Fujitsu AU A36LCLU Series Original operating manual

Models Indoor unit
Single type
Outdoor unit
AU*A36LCLU
AU*A45LCLU
AU*A54LCLU
AR*A36LCTU
AR*A45LCTU
AR*C45LCTU
AR*C54LCTU
AB*A36LCT
AB*A45LCT
AB*A54LCT
AO* D36LATT
AO* D45LATT
AO* D54LATT
AOTD60LATT
SERVICE
INSTRUCTION
R410A
3 PHASE TYPE
ROOM AIR CONDITIONER
Single /
Simultaneous
operation multi type
Simultaneous
operation multi type
AU*F18LBL
AU*F22LBL
AU*F24LBL
AR*F18LBTU
AR*F22LBTU
AR*F24LBTU
AB*F18LBT
AB*F22LBT
AB*F24LBT

CONTENTS
1. DESCRIPTION OF EACH CONTROL OPERATION
1-1-1 COOLING CAPACITY CONTROL......................................................................
1-1 COOLING OPERATION............................................................................................ 01-01
01-01
1-2-1 HEATING CAPACITY CONTROL......................................................................
1-2 HEATING OPERATION............................................................................................ 01-02
01-02
1-3-1 INDOOR UNIT CONTROL.................................................................................
1-3 DRY OPERATION..................................................................................................... 01-03
1-4 AUTO CHANGEOVER OPERATION........................................................................ 01-04
1-5 INDOOR FAN CONTROL.......................................................................................... 01-05
1-6 OUTDOOR FAN CONTROL...................................................................................... 01-08
1-7 LOUVER CONTROL.................................................................................................. 01-09
1-8 COMPRESSOR CONTROL....................................................................................... 01-15
1-9 TIMER OPERATION CONTROL............................................................................... 01-16
1-10 ELECTRONIC EXPANSION VALVE CONTROL.................................................... 01-20
1-11 TEST OPERATION CONTROL............................................................................... 01-20
1-12 PREVENT TO RESTART FOR 3 MINUTES............................................................ 01-20
1-13 4-WAY VALVE EXTENSION SELECT.................................................................... 01-21
1-14 AUTO RESTART..................................................................................................... 01-21
1-15 MANUAL AUTO OPERATION................................................................................ 01-21
1-16 PUMP DOWN........................................................................................................... 01-22
1-17 COMPRESSOR PREHEATING............................................................................... 01-23
1-18 DEFROST OPERATION CONTROL....................................................................... 01-23
1-19 OFF DEFROST OPERATION CONTROL............................................................... 01-25
1-20 ECONOMY OPERATION........................................................................................ 01-26
1-21 VARIOUS PROTECTIONS...................................................................................... 01-26
1-22 FORCED COOLING OPERATION.......................................................................... 01-29
1-23 COMPRESSOR STOP OPERATION...................................................................... 01-29
1-24 FRESH AIR CONTROL........................................................................................... 01-29
1-25 EXTERNAL ELECTRICAL HEATER CONTROL.................................................... 01-29
1-26 DRAIN PUMP OPERATION..................................................................................... 01-30
1-27 LOW NOISE OPERATION....................................................................................... 01-31
1-28 PEAK CUT OPERATION......................................................................................... 01-31
1-29 DESCRIPTION OF DISPLAY UNIT......................................................................... 01-32
01-03
1-9-1 WIRELESS REMOTE CONTROLLER................................................................ 01-16
1-29-1 LAYOUT OF DISPLAY UNIT............................................................................ 01-32
1-29-2 DISPLAY MODE............................................................................................... 01-33
1-29-3 ERROR HISTORY MODE................................................................................. 01-36
1-29-4 ERROR CHECK MODE.................................................................................... 01-36
1-9-2 WIRED REMOTE CONTROLLER....................................................................... 01-18

