Fujitsu AB*A30LBT, AB*A36LBT, AO*A30LBTL, AO*A36LBT, AO*A30LBTL Series Service Instruction
...
SPLIT TYPE
ROOM AIR CONDITIONER
Large Ceiling type
Models Indoor unit Outdoor unit
INVERTER
SERVICE
INSTRUCTION
R410A
AB*A30LBT
AB*A36LBT
AO*A30LBTL
AO*A36LBTL
CONTENTS
1. SPECIFICATIONS
SPECIFICATIONS.......................................................................................................... 01-01
2. DIMENSIONS
DIMENSIONS.................................................................................................................. 02-01
3. REFRIGERANT SYSTEM DIAGRAM
REFRIGERANT CIRCUIT............................................................................................... 03-01
4. CIRCUIT DIAGRAM
CIRCUIT DIAGRAM........................................................................................................ 04-01
5. DESCRIPTION OF EACH CONTROL OPERATION
5-1-1 COOLING CAPACITY CONTROL......................................................................
5-1 COOLING OPERATION............................................................................................
5-4 AUTO CHANGEOVER OPERATION........................................................................
5-5 INDOOR FAN CONTROL.........................................................................................
5-6 OUTDOOR FAN CONTROL......................................................................................
05-01
05-01
5-2-1 HEATING CAPACITY CONTROL......................................................................
5-2 HEATING OPERATION.............................................................................................
05-02
05-02
5-3-1 INDOOR UNIT CONTROL.................................................................................
5-3 DRY OPERATION......................................................................................................
05-03
05-03
05-04
05-05
05-07
5-7 LOUVER CONTROL.................................................................................................
05-08
5-9 TIMER OPERATION CONTROL...............................................................................
05-10
5-10 ELECTRONIC EXPANSION VALVE CONTROL....................................................
05-11
5-11 TEST OPERATION CONTROL...............................................................................
05-13
5-12 PREVENT TO START FOR 3 MINUTES (3 MINUTES ST)....................................
05-13
5-13 4-WAY VALVE EXTENSION SELECT....................................................................
05-13
5-14 AUTO RESTART.....................................................................................................
05-14
5-15 PUMP DOWN (For AB*30/ 36 LBT)........................................................................
05-14
5-17 COMPRESSOR PREHEATING...............................................................................
05-14
05-15
05-14
5-20 ECONOMY OPERATION.........................................................................................
05-18
5-21 VARIOUS PROTECTIONS......................................................................................
05-19
05-20
5-22 COMPRESSOR STOP CONTROL..........................................................................
5-18 DEFROST OPERATION CONTROL.......................................................................
05-15
5-19 OFF DEFROST OPERATION CONTROL...............................................................
05-17
5-16 MANUAL AUTO OPERATION (When using the Wireless RC) ...........................
5-8 COMPRESSOR CONTROL......................................................................................
6. REFRIGERANT CAUTION -R410A-
6-1 R410A TOOLS............................................................................................................ 06-01
6-2 PRECAUTION FOR INSTALLATION.........................................................................
06-02
6-3 PRECAUTION FOR SERVICING...............................................................................
06-04
6-4 NEW REFRIGERANT R410A.....................................................................................
06-05
6-5 DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS.......
06-08
8. APPENDING DATA
9. INSTALLATION MANUAL
8-1 CAPACITY TABLE..................................................................................................... 08-01
8-2 OPERATION RANGE.................................................................................................
08-03
8-3 ELECTRIC CHARACTERISTICS...............................................................................
08-04
8-4 SAFETY DEVICE........................................................................................................
08-05
8-5 FUNCTION SETTING.................................................................................................
08-06
08-11
7-1-1 INDOOR UNIT DISPLAY....................................................................................
7-1-2 WIRED REMOTE CONTROLLER DISPLAY......................................................
7-1 ERROR DISPLAY......................................................................................................
7. TROUBLE SHOOTING
7-2 TROUBLE SHOOTING WITH ERROR CODE..........................................................
7-3 TROUBLE SHOOTING WITH NO ERROR CODE....................................................
7-4 SERVICE PARTS INFORMATION............................................................................
07-01
07-01
8-5-1 INDOOR UNIT....................................................................................................
08-06
8-5-3 Procedures to change the Function Setting for wireless RC............................. 08-08
08-07
8-5-5 WIRED REMOTE CONTROLLER......................................................................
