Fujitsu AO * V09LAC Series Original operating manual

SPLIT TYPE
ROOM AIR CONDITIONER
FLOOR type
Models Indoor unit Outdoor unit
AG * V09LAC
AG * V12LAC
AG * V14LAC
AO * V09LAC
AO * V12LAC
AO * V14LAC
INVERTER
SERVICE
INSTRUCTION
R410A

CONTENTS
1. SPECIFICATION
AG*V09/ 12LAC, AO*V09/ 12LAC...................................................................................
2. DIMENSIONS
AG*V09/ 12/ 14LAC, AO*V09/ 12/ 14LAC.......................................................................
AG*V14LAC, AO*V14LAC...............................................................................................
3. REFRIGERANT SYSTEM DIAGRAM
AG*V09/ 12/ 14LAC, AO*V09/ 12/ 14LAC.......................................................................
4. CIRCUIT DIAGRAM
AG*V09/ 12LAC, AO*V09/ 12LAC...................................................................................
AG*V14LAC, AO*V14LAC...............................................................................................
5. DESCRIPTION OF EACH CONTROL OPERATION
1. COOLING OPERATION..............................................................................................
3. DRY OPERATION......................................................................................................
2. HEATING OPERATION..............................................................................................
5. INDOOR FAN CONTROL...........................................................................................
4. AUTO CHANGEOVER OPERATION.........................................................................
7. LOUVER CONTROL...................................................................................................
6. OUTDOOR FAN CONTROL.......................................................................................
9. TIMER OPERATION CONTROL................................................................................
8. COMPRESSOR CONTROL........................................................................................
11. TEST OPERATION CONTROL..................................................................................
10. ELECTRONIC EXPANSION VALVE CONTROL........................................................
13. FOUR-WAY VALVE EXTENSION SELECT...............................................................
12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )................................
15. MANUAL AUTO OPERATION ( Indoor unit body operation ).....................................
14. AUTO RESTART........................................................................................................
16. FORCED COOLING OPERATION............................................................................
18. COIL DRY OPEARTION CONTROL..........................................................................
17. COMPRESSOR PREHEATING..................................................................................
19. DEFROST OPERATION CONTROL..........................................................................
21. AIR OUTLET SELECTION (DAMPER CONTROL)....................................................
20. OFF DEFROST OPERATION CONTROL..................................................................
01-01
02-01
02-02
03-01
04-01
04-02
05-01
05-02
05-03
05-04
05-05
05-07
05-08
05-09
05-10
05-12
05-12
05-12
05-12
05-13
05-13
05-13
05-13
05-14
05-16
05-17
22. 10°C HEAT OPERATION........................................................................................... 05-18
23. VARIOUS PROTECTIONS......................................................................................... 05-19
05-12

6. REFRIGERANT CAUTION -R410A-
1. R410A TOOLS............................................................................................................
3. PRECAUTION FOR SERVICING...............................................................................
2. PRECAUTION FOR INSTALLATION.........................................................................
5. DEFFERENCE FROM CONVENTIONAL MODEL(R22) AND PRECAUTIONS........
4. NEW REFRIGERANT R410A.....................................................................................
7. TROUBLE SHOOTING
1. WHEN THE UNIT DOES NOT OPERATE AT ALL....................................................
2. SELF DIAGNOSIS FUNCTION..................................................................................
1. DISASSEMBLY ILLUSTRATION & PARTS LIST......................................................
2. DISASSEMBLY PROCESS ......................................................................................
8. APPENDING DATA
1. JUMPER SETTING OF INDOOR UNIT AND OUTDOOR UNIT................................
3. THERMISTOR RESISTANCE VALUES.....................................................................
2. OUTDOOR UNIT PRESSURE VALUE AND TOTAL ELECTRIC
CURRENT CURVE...................................................................................................
9. REPLACEMENT PARTS
10. INSTALLATION MANUAL
3. SELF-DIAGNOSIS FUNCTION AND CHECKING POINTS.......................................
4. SERIAL SIGNAL DIAGNOSIS....................................................................................
5. IPM PROTECTION.....................................................................................................
6. TROUBLE SHOOTING OF REFRIGERANT CYCLE.................................................
06-01
06-02
06-04
06-05
06-08
07-01
07-02
07-03
07-08
07-09
08-01
08-02
08-06
09-01
09-13
07-10