2-1-2 OUTDOOR UNIT DISPLAY................................................................................
2-1-1 INDOOR UNIT DISPLAY....................................................................................
2-1 ERROR DISPLAY......................................................................................................
2. TROUBLE SHOOTING
2-2 TROUBLE SHOOTING WITH ERROR CODE..........................................................
2-3 TROUBLE SHOOTING WITH NO ERROR CODE....................................................
2-4 SERVICE PARTS INFORMATION............................................................................
02-01
02-01
02-02
2-1-3 WIRED REMOTE CONTROLLER DISPLAY...................................................... 02-03
02-38
02-04
02-43
3. DISASSEMBLY PROCESS

1 . DESCRIPTION OF EACH
CONTROL OPERATION
AIR CONDITIONER
3 phase type
Single / Simultaneous operation multi type

1-1. COOLING OPERATION
1-1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
The maximum frequency is limited in the range shown in Figure 1 based on the fan speed mode
and the outdoor temperature.
If the room temperature is 2 °C higher than a set temperature,
the compressor operation frequency will attain to maximum frequency.
If the room temperature is 2.5 °C lower than a set temperature, the compressor
will be stopped.
When the room temperature is between +2 °C to -2.5 °C of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
Minimum
frequency Maximum frequency
AO *D36LATT
AO *D45LATT
AO *D54LATT
AO *D60LATT
30Hz
36Hz
36Hz
36Hz
110Hz
160Hz
160Hz
160Hz
( Table 1 : Compressor Frequency Range )
01-01
AO *D36LATT A zone
B zone
C zone
D ~ F zone
MED LOW QU
Fan speed mode HIGH
110
110
98
76
154
154
114
92
160
160
128
104
DC indoor unit
connection
A zone
B zone
C zone
D ~ F zone
A zone
B zone
C zone
D ~ F zone
A zone
B zone
C zone
D ~ F zone
A zone
B zone
C zone
D ~ F zone
A zone
B zone
C zone
D ~ F zone
A zone
B zone
C zone
D ~ F zone
AO *D36LATT
90
90
76
66
104
104
92
82
118
118
104
92
76
76
72
58
92
92
82
74
104
104
92
80
58
58
58
46
70
70
70
56
76
76
76
58
108
108
82
76
128
128
114
92
144
144
128
104
156
156
138
114
82
82
76
64
112
112
92
90
128
128
110
98
130
130
118
110
76
76
72
60
108
108
90
82
122
122
104
92
126
126
110
106
AO *D45LATT
AO *D54LATT
AO *D60LATT
AO *D54LATT
AO *D45LATT
AC indoor unit
connection
(High static pressure)
[ Hz ]
( Fig 1 : Limit of Maximum Frequency based on Outdoor Temperature )
A zone
B zone
C zone
D zone
E zone
F zone
*Compressor is 4 pole type.
Therefore, [Hz] is described by the twice the value of [rps]
36°C
32°C
21°C
12°C
2°C
When the room
temperature rises
Outdoor air
temperature
34°C
30°C
19°C
10°C
0°C
When the room
temperature drops
.
.
.

1-2. HEATING OPERATION
1-2-1 HEATING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
The maximum frequency is limited in the range shown in Figure 2 based on the outdoor temperature.
If the room temperature is lower 3 °C than a set temperature,
the compressor operation frequency will attain to maximum frequency.
If the room temperature is higher 2.5 °C than a set temperature, the compressor
will be stopped.
When the room temperature is between +2.5 °C to -3 °C of the setting temperature,
the compressor frequency is controlled within the range shown in Table 2.
( Fig 2 : Limit of Maximum Frequency based on Outdoor Temperature )
01-02
19°C
17°C
14°C
12°C
Outdoor air
temperature
When the room
temperature drops
When the room
temperature rises
Minimum
frequency Maximum frequency
AO *D36LATT
AO *D45LATT
AO *D54LATT
AO *D60LATT
36Hz
36Hz
36Hz
36Hz
160Hz
170Hz
170Hz
170Hz
( Table 2 : Compressor Frequency Range )
AO *D36LATT
AO *D45LATT
AO *D54LATT
A ~ C zone
A ~ C zone
A ~ C zone
MED LOW QU
Fan speed mode HIGH
160
170
170
DC indoor unit
connection 130
132
150
108
112
124
92
100
114
AC indoor unit
connection
(High static pressure)
[ Hz ]
AO *D36LATT
AO *D45LATT
AO *D54LATT
AO *D60LATT
130
170
170
170
120
140
156
168
108
128
144
156
A ~ C zone
A ~ C zone
A ~ C zone
A ~ C zone
*Compressor is 4 pole type.
Therefore, [Hz] is described by the twice the value of [rps]
C zone
B zone
A zone
.
.
.