08-10
07-03
07-31
07-05
07-36
8-5-2 Switching Remote Control Unit Signal Codes.....................................................
8-5-4 Procedures to change the Function Setting for wired RC...............................
7-1-3 OUTDOOR UNIT DISPLAY................................................................................ 07-04
1 . SPECIFICATIONS
R410A
Large Ceiling type
INVERTER
01-01
AB A30LBT AB A36LBT
Cooling A A
Heating A A
kW 8.50 9.40
BTU/h 29000 32100
kW 2.80 - 10.00 2.80 - 11.20
BTU/h 9500 - 34100 9500 - 38200
kW 10.00 11.20
BTU/h 34100 38200
kW 2.70 - 11.20 2.70 - 12.70
BTU/h 9200 - 38200 9200 - 43300
2.65 2.93
3.88 4.56
2.77 3.02
3.88 4.56
11.6 12.8
17.0 20.0
12.2 13.2
17.0 20.0
EER 3.21 3.21
COP 3.61 3.71
l/h (pints/h) 2.5(5.3) 3.0 (6.3)
High 1660 1900
Med 1500 1500
Low 1200 1200
Quiet 1000 1000
High 1660 1900
Med 1500 1500
Low 1200 1200
Quiet 1000 1000
Type × Q'ty
Motor output W 120 120
High 45 47
Med 43 43
Low 37 37
Quiet 32 32
High 45 47
Med 43 43
Low 37 37
Quiet 32 32
Dimensions (H × W × D) 252 × 1350 × 39.9 252 × 1350 × 39.9
Fin pitch 1.45 1.45
Rows x Stages 3 × 12 3 × 12
Pipe type
Fin type
Material
Colour
Net
Gross
Net 46 ( 101 ) 46 ( 101 )
Gross 58 ( 128 ) 58 ( 128 )
Liquid
9.52 ( 3 / 8 in.) 9.52 ( 3 / 8 in.)
Gas
15.88 ( 5 / 8 in.) 15.88 ( 5 / 8 in.)
Method Flare Flare
°C 18 to 32 18 to 32
%RH 80 or less 80 or less
Heating °C 16 to 30 16 to 30
mm
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Pipe length : 5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
The maximum current and the maximum input value are the maximum value when operated within the operation range(temperature)
European energy label
ABS
Outer diameter : 26.0 / Inner diameter : 21.5
Airflow
rate
Cooling
Heating
m3/h
Cooling
White
240 × 1660 × 700
318 × 1800 × 790
Wireless
Sirocco × 4
Copper
Aluminium
ABS
CEILING MODEL
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
Operation range
Cooling
kg(lb.)
Connection pipe
Size
mm
Remote controller type
Drain pipe
Material
Size
Dimensions
( H× W × D )
mm
Weight
Heat exchanger type
Enclosure
mm
Fan
Current
Cooling
A
Heating
Rated
*Max.
Rated
*Max.
kW/kW
kW
Heating
Rated
*Max.
Rated
*Max.
Heating
Sound pressure level
Heating
Rated
Min. - Max.
Rated
Min. - Max.
Heating
Input power
Cooling
dB(A)
Type
Model name
Power source
Available voltage range
Capacity
Cooling
Moisture removal
Cooling
1. SPECIFICATIONS
INDOOR UNIT
AO A30LBTL AO A36LBTL
Power source
Available voltage range
A 15.0 15.0
Cooling 3600 4000
Heating 3800 3800
Type × Q'ty
Motor output W 103 103
Cooling 53 54
Heating 55 55
Dimensions (H × W × D)
798 × 900 × 36.4 798 × 900 × 36.4
Fin pitch 1.30 1.30
Rows x Stages 2 × 38 2 × 38
Pipe type
Fin type
Motor output W
Charge g
Material
Colour
Net
Gross
Net
Gross
Liquid
Gas
Method
Max. length 50(chargeless:20) 50(chargeless:20)
Max. height difference 30 30
Cooling
Heating
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Pipe length : 5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
°C
Operation range
Type
Model name
Fan
Airflow
rate
m3/h
dB(A)
mm
mm
Weight
kg(lb.)
Dimensions
(H × W × D)
Refrigerant oil
Type
Enclosure
Heat exchanger type
Starting current
Compressor
Type × Q'ty
Refrigerant
Type
Sound pressure level
m
Connection pipe
Size
mm
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
Propeller × 1
9.52 ( 3/8 in.)