1 . SPECIFICATIONS
R410A
FLOOR type
INVERTER

SPECIFICATIONS
INDOOR UNIT H x W x D (mm)
H x W x D (mm)
600 x 740 x 200
OUTDOOR UNIT 540 x 790 x 290 578 x 790 x 300
DIMENSIONS
INDOOR UNIT GROSS / NET(kg)
GROSS / NET(kg)
17 / 14
OUTDOOR UNIT 44 / 4040 / 36
WEIGHT
TYPE COOL & HEAT INVERTER
INDOOR UNIT
OUTDOOR UNIT
AG*V09LAC
AO*V09LAC
AG*V12LAC
AO*V12LAC
AG*V14LAC
AO*V14LAC
COOLING CAPACITY (kW) 3.5 (0.9~4.0)
HEATING CAPACITY (kW) 4.5 (0.9~6.6)
4.2 (0.9~5.0)
5.2 (0.9~8.0)
POWER SOURCE (V) 230
FREQUENCY (Hz) 50
RUNNING CURRENT COOLING 4.4
(A) HEATING 5.5
INPUT WATTS (kW) COOLING 0.94 (0.25~1.40)
HEATING 1.19 (0.25~2.15)
E.E.R. COOLING 3.72
COP HEATING 3.78
MOISTURE REMOVAL 1.8
AIR CIRCULATION-Hi (m /hr)
3
C:570 H:600
5.2
6.4
1.14(0.25~1.90)
1.44(0.25~2.95)
3.68
3.61
2.1
C:650 H:650C:570 H:600
C:760 H:680
2.6 (0.9~3.5)
3.5 (0.9~5.5)
2.6
3.8
0.53 (0.25~1.35)
0.79 (0.25~2.10)
4.91
4.43
1.3
FAN MOTOR
TYPE Hermetic type, 4 pole, 3 phase, DC inverter motor, Rotary
DISCRIMINATION
REFRIGERANT R410A (g) 1,050 1,1501,050
POWER SOURCE (V) 230
HI-SPEED (UP/ LO)
(r.p.m.)
C:1,190/ 1,000
H:1,240/ 1,040
C:1,000/ 850
H:1,040/ 880
C: 820/ 690
H: 840/ 700
C: 660/ 560
H: 660/ 560
C:760 H:760
C:1,190/ 1,000
H:1,240/ 1,040
C:1,000/ 850
H:1,040/ 880
C: 820/ 690
H: 840/ 700
C: 660/ 560
H: 660/ 560
C:820 H:750
C:1,330/ 1,120
H:1,330/ 1,120
C:1,100/ 930
H:1,100/ 930
C: 890/ 750
H: 860/ 730
C: 660/ 560
H: 660/ 560
INDOOR
UNIT
MED-SPEED (UP/ LO)
LO-SPEED (UP/ LO)
QUIET (UP/ LO)
OUTDOOR UNIT
ELECTRICAL DATA
COMPRESSOR
( /hr)
(kW/kW)
(kW/kW)
01-01
(dB)
(dB)
HI-SPEED
MED-SPEED
INDOOR UNIT
LO-SPEED
QUIET
C:40 H:40
C:47 H:48
C:35 H:35
C:22 H:22
C:29 H:29
C:40 H:40
C:48 H:49
C:35 H:35
C:22 H:22
C:29 H:29
C:44 H:43
C:50 H:50
C:38 H:37
C:22 H:22
C:31 H:29
OUTDOOR UNIT
NOISE LEVEL
20 m
15m chargeless, 20g/m (>15m)
Note : Noise was measured in accordance with JIS standards, Japan.
MAX PIPE LENGTH
ADDITIONAL REFRIGERANT
DA89X1C-20FZ DA130A1F-25F

2 . DIMENSIONS
R410A
FLOOR type
INVERTER

DIMENSIONS
Models : AG*V09LAC / AO*V09LAC
AG*V12LAC / AO*V12LAC
02-01
(unit : mm)
540
740 200
790 56 290
353
17
600

DIMENSIONS
Models : AG*V14LAC / AO*V14LAC
02-02
347
578
48
10
320
508
540
20
300
125
60
790
(unit : mm)
740 200
600