1-3. DRY OPERATION
1-3-1 INDOOR UNIT CONTROL
The compressor rotation frequency shall change according to set temperature and room
temperature variation which the room temperature sensor of the indoor unit has detected
as shown in the Fig 3.
01-03
Room
temperature
Room
temperature
Compressor ON
Ts+1.5 °C
Ts+0.5 °C
Compressor OFF
( Fig.3 : Compressor Control based on Room Temperature )
Ts : Setting temperature
Compressor
ON
OFF
Indoor fan DRY air flow
OFF
( Fig 4 : Indoor Fan Control for DC indoor unit )
10 30 60 180 60 180 60 10 30 (sec)
X zone
Y zone
( Table 3 : Compressor Frequency Range )
AO *D36LATT
AO *D36LATT
X zone
Y zone
X zone
Y zone
X zone
Y zone
X zone
Y zone
Frequency
DC indoor unit
connection
AO *D54LATT
AC indoor unit
connection
(High static pressure)
[ Hz ]
AO *D45LATT
AO *D36LATT
AO *D45LATT
AO *D54LATT
AO *D60LATT
X zone
Y zone
X zone
Y zone
62
0
58
0
70
0
76
0
42
0
46
0
78
0
82
0
X zone
Y zone
X zone
Y zone
Recital
In the case of the Indoor unit of
Duct or Ceiling type
S-LOW
Compressor
ON
OFF
LOW OFF
30 180 120 180 30 (sec)
Indoor fan ON
5 30 5
( Fig 5 : Indoor Fan Control for AC indoor unit )
*It is different by model
(about *300rpm)

1-4. AUTO CHANGEOVER OPERATION
When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum
mode from among the HEATING, COOLING and MONITORING modes. During operation, the
optimum mode is automatically switched in accordance with temperature changes. The temperature
can be set between 18°C and 30°C in 1 °C steps.
When operation starts, only the indoor fan is operated for 1 minute. (Air flow mode: S-LOW)
After 1 minute, depends on the room temperature and outdoor unit's operation mode,
the operation mode is selected in accordance with the below.
( Table 4 : Operation mode selection table )
1
01-04
Room temperature :Tb A zone
Tb > Ts +2 °C
Ts -2 °C > Tb
Ts +2 °C > Tb > Ts -2 °C
Monitoring
Monitoring
HEATING
Ts : Setting temperature
B zone
COOLING
(Automatic DRY)
Monitoring
C zone
Monitoring
Monitoring
==
( Fig.6 : Operation mode selection based on Outdoor Temperature )
COOLING
(Automatic DRY)
[ For all indoor unit ]
A zone
B zone
C zone
32°C
-15°C
Outdoor temperature zone
When COOLING was selected at , the air conditioner operates as follow:
The same operation as COOLING operation of item 5-1 above is performed.
However, the setting temperature is raised 1°C and the room temperature correct coefficient value is 0°C
When the compressor frequency have been below [A]Hz for 8 minutes or the room temperature reaches
"setting temperature -1.5°C" , operation is automatically switched to DRY operation of item 5-3 above
is performed.
However, compressor control based on room temperature is as follows.
If the room temperature reaches "setting temperature +2°C" during DRY operation,
operation returns to COOLING operation.
When HEATING was selected at , the same operation as HEATING operation of item 5-2
above is performed. However, the room temperature correct coefficient value is 0°C.
When the compressor was stopped for 6 consecutive minutes by the temperature control function
after the COOLING or HEATING operation mode was selected at above, operation is switched
to MONITORING and the operation mode is selected again.
1
2
31
4
1
Room
temperature Compressor :ON
Compressor :OFF
Ts - 0.5°C
Ts - 1.5°C
Outdoor
temperature
36 model : 19Hz
45 model : 23Hz
54 model : 21Hz
60 model : 22Hz
[A]Hz
HEATING

