°C ➡Heating ➡23°C

– 12 –
1.3.5 AUTO CHANGEOVER OPERATION
HEAT & COOL MODEL (Reverse cycle)
• When AUTO CHANGEOVER operation is selected, the air conditioner selects the appropriate operation mode (Cooling or
Heating) in response to your room's temperature.
• When AUTO CHANGEOVER operation first selected, the fan will operate at very low speed for about one minute, during
which time the unit detects the room conditions and selects the proper operating mode.
• When the air conditioner has adjusted your room's temperature to near the thermostat 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 condi-
tioner will once again select the appropriate operation (Heating, Cooling) to adjust the temperature to the value set in the ther-
mostat. (The monitor operation range is ±2°C relative to the thermostat setting.)
• If the mode automatically selected by the unit is not what you wish, select one of the mode operation
(HEAT, COOL, DRY, FAN).
1.3.6 HEATING OPERATION (REVERSE CYCLE)
• 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 setting. This period of time is provided to allow the indoor unit to warm up before begin full opera-
tion.
• 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 Defrosting operation,
the OPERATION indicator lamp (red) will flash, and the heat operation will be interrupted.
1.3.7 COOLING OPERATION
• Use to cool your room.
1.3.8 DRY OPERATION
• Use for gently cooling while dehumifdifying 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.
• Then fan speed cannot be changed manually when Dry
mode has been selected.
During Heating mode :
Set the thermostat to a temperature setting 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.
During Cooling/Dry mode :
Set the thermostat to a temperature setting 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 operate).
During Fan mode :
You can not use the unit to heat and cool your room.

– 13 –
1.3.9 FAN OPERATION
• Use to circulate the air throughout your room.
1.3.10 AUTO FAN SPEED
• When the FAN CONTROL switch is set to the AUTO position, the optimum fan speed will be selected automatically in accor-
dance with room temperature and other conditions.
• During the dry mode, fan speed is set automatically and cannot be changed.
• The breeze is :
1.3.11 NICE MORNING TIMER (ON TIMER)
When the ON timer is used, the air conditioner not only starts at the set time, but also automatically starts before the set time
according to the difference between the room temperature and the set temperature so the room becomes the desired tempera-
ture at the set time. The time can be set in 5-minute steps.
HIGH 3°C higher
2°C higher 3°C or less
2°C or less MEDIUM 2°C or more
1°C or more 2°C or less
1°C or less LOW
Ta°CTa°CFan mode
Room temperature lowered Room temperature rised
(Room temperature and set temperature
difference = Ta°C)
Tp°CFan mode
47°C or more HIGH
41°C to 47°CMEDIUM
41°C or less LOW
(Indoor heat exchanger temperature = Tp°C)
Cooling operation Heating operation
Room temperature and set
temperature difference Operation start time
Started 20 minutes before set time
Started 15 minutes before set time
Started 10 minutes before set time
Over 10 °C
5 °C0
°C
Under 5 °C
Cooling
Heating Over 20 °C
15 °C0
°C
10 °C5
°C
Under 10 °C
Started 45 minutes before set time
Started 30 minutes before set time
Started 15 minutes before set time
Started 10 minutes before set time

– 14 –
1.3.11 OFF TIMER
When the timer reaches the set time, the air conditioner will be turned off.
1.3.13 PROGRAM TIMER
Combines the OFF timer and the ON timer for one cycle. ( OFF ➱ON or ON ➱CFF )
Starts operation from the OFF timer or the ON timer, Whichever is closer to the current time.
1.3.14 ENERGY SAVE OPERATION
Wireless type (Wall fixing type) only
1.3.12 SLEEP TIMER OPERATION
During Heating operation [HEAT & COOL MODEL (Reverse cycle) only ] :
When the SLEEP timer is set, the thermostat setting is
automatically lowered 1°C every thirty minutes. When the
thermostat has been lowered a total of 4°C, the thermo-
stat setting at that time is maintained until the set time has
elapsed, at which time the air conditioner automatically
turns off.
SLEEP timer setting
1°C2°C3°C4°C
30
minutes
1 hour
1 hour
30 minutes
Set time
Setting temperature
During Cooling/Dry operation :
When the SLEEP timer is set, the thermostat setting is
auto-matically raised 1°C every sixty minutes. When the
thermostat has been raised a total of 2°C, the thermostat
setting at that time is maintained until the set time has
elapsed, at which time the air conditioner automatically
turns off.
During Heating operation [HEAT & COOL MODEL (Reverse cycle) only ] :
The thermostat temperature setting decreases by 1°C as
soon as the ENERGY SAVE button is pressed, and then
decreases by another 1°C every thirty minutes.
Afterwards, energy consumption is saved by continuing to
heat at a thermostat temperature of 4°C Iess than that
set.
SLEEP timer setting
1°C2°C
1 hour
Set time
Setting temperature
ENERGY SAVE setting
1°C2°C3°C4°C
30
minutes
1 hour
1 hour
30 minutes
ENERGY
SAVE ON
Setting temperature

1.3.15 VERTICAL AIR DIRECTION ADJUSTMENT
Each time the button is pressed, the air direction range will change as follows :
– 15 –
During Cooling/Dry operation :
The thermostat temperature setting increases by 1°C as
soon as the ENERGY SAVE button is pressed, and then
increases by another 1°C after one hour has passed.
Afterwards, energy consumption is saved by continuing to
cool or dry at a thermostat temperature of 2°C more than
that set.
ENERGY SAVE setting
1 hour
ENERGY
SAVE ON
Set temperature
1˚C 2˚C
4
5
6
7
1
2
3
UNIVERSAL TYPE
7
65432
1
WALL MOUNTED TYPE
1
2
3
4
5
6
COMPACT SII TYPE
Types of Airflow Direction Setting :
q,w,e,r: During Cooling/Dry Modes
t,y,u: During Heating mode
The Remote Control Unit's display does not change.
• 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 q
During Heating mode : Downward flow u
• During AUTO mode operation, for the first minute after beginning operation, airflow will be horizontal q; the air direction can-
not be adjusted during this period.