3 . REFRIGERANT SYSTEM DIAGRAM
R410A
FLOOR type
INVERTER

REFRIGERANT SYSTEM DIAGRAM
2-Way
valve
Strainer
Strainer
3-Way
valve
Muffler
Muffler
4-Way valve
Expansion valve
Heat exchanger
( INDOOR )
Heat exchanger
( OUTDOOR )
(4Pass)
Compressor
Cooling
Heating
AG*V12LAC / AO*V12LAC
AG*V14LAC / AO*V14LAC
Models : AG*V09LAC / AO*V09LAC
03-01
(2Pass)

4 . CIRCUIT DIAGRAM
R410A
FLOOR type
INVERTER

CIRCUIT DIAGRAM
Models : AG*V09LAC / AO*V09LAC
AG*V12LAC / AO*V12LAC
04-01
INDOOR UNIT OUTDOOR UNIT

CIRCUIT DIAGRAM
Models : AG*V14LAC / AO*V14LAC
04-02
INDOOR UNIT OUTDOOR UNIT

5 . DESCRIPTION OF EACH
CONTROL OPERATION
R410A
FLOOR type
INVERTER

( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
1. COOLING OPERATION
1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is 2°C higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
minimum
frequency
air flow maximum
frequency
maximum
frequency
Outside air Outside air
temperature temperature
36°C
A zone
34°C
32°C
B zone
30°C
21°C
C zone
19°C
D zone
( Table 1 : Compressor Frequency Range )
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency to Maximum Frequency .
05-01
E zone
F zone
10°C
0°C
12°C
2°C
AG*V09LAC 18Hz
18Hz
18Hz
80Hz 96Hz
70Hz 90Hz
58Hz 90Hz
AG*V12LAC
AG*V14LAC
Hi Me Lo Quiet
A zone
96Hz 61Hz 51Hz 33Hz
96Hz 61Hz 51Hz 33Hz
51Hz 33Hz
B zone
C zone
96Hz 61Hz
Upper&
Lower
air flow
Upper
air flow
D zone
64Hz 42Hz 36Hz 27Hz
E zone
64Hz 42Hz 36Hz 27Hz
F zone
A zone
B zone
C zone
D zone
E zone
F zone 64Hz 42Hz 36Hz 27Hz
96Hz 61Hz 45Hz 33Hz
96Hz 61Hz 45Hz 33Hz
45Hz 33Hz
96Hz 61Hz
64Hz 36Hz 36Hz 27Hz
64Hz 36Hz 36Hz 27Hz
64Hz 36Hz 36Hz 27Hz
* 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.
However, 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 2.5°C lower than a set temperature, the compressor will be
stopped.
Upper & Lower
Upper
Upper & Lower
Upper
AG*V09/ 12LAC
Hi Me Lo Quiet
A zone
90Hz 45Hz 42Hz 30Hz
90Hz 45Hz 42Hz 30Hz
42Hz 30Hz
B zone
C zone
90Hz 45Hz
Upper&
Lower
air flow
Upper
air flow
D zone
58Hz 38Hz 34Hz 24Hz
E zone
58Hz 38Hz 34Hz 24Hz
F zone
A zone
B zone
C zone
D zone
E zone
F zone 58Hz 38Hz 34Hz 24Hz
90Hz 45Hz 34Hz 24Hz
90Hz 45Hz 34Hz 21Hz
34Hz 21Hz
90Hz 45Hz
58Hz 34Hz 30Hz 21Hz
54Hz 34Hz 30Hz 21Hz
54Hz 34Hz 30Hz 21Hz
AG*V14LAC