1-5. INDOOR FAN CONTROL
1. Fan speed
( Table 5 : Indoor Fan Speed )
01-05
Operation mode Air flow mode Speed (rpm)
730
630
540
460
830
730
500
460
630
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
Operation mode Air flow mode Speed (rpm)
1040
950
800
740
1040
950
800
740
740
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1040
950
840
740
1040
950
840
740
740
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1330
1150
1000
780
1300
1150
1000
780
780
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
830
700
600
550
830
700
600
550
550
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1030
880
740
580
500
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1330
1150
1000
780
1300
1150
1000
780
780
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
830
700
600
550
830
700
600
550
550
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1200
1020
840
670
1220
1020
840
670
670
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1100
910
750
650
1100
910
750
650
650
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
660
540
470
430
660
540
470
430
430
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
690
610
550
470
690
610
550
470
470
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1200
1000
830
680
1200
1000
830
680
680
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1350
1020
840
670
1350
1020
840
670
670
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1360
1150
950
790
1340
1150
950
790
790
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
720
630
570
480
720
630
570
480
480
Operation mode Air flow mode Speed (rpm)
COOLING
HEATING
DRY
HIGH
MED
LOW
QU
HIGH
MED
LOW
QU
AUTO
1050
850
650
500
1030
880
740
580
500
1050
850
650
500
AU *F18LBL
AU *F22LBL
AU *F24LBL
AU *A36LCLU
AU *A45LCLU
AU *A54LCLU AB *A54LCT
AB *A45LCT
AB *A36LCT
AB *F24LBT
AB *F22LBT
AB *F18LBT AR *F18LBLU
AR *F22LBTU
AR *F24LBTU
AR *A36LCTU
AR *A45LCTU

2. FAN OPERATION
The airflow can be switched in 5 steps such as AUTO, QU, LOW, MED, HIGH, while the indoor
fan only runs.
The High Static Pressure Duct type is 4 steps such as AUTO, LOW, MED, HIGH.
3. COOLING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Figure 8.
On the other hand, if switched in [HIGH] [QU], the indoor motor will run at a constant airflow of [COOL]
operation modes QU, LOW, MED, HIGH, as shown in Table 5.
( Fig 8 : Airflow change - over ( COOLING : AUTO ) )
When the room
temperature rises
When the room
temperature drops
Tr : Room temperature
Ts : Setting temperature
Tr-Ts > 2 °C
=
1 °C > Tr-Ts
2 °C > Tr-Ts > 1 °C
=
Tr-Ts > 2.5 °C
=
1.5 °C > Tr-Ts
2.5 °C > Tr-Ts > 1.5 °C
=
HIGH
MED
LOW
01-06
4. HEATING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Figure 9.
On the other hand, if switched in [HIGH] [QU], the indoor motor will run at a constant airflow
of [HEAT] operation modes QU, LOW, MED, HIGH, as shown in Table 5.
( Fig 9 : Airflow change - over ( HEATING : AUTO ) )
Tr-Ts > - 1.5 °C
=
- 2.5 °C> Tr-Ts
- 1.5 °C> Tr-Ts > - 2.5 °C
=
Tr-Ts > - 1 °C
=
- 2 °C> Tr-Ts
- 1 °C> Tr-Ts > - 2 °C
=
When the room
temperature rises When the room
temperature drops
Tr : Room temperature
Ts : Setting temperature
LOW
MED
HIGH
The High Static Pressure Duct type is 4 steps such as AUTO, LOW, MED, HIGH.
The High Static Pressure Duct type is 4 steps such as AUTO, LOW, MED, HIGH.