– 16 –
1.3.16 HORIZONTAL AIR DIRECTION ADJUSTMENT
Each time the button is pressed, the air direction range will change as follows:
1.3.17 VERTICAL AIRFLOW SWING OPERATION
• The range of swing is relative to the currently set airflow direction.
The Remote Controller's display does not change.
• Use the air direction adjustments within the ranges shown above.
• If the swing range is not as desired, use the Remote Control Unit's AIRFLOW DIRECTION VERTICAL SET button to change
the range of swing.
• The SWING Operation may stop temporarily when the air conditioner's fan is not operating, or when operating at very low
speeds.
• During use of the Cooling and Dry modes, do not set the Air UP/DOWN Direction Flaps, in the Heating range (tto u) for long
periods of time, since water vapor may condense near the outlet louvers and drops of water may drip from the air conditioner.
RIGHT/LEFT Air Direction Louvers
RIGHT/LEFT Air Direction Louvers
12345
15
2 4
3
Airflow direction set
Range of swing
qqto wqto e
qto e
wto e
rto t
rto y
tto ytto u
yto uqto u(All range)
tto u
rto urto u
eto yeto y
wto twto t
qto rqto r
qto e
w
e
r
t
y
u
SII Series MII Series AS&AB Series
UNIVERSAL TYPE WALL MOUNTED TYPE

– 17 –
1.3.18 HORIZONTAL AIRFLOW 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 Control Unit's AIRFLOW DIRECTION HORIZONTAL SET button to
change the range of swing.
• The SWING Operation may stop temporarily when the air conditioner's fan is not operating, or when operating at very low
speeds.
1.3.19 SUPER VANE
Our newly developed "Super Vane"configuration boosts airflow by sending cool air quickly to every corner of the room.
1.3.20 LINKED POWER DIFFUSER
By means of our new design of "Power Diffuser" the floor level heating efficiency is considerably improved. By movement
of the up/down direction panels in conjunction with the power diffuser greater comfort can be obtained.
Airflow direction set Range of swing
q
qto t(All range)
eto t
wto r
qto e
qto t(All range)
w
e
r
t
Linked Power
Diffuser
Linked Power
Diffuser
• Horizontal Cooling Airflow • Vertical Heating Airflow
1.3.21 AUTOMATIC SHUT FLAPS
• The upper and lower flaps shut automatically so that dust or foreign matter does not enter the inside of the unit, while the
unit halts.
• The unit looks simple on the outside, as the blow-out section of the air shuts.

1.4 PRINTED WIRING BOARD SETTINGS
<APPLICATION MODEL>
AS∗20A, 20R, 24A, 24R, 30A, 30R
AB∗14A, 14R, 18A, 18R, 24A, 24R
1.4.1 AUTO-RESTART & REMOTE CONTROLLER CODE
– 18 –
1.3.22 COOLING OPERATION EVEN AT A LOW OUTDOOR TEMPERATURE
Cooling operation is possible down to 0°C.
1.3.23 MOLD PREVENTION FILTER
The air filter are specially treated with a mold inhibiting compound.
This stops mold and mildew from forming inside the indoor unit.
1.3.24 AIR PURIFYING FILTER (OPTIONAL)
The electrostatic filter removes dust and minute particles to purify the air in a room.
This is perfect for smokers and for people with allergies during pollen season.
1.3.25 AUTO RESTART
Auto restart function makes the unit to restart automatically in the same operating mode as before after recovery from
stoppage due to a temporary power failure.
1.3.26 QUIET
The large-diameter cross fan can send a larger volume of air while turning more slowly than before. Through the air suc-
tion from the top, smooth airflow and center mount structure, ultimate quietness has been realized while maintaining the
ample air volume and speed.

– 19 –
✩ Confirm the remote controller's "CODE CHANGE Switch"
selection and printed wiring board setting.
· If these are not confirmed, the remote controller cannot be
operated for the air conditioner.
Auto - Restart Enable (default)
Auto - Restart Disable
Remote - Controller Code-A (default)
Remote - Controller Code-B
Remote - Controller Code-C
Remote - Controller Code-D
Disconnect
JM1
JM2
Connect
Disconnect
Connect
Disconnect
JM3
Connect
Connect
Disconnect
Disconnect
Connect
✩
CODE CHANGE Switch
1.4.2 COMPENSATION (HEATING CORRECTION COEFFICIENT)
✩The function of DIP1 does not work on AS and AB models.
Turn the DIP1 off anytime.
2°C
0°C
2°C
4°C(default)
Compensation DIP2
ON
OFF
OFF
ON
DIP3
OFF
ON
OFF
ON
Application (AB model only)
for floor console
for under ceiling
ON
OFF