Copper
Aluminium
Steel sheet
Beige (10YR7.5/1.0NN)
Twin Rotary × 1
1700
R410A
PVE
2100
15.88 ( 5/8 in.)
Flare
-15 to 46
-15 to 24
830 × 900 × 330
62 ( 136 )
70 ( 154 )
970 × 1050 × 445
OUTDOOR UNIT
01-02
2 . DIMENSIONS
R410A
INVERTER
Large Ceiling type
02 - 01
2. DIMENSIONS
Top view
Side view
Rear view
MODEL : AB A 30 / 36 LBT
(Unit : mm)
1 2 3
45
6
30 30
Suspension bolt pitch
1,600
INDOOR UNIT (Top view)
Dimensions
(Space Required
for Installation)
10
155
300
INDOOR UNIT
Suspension bolt
should extend
outward 30 to 75.
1
Refrigerant piping flare connection (Gas)
Refrigerant piping flare connection (Liquid)
Drain piping connection
Knock out hole for fresh air
Knock out hole for refrigerant piping
Hole for lifting bolt (Use M10 screw bolt)
2
3
4
5
6
141
Ø200
114
373
Ø200
02 - 02
2. DIMENSIONS
MODEL : AO A 30 / 36 LBTL
MOUNTING POSITION
(Unit : mm)
When there are obstacles at the
back or front sides.
When there are obstacles at the
back, side(s), and top.
When there are obstacles at the
back, side with the installation of
more than one unit.
603
Air flow
900
650
830
370
99
196
21
9
77
31 330
400
170
147
12
600 m
m
or
mo
re
250
m
m
or more
250
m
m
or more
300
mm
or
m
o
re
600 mm or more
100
m
m
or more
30
0
m
m
or
m
o
r
e
1
0
0
mm
o
r mo
re
25
0
mm
or
more
(
S
ervic
e s
pace)
Top view
Front view
Side view
Bottom view
3 . REFRIGERANT SYSTEM DIAGRAM
R410A
INVERTER
Large Ceiling type
03 - 01
3. REFRIGERANT CIRCUIT
MODEL : AO A 30 / 36 LBTL
4 . CIRCUIT DIAGRAM
R410A
INVERTER
Large Ceiling type
04 - 01
4. CIRCUIT DIAGRAMS
MODEL : AB A30 / 36 LBT
INDOOR UNIT
04 - 02
MODEL : AO A30 /36 LBTL
OUTDOOR UNIT
5 . DESCRIPTION OF EACH
CONTROL OPERATION
R410A
Large Ceiling type
INVERTER
5-1. COOLING OPERATION
5-1-1 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*A30LBTL
23Hz 94Hz
AO*A36LBTL
Outdoor air
temperature
( Table 1 : Compressor Frequency Range )
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
05-01
5. DESCRIPTION OF EACH CONTROL OPERATION
AO*A30LBTL
A zone
B zone
C zone
D zone
E zone
F zone
Me Lo Qu
Fan speed mode
Hi
A zone
36°C
34°C
B zone
32°C
30°C
C zone
21°C
19°C
D zone
12°C
10°C
E zone
2°C
0°C
F zone
When the room
temperature drops
When the room
temperature rises
94Hz 76Hz 64Hz 51Hz
94Hz 76Hz 64Hz 51Hz
85Hz 64Hz 57Hz 51Hz
64Hz 57Hz 51Hz 45Hz
AO*A36LBTL
5-2. HEATING OPERATION
5-2-1 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 Table2.
( Table 2 : Compressor Frequency Range )
( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )
05-02
minimum
frequency
maximum
frequency
AO*A30LBTL
23Hz
120Hz
AO*A36LBTL
AO*A30LBTL
C zone
19°C
C zone
B zone 120Hz 88Hz 76Hz 67Hz
17°C
A zone
14°C
B zone
12°C
A zone
Lo Qu
Fan speed mode
Hi Me
Outdoor air
temperature
When the room
temperature drops
When the room
temperature rises
AO*A36LBTL
5-3. DRY OPERATION
5-3-1 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.