6. DRY OPERATION
Refer to the Fig 4,5
During the DRY mode operation, the fan speed setting can not be changed.
01-07
5. COOL AIR PREVENTION CONTROL (HEATING mode)
42°C
34°C
Indoor heat exchanger
temperature Indoor heat exchanger
temperature
When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 10,
based on the detected temperature by the indoor heat exchanger sensor on heating mode.
When the compressor does not operate, the indoor fan motor operates about *300rpm.
(High Static Pressure Duct type is stops)
( Fig 10 : Cool Air Prevention Control )
< [HIGH] setting >
HIGH
MED
LOW
Cool air
prevention
39°C
37°C
37°C
32°C
39°C
32°C
Indoor heat exchanger
temperature Indoor heat exchanger
temperature
< The other of [HIGH] setting >
LO (QU)
Cool air
prevention
37°C
34°C
Setting
FAN mode
[ Excluding Duct type ]
*It is different by model.
29°C
Indoor heat exchanger
temperature Indoor heat exchanger
temperature
HIGH
LOW
37°C
32°C
24°C
[ Duct type ]
29°C
Indoor heat exchanger
temperature Indoor heat exchanger
temperature
Setting fan
mode
LOW (QU)
37°C
32°C
24°C
[ High Static Duct type ]
Indoor fan motor operates in set fan mode when the indoor unit heat-exchanger temperature
becomes more than 27°C, and it operates until the compressor stops with a set mode maintained.
(The fan stops until the indoor unit heat-exchanger temperature reaches 27°C)
S-LOW
S-LOW
S-LOW
S-LOW
30°C
30°C
24°C
< [HIGH] setting > < The other of [HIGH] setting >

1-6. OUTDOOR FAN CONTROL
1. Outdoor Fan Motor
Following table shows the fan speed of the outdoor unit.
(Table 6 : Fan speed of the outdoor unit)
Upper fan
Lower fan
Upper fan
Lower fan
The outdoor fan speed is decided depending on the compressor and the outdoor temperature.
The compressor and the fan start-up at the same time,
and the fan stops after the compressor stops and 60 seconds has passed.
The fan doesn't operates for 10 seconds after the fan stops.
The upper fan and the lower fan operates at 500 rpm for 20 seconds after the start-up.
However, the fan operates at 200rpm when the initial rotation speed is 300rpm or less.
COOLING
850/ 780/ 520/ 480/ 400/ 350/ 280 rpm
800/ 750/ 520/ 350/ 280/ 0 rpm
900/ 850/ 780/ 520/ 480/ 400/ 350/ 280 rpm
800/ 750/ 520/ 350/ 280/ 0 rpm
AO *D36LATT
01-08
AO *D45/ 54/ 60LATT
Upper fan
Lower fan
HEATING
850/ 780/ 520/ 350/ 200/ 170/ 150 rpm
850/ 750/ 520/ 350/ 200/ 170/ 150 rpm
.
.
.
.
.
AO *D36/ 45/ 54/ 60LATT

