Fujitsu AB*A30LBT Original operating manual

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 mm
or more
250 mm
or more 250 mm
or more
300 mm
or more
600 mm or more
100 mm
or more
300mm
or more
100mm
or more
250mm or more
(Service space)
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
( Table 4 : Operation mode selection table )
Room
temperature :TR
Room
temperature :TR
Operation
mode
TR > Ts +3.6°F
(2°C)
Ts +3.6°F > TR
(2°C)
=
=
=
Ts +3.6°F > TR > Ts-3.6°F
(2°C) (2°C)
Cooling
Monitoring
Heating
Operation
mode
Room
temperature :TR
Operation
mode
Monitoring
Heating
TR > Ts =Monitoring Ts > TR
Cooling
TR > Ts
Ts > TR
Outdoor unit's
operation mode : Stop
Outdoor unit's
operation mode : Heating
Outdoor unit's
operation mode : Cooling
Ts : Setting temperature
マルチ用
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
31
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