( Table 3 : Compressor frequency )
05-03
Operating frequency
[ AB*A30LBTL ]
51Hz
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
S-Lo
OFF
( Fig.4 : Indoor Fan Control )
10 30 60 180 60 180 60 10 30
(sec)
[ AB*A36LBTL ]
X zone
Y zone
Temperature zone
0Hz
X zone
Y zone
[ AB*A30/36LBT : Dry air flow 650rpm, S-Lo 250rpm ]
5-4. 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 swiched 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- Lo)
After 1 minute, depends on the room temperature and outdoor unit's operarion mode,
the operation mode is selected in accordance with the below.
( Table 4 : Operation mode selection table )
1
05-04
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
Heating
C zone
Monitoring
Monitoring
=
=
( Fig.5 : Operation mode selection based on Outdoor Temperature )
Cooling
(Automatic Dry)
[ For AB*A30/ 36LBT ]
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 23Hz 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
3
1
4
1
Room
temperature
Compressor :ON
Compressor :OFF
Ts - 0.5°C
Ts - 1.5°C
Outdoor
temperature
5-5. INDOOR FAN CONTROL
1. Fan speed
( Table 5 : Indoor Fan Speed )
2. FAN OPERATION
The airflow can be switched in 5 steps such as AUTO, QU, LOW, MED, HIGH, while the indoor
fan only runs.
When [AUTO] is selected, the indoor fan motor runs continuously [MED] mode.
AB*A30LBT
Operation mode Air flow mode Speed (rpm)
Hi 1000
910
750
650
Me
Lo
Cooling
Qu
Hi 1000
1000
910
750
Me+
Me
Heating
Lo
AB*A36LBT
Operation mode Air flow mode Speed (rpm)
Hi 1100
910
750
650
Me
Lo
Cooling
Qu
Hi 1100
1100
910
750
Me+
Me
Heating
Lo
650
Qu
650
Qu
Auto
500
Dry
S-Lo 250
Monitoring
Auto
500
Dry
S-Lo 250
Monitoring
3. COOLING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Figure 5.
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 6.
( Fig.6 : 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 mode
MED mode
LOW mode
650
Cool Air Prevention Cool Air Prevention
650
05-05
4. HEATING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Figure 7.
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.
5. COOL AIR PREVENTION CONTROL (Heating mode)
6. DRY OPERATION
Refer to the Figure 4.
During the dry mode operation, the fan speed setting can not be changed.
05-06
42°C
30°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 8,
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 [S-Lo] mode.
( Fig.7 : Airflow change - over ( Heating : AUTO ) )
( Fig.8 : Cool Air Prevention Control )
< [Hi] setting >
Hi
Me+
Lo
Cool air
prevention
39°C
37°C
37°C
32°C
24°C
39°C
32°C
Indoor heat exchanger
temperature
Indoor heat exchanger
temperature
< The other of [Hi] setting >
S-Lo
Lo (Qu)
Cool air
prevention
37°C
30°C
34°C
24°C
Setting
FAN mode
S-Lo
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 mode
MED mode
HIGH mode
[ AB*A30/36LBT : Cool air prevention 500rpm, S-Lo 250rpm ]
5-6. OUTDOOR FAN CONTROL
1. Outdoor Fan Motor
1-1. For AO*A30/ 36LBTL ( AB*A30 / 36LBT , AR*A30 / 36LBTU )
Following table shows the fan speed of the outdoor unit.
Table 6 : Fan speed of the outdoor unit
Table 7 : Fan speed when starting up outdoor fan
Outdoor temperature [Ta]
The outdoor fan speed is changed in the range of the speed shown in the above table,
based on the frequency of the compressor.
(When the compressor frequency increases, the outdoor fan speed is also changed to
higher speed. If the compressor frequency decreases, the outdoor fan speed is changed
to the lower speed as well.)
After starting up the outdoor fan, it operates with the following speed for initial 20 seconds.
After operating the defrost control function on heating mode except economy operation,
its speed becomes 900rpm
regardless of the compressor frequency.
However, it returns to the normal speed control when the defrosting operation does not function
for 240 minutes after releasing the defrost operation or when the outdoor temperature sensor
detection value becomes higher than 5°C.