1-7. LOUVER CONTROL
01-09
1-1. VERTICAL LOUVER CONTROL
Each time the button is pressed, the air direction range will change as follows:
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.
COOLING / DRY / FAN mode Horizontal flow
HEATING mode Downward flow
(Function Range)
(Fig 11 : Air Direction Range)
(Operation Range)
1-2. SWING OPERATION
When the swing signal is received from the remote controller, the vertical louver starts to swing.
The range of swing depends on the set airflow direction.
When the indoor fan is either at S-LOW or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
During COOLING / HEATING / DRY / FAN mode :
During AUTO mode operation, for the first minute after the start-up, air-flow will be horizontal
; the air direction cannot be adjusted during this period.
The type of operation
COOLING / DRY
Range of swing
to
HEATING to
FAN( ) to
to
to
FAN( )
to
1. For Floor / Ceiling Type < AB *F18/ 22/ 24LBT >
1
2
3
4
5
6
7
1 2 3 4 5 6 7
1 2 3 4 5 6 7
1
7
7
5
41
1 4
37
14
3 7
1
During HEATING start-up and DEFROST operation, to prevent the thing that
the cool air blows to the person directly, the louver is set to .
7
5
During COOLING and DRY mode operation, if the Vertical Louvers are left in the to ,
4
4
they will automatically return to position .
<Operation continues for 30 minutes>
<Operation stops within 30 minutes>
they will automatically return to position in next COOLING start-up.
For the dew condensation prevention of the Vertical Louvers.

01-10
1-3. HORIZONTAL LOUVER CONTROL
Each time the button is pressed, the air direction range will change as follows:
(Function Range)
(Fig 12 : Air Direction Range)
1-4. SWING OPERATION
When the swing signal is received from the remote controller, the horizontal louver starts to swing.
The range of swing depends on the set airflow direction.
When the indoor fan is either at S-LOW or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
The type of operation
COOLING / HEATING / DRY / FAN
Range of swing
RIGHT/LEFT air direction louvers
Use the air direction adjustments within the ranges shown above.
The remote control unit's display does not change.
(All range)
12345
1 2 3 4 5
to
1 5

01-11
2-1. VERTICAL LOUVER CONTROL
Each time the button is pressed, the air direction range will change as follows:
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.
COOLING / DRY / FAN mode Horizontal flow
HEATING mode Downward flow
(Function Range)
(Fig 13 : Air Direction Range)
(Operation Range)
2-2. SWING OPERATION
When the swing signal is received from the remote controller, the vertical louver starts to swing.
The range of swing depends on the set airflow direction.
When the indoor fan is either at S-LOW or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
During COOLING / HEATING / DRY / FAN mode :
During AUTO mode operation, for the first minute after start-up, air -flow will be horizontal
; the air direction cannot be adjusted during this period.
The type of operation
COOLING / DRY / FAN
Range of swing
to
HEATING to
2. For Ceiling Type < AB *A36/ 45/ 54LCT >
1 2 3 4 5
1 2 3 4 5
5
1
1
5
4
3
5
4
1
During Heating start-up and Defrost operation, to prevent the thing that
the cool air blows to the person directly, the louver is set to .
During COOLING and DRY operation, if the Vertical Louvers are left in the to ,
3
3
5
4
they will automatically return to position .
<Operation continues for 30 minutes>
If the operation stops within 30 minutes after the Vertical louvers are set from 4 to 5,
they are return to in next cooling beginning operation.
Bcause to prevent the dew condensation of the louver.
<Operation stops within 30 minutes>
they will automatically return to position in next COOLING start-up.
For the dew condensation prevention of the Vertical Louvers.

01-12
2-3. HORIZONTAL LOUVER CONTROL
Each time the button is pressed, the air direction range will change as follows:
(Function Range)
(Fig 14 : Air Direction Range)
2-4. SWING OPERATION
When the swing signal is received from the remote controller, the horizontal louver starts to swing.
The range of swing depends on the set airflow direction.
When the indoor fan is either at S-LOW or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
The type of operation
COOLING / HEATING / DRY / FAN
Range of swing
to
Use the air direction adjustments within the ranges shown above.
The remote control unit's display does not change.
(All range)
1 2 3 4 5
1 5