Cooling
Dry
900/ 850/ 780/ 700/ 500 rpm
500 rpm
AO*A30LBTL
Outdoor temperature zone
Fan speed
500 rpm
200 rpm
AO*A30LBTL
AO*A36LBTL
Heating
900/ 780/ 700/ 550/ 450 rpm
340/ 320/ 250/ rpm
2°C > Ta
260/ 250/ rpm
260/ 250/ rpm
12°C > Ta > 2°C
Ta > 12°C
12°C
2°C
10°C
0°C
D zone ( Normal )
F zone
G zone
Outdoor temperature zone
COOL D zone (Normal) / HEATING
COOL F,G zone
05-07
340/ 320/ 250/ rpm
AO*A36LBTL
AO*A30LBTL
850/ 780/ 700/ 500 rpm
500 rpm
340/ 320/ 250/ rpm
2°C > Ta
260/ 250/ rpm
260/ 250/ rpm
12°C > Ta > 2°C
Ta > 12°C
AO*A36LBTL
340/ 320/ 250/ rpm
5-7. LOUVER CONTROL
05-08
1. VERTICAL LOUVER CONTROL (AB*A30 / 36LBT)
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.9 : Air Direction Range)
(Operation Range)
2. SWING OPERATION (AB*A30 / 36LBT)
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-Lo or Stop mode, the swinging operation is interrupted
and the louver stops at the memorized position.
( Stop mode means Operation stop.)
During Cooling/Dry mode/Fan mode :
During Heating mode :
During AUTO mode operation, for the first minute after beginning operation, 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
5
5
5
3
5
5
05-09
3. HORIZONTAL LOUVER CONTROL (AB*A30 / 36LBT)
Each time the button is pressed, the air direction range will change as follows:
(Function Range)
(Fig.10 : Air Direction Range)
4. SWING OPERATION (AB*A30 / 36LBT)
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-Lo 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/Dry
Range of swing
to
Heating
to
5
FAN
to
5
Use the air direction adjustments within the ranges shown above.
The remote control unit's display does not change.
5
5
(All range)
(All range)
(All range)
5-8. COMPRESSOR CONTROL
1. OPERATION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in Table 9.
Cooling Heating
Min Max Min Max
Dry
(Table 9 : Compressor Operation Frequency Range)
2. OPERATION FREQUENCY CONTROL AT START UP
2-1. For AB*A30/ 36LBT
The compressor frequency soon after the start-up is controlled as shown in Figure 13.
(Fig.13 : Compressor Control at Start-up)
40Hz
60sec 100sec
59Hz
05-10
AB*A30LBT
23Hz
94Hz
23Hz
120Hz
51Hz
AB*A36LBT
46sec
05-11
5-9. 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
5-9-1 Wireless Remote Controller
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
05-12
3. SLEEP TIMER
If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically.
If the operation mode or the set temperature is change after the sleep timer is set, the operation is
continued according to the changed setting of the sleep timer from that time ON.
Set temperature rises
( Ts : Set temperature )
Stop of operation
Set temperature lowers
( Ts : Set temperature )
Ts
Stop of operation
In the cooling operation mode
When the sleep timer is set, the setting temperature is increased 1 degC.
It increases the setting temperature another 1 degC after 1 hour.
After that, the setting temperature is not changed and the operation is stopped at the time
of timer setting.
Ts
+1degC
+2degC
-2degC
-1degC
-4degC
-3degC
Set
60min
In the heating operation mode
When the sleep timer is set, the setting temperature is decreased 1 degC.
It decreases the setting temperature another 1 degC every 30 minutes.
Upon lowering 4 degC, the setting temperature is not changed and the operation stops
at the time of timer setting.
Set
30min
60min
90min
5-10. ELECTRONIC EXPANSION VALVE CONTROL
5-11. TEST OPERATION CONTROL
Under the condition where the air conditioner stops, press the MASTER CONTROL button and
the FAN CONTROL button simultaneously for 2 seconds or more, and the test operation control
mode will appear.
During test running, " " will display on the remote controller display.
Set the test operation mode, and the compressor will continue to run regardless of whatever
the room temperature sensor detects.
The test operation mode is released if 60 minutes have passed after setting up the test operation.
The compressor won't enter operation status for 3 minutes after the compressor is stopped,
even if any operation is given.
5-12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
05-13
With Wired Remote Controller
The most proper opening of the electronic expansion valve is calculated and controlled under the
present operating condition based on the following values.
The compressor frequency, the temperatures detected by the discharge temperature sensor, the
indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature
sensor.
Pulse range
53 480 pulse
(1) Pulse range of EEV
(2) The EEV is set up at 480 pulses when the compressor is stopped.
(3) Intialization (Input of 528 pulses toward closing direction) is operated under
the following condition.
* When the power is turned on.
* 4 hours has passed since the last initialization, and 3 minutes has passed after
the compressor stop.
(If 12 hours has passed since the last initialization, the compressor is compulsorily stopped.)
AB*A30LBT
AB*A36LBT
Cooling/ Dry
Heating
Operation
Under the condition where the air conditioner runs, press the TEST RUN button, and
the test operation control mode will appear.
During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously.
Set the test operation mode, and the compressor will continue to run regardless of whether the room
temperature sensor detects.
The test operation mode is released if 60 minutes have passed after setting up the test operation.
With Wireless Remote Controller
40 480 pulse
At the time when the air conditioner is switched from the cooling mode to heating mode,
the compressor is stopped, and the 4-way valve is switched in 3 minutes later
after the compressor stopped.
When the power was interrupted by a power failure, etc. during operation, the operation contents
at that time are memorized and when power is recovered, operation is automatically resumed with
the memorized operation contents.
When the power is interrupted and recovered during timer operation, timer operation is canceled,
but only setting time is memorized.
[Operation contents memorized when the power is interrupted]
Operation mode
Set temperature
Set air flow
Timer mode and timer time
Thermistor detected position (When using the Wired Remote Controller)
5-13. 4-WAY VALVE EXTENSION SELECT
5-14. AUTO RESTART
05-14
5-15. PUMP DOWN ( For AB*A30/ 36LBT )
When the product is stopped:
1. Press the PUMP DOWN switch (SW2) on the outdoor unit.
(The LED on the outdoor unit circuit board starts lighting.
2. The pump down operation (cooling operation) begins right away.
After operation starts, close the 3-way valve (liquid).
3. After 2-3minutes, operation stops. Close the 3-way valve (gas) within 1minute after operations stops.
4. The LED will go out 3minutes after it stops. Disconnect the power supply after confirming that
the LED has gone out.
When the product is operating:
1. Press the PUMP DOWN switch (SW2) on the outdoor unit. The LED on the outdoor unit circuit board starts
flashing, and operation stops.
At this point, recovery has not been completed, so do not close the 3-way valves (liquid and gas).
2. The pump down operation (cooling operation) begins after 3minutes.
Close the 3-way valve (liquid) after operation starts.
3. After 2-3minutes, operation stops. Close the 3-way valve (gas) within 1minute after operations stops.
4. The LED will go out 3minutes after it stops. Disconnect the power supply after confirming that
the LED has gone out.
Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit.
5-16. MANUAL AUTO OPERATION (When using the Wireless RC)
If MANUAL AUTO Button is set, the operation is controlled as shown in Table 10.
If the remote control is lost or battery power dissipated, this function will work without the remote
control.
OPERATION MODE
Auto changeover
Auto
Continuous
(No timer setting available)
24°C
(Table 10)
SETTING TEMP.
FAN CONT. MODE
TIMER MODE
05-15
2. CONDITION OF THE DEFROST OPERATION COMPLETION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than +13°C or
Compressor operation time has passed 15 minutes.
5-18. DEFROST OPERATION CONTROL
1. CONDITION OF STARTING THE DEFROST OPERATION
The defrost operation starts when the outdoor heat exchanger temperature sensor detects
the temperature lower than the values shown in Table 12.
(Table 12 : Condition of starting Defrost Operation)
1st time defrosting after starting operation
Less than 17 min.
17 to 62 min.
62 min. to 4 hours
After 4 hours
Does not operate
- 9°C
- 5°C
- 3°C
Compressor integrating
operation time
Compressor contiguous
operation time
Defrost operation is released when the conditions become as shown in Table 13.
(Table 13 : Defrost Release Condition)
Operation
temperature
Below 10 min.
Above 10 min.
Less than 35 min.
35 min. to 4 hours
After 4 hours
Does not operate
- 6°C
- 3°C
Compressor integrating
operation time
Compressor contiguous
operation time
Operation
temperature
Below 10 min.
Above 10 min.
Defrosting after 2nd time upon starting operation
5-17. COMPRESSOR PREHEATING
When the outdoor heat exchanger temperature is lower than 5°C and the heating operation
has been stopped for 30 minutes, power is applied to the compressor and the compressor is heated.
(By heating the compressor, warm air is quickly discharged when operation is started.)
When operation was started, and when the outdoor temperature rises to 7°C or greater,
preheating is ended.
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