01-13
3-1. VERTICAL LOUVER CONTROL
Each time the button is pressed, the air direction range will change as follows:
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
(Function Range)
(Fig 15 : Air Direction Range)
(Operation Range)
During COOLING / HEATING / DRY / FAN mode :
selected.
COOLING / DRY / FAN mode Horizontal flow
HEATING mode Downward flow
3-2. SWING OPERATION
When the swing signal is received from the remote controller, the vertical louver starts to swing.
The range of swing depends on the set airflow direction.
When the indoor fan is either at S-LOW or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
During AUTO mode operation, for the first minute after start-up, air-flow will be horizontal
; the air direction cannot be adjusted during this period.
The type of operation
COOLING / HEATING / DRY / FAN
Range of swing
to
3. For Compact Cassette Type < AU *F18/ 22/ 24LBL >
1 2 3 4
1 2 3 4
1
1 4
4
During HEATING operation, to prevent the thing that the cool air blows to the person directly,
the louver is set to .
1
1
2
3
4

01-14
4-1. VERTICAL LOUVER CONTROL
Each time the button is pressed, the air direction range will change as follows:
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
(Function Range)
(Fig 16 : Air Direction Range)
(Operation Range)
During COOLING / HEATING / DRY / FAN mode :
selected.
COOLING / DRY / FAN mode Horizontal flow
HEATING mode Downward flow
4-2. SWING OPERATION
When the swing signal is received from the remote controller, the vertical louver starts to swing.
The range of swing depends on the set airflow direction.
When the indoor fan is either at S-LOW or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
During AUTO mode operation, for the first minute after start-up, air-flow will be horizontal
; the air direction cannot be adjusted during this period.
The type of operation
COOLING / HEATING / DRY / FAN
Range of swing
to
4. For Cassette Type < AU *A36/ 45/ 54LCLU >
1 2 3 4
1 2 3 4
1
1 4
4
During HEATING operation, to prevent the thing that the cool air blows to the person directly,
the louver is set to .
1

1-8. COMPRESSOR CONTROL
1. OPERATION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in Table 22.
(Table 22 : Compressor Operation Frequency Range)
2. OPERATION FREQUENCY CONTROL AT START UP (Common in all models)
The compressor frequency soon after the start-up is controlled as shown in Figure 17.
(Fig 17 : Compressor Control at Start-up)
56Hz
180sec 270sec
80Hz
01-15
90sec
AO *D36LATT
AO *D45LATT
AO *D54LATT
AO *D60LATT
30Hz
36Hz
36Hz
36Hz
110Hz
160Hz
160Hz
160Hz
< Normal start-up >
108Hz
140Hz
360sec
50Hz
480sec270sec
80Hz
30sec
108Hz
140Hz
650sec
32Hz
68Hz
620sec560sec
< Immediate start-up after power-on>
Upper Limit
Frequency
*Compressor is 4 pole type.
Therefore, [Hz] is described by the twice the value of [rps]
Upper Limit
Frequency
Min Max
COOLING
36Hz
36Hz
36Hz
36Hz
160Hz
170Hz
170Hz
170Hz
Min Max
HEATING
62Hz
58Hz
70Hz
76Hz
DRY
DC
indoor unit AC indoor unit
42Hz
46Hz
78Hz
82Hz

01-16
1-9. TIMER OPERATION CONTROL
AR-SY1
1. ON / OFF TIMER
OFF timer : When the clock reaches the set time, the air conditioner will be turned off.
Operation mode
Stop mode
Set time of timer
ON timer : When the clock reaches the set time, the air conditioner will be turned on.
Operation mode
Stop mode
Set time of timer
2. PROGRAM TIMER
ON / TIMER
OFF / TIMER
PROGRAM TIMER
SLEEP TIMER
The program timer allows the OFF timer and ON timer to be used in combination one time.
Operation mode
Operation will start from the timer setting (either OFF timer or ON timer)
whichever is closest to the clock's current timer setting.
The order of operations is indicated by the arrow in the remote control unit's display.
SLEEP timer operation cannot be combined with ON timer operation.
Stop mode Stop mode Stop mode
Operation mode Operation mode
Set time Set time Set time Set time
1-9-1 Wireless Remote Controller