2. HEATING OPERATION
2-1 HEATING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is lower by 3°C than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is higher 2.5°C than a set temperatire, the compressor will be
stopped.
Outside air
temperature
Outside air
temperature
19°C
C zone
17°C
14°C
B zone
12°C
A zone
AA zone
7°C
5°C
* When the room temperature is between +2°C to -3°C of the setting temperature,
the compressor frequency is controlled within the range shown in Table2.
However, the maximum frequency is limited in the range shown in Figure 2 based on the
fan speed mode and the outdoor temperature.
( Table 2 : Compressor Frequency Range )
( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )
* The room temperature is controlled 2°C higher than the setting temperature for 60 minutes
after starting the operation.
After 60 minutes, it is controlled based on the normal setting temperature.
05-02
minimum
frequency
air flow maximum
frequency
AG*V09LAC 18Hz
18Hz
130Hz
119Hz
AG*V12LAC
AG*V14LAC
Hi Me Lo Quiet
130Hz 96Hz 57Hz 45Hz
130Hz 96Hz 64Hz 51Hz
80Hz 68Hz
130Hz 96Hz
Upper&
Lower
air flow
Upper
air flow
130Hz 96Hz 80Hz 68Hz
130Hz 96Hz 48Hz 33Hz
130Hz 96Hz 64Hz 45Hz
80Hz 51Hz
130Hz 96Hz
130Hz 96Hz 80Hz 68Hz
AA zone
A zone
B zone
C zone
AA zone
A zone
B zone
C zone
Upper & Lower
Upper
Upper & Lower
Upper
AG*V09/ 12LAC
Hi Me Lo Quiet
119Hz 90Hz 54Hz 30Hz
119Hz 90Hz 70Hz 38Hz
70Hz 45Hz
119Hz 90Hz
Upper&
Lower
air flow
Upper
air flow
119Hz 90Hz 70Hz 54Hz
119Hz 90Hz 38Hz 30Hz
119Hz 90Hz 42Hz 38Hz
49Hz 38Hz
119Hz 90Hz
119Hz 90Hz 54Hz 45Hz
AA zone
A zone
B zone
C zone
AA zone
A zone
B zone
C zone
AG*V14LAC

3. DRY OPERATION
3-1 INDOOR UNIT CONTROL
The compressor rotation frequency shall change according to the temperature, set temperature,
and room temperature variation which the room temperature sensor of the indoor unit body has
detected as shown in the Fig 3. However, after the compressor is driven, the outdoor unit shall
run at INITIAL frequency as shown in the Table 3 for a minute.
room
temperature
room
temperature
Ts+1.5°C
Ts+0.5°C
Compressor
ON
OFF
Indoor fan
Dry air flow
S-Lo
OFF
Ts- 0.5°C
Ts- 1.5°C
( Table 3 : Compressor frequency )
( Fig.3 : Compressor Control based on Room Temperature )
( Fig.4 : Indoor Fan Control )
05-03
10 30 60 180 60 180 60 10 30 (SEC)
INITIAL
frequency
AG*V09LAC 56Hz
40Hz
AG*V12LAC
AG*V14LAC
AG*V09LAC
AG*V12LAC
AG*V14LAC
X zone
J zone
Y zone
X zone J zone Y zone
A,B,C 33Hz 25Hz 0Hz
25Hz 0Hz
D,E,F
A,B,C
D,E,F
27Hz
21Hz 18Hz 0Hz
air flow Indoor zone
*Outdoor
zone
Upper
air flow
Upper
air flow
*Refer to Fig.1 for "outdoor zone".

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, DRY 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 upper fan and outdoor fans are operated for 1 minute. After 1 minute,
the room temperature and outside air temperature are sensed and the operation mode is
selected in accordance with the table below.
C zone
32°C
B zone
-10°C
A zone
( Table.4 Operation mode selection table)
Outside air temperature (TO)
Room temperature (TB)
A zone B zone C zone
TB > TS+2°C Monitoring Cooling
(automatic dry)
Cooling
(automatic dry)
TS+2°C TB TS - 2°C Monitoring Monitoring Monitoring
TB TS-2°C Heating Heating Monitoring
.When COOING was selected at , the air conditioner operates as follow:
The same operation as COOLING OPERATION of item 1 above is performed.
When the room temperature has remained at (set temperature -1°C) for 8 minutes, operation is
automatically switched to DRY and the same operation as DRY OPERATION of item 3 above
is performed.
If the room temperature reaches (set temperature +2°C during DRY operation, operation returns to
COOLING operation.
.When HEATING was selected at , the same operation as HEATING OPERATION of item 2
above is performed.
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
<
1
2
31
4
1
( Fig.5 : Outside air temperature zone selection )
05-04

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, QUIET, LOW, MED, HIGH, while the indoor
fan only runs.
When Fan mode is set at (Auto), it operates on (MED) Fan Speed.
05-05
AG*V09/ 12LAC
Operation mode Air flow mode Speed (rpm)
Hi 1240/ 1040 1280/ ---
1040/ 880 1080/ ---
660/ 560 680/ ---
840/ 700 870/ ---
660/ 560 680/ ---
660/ 560 680/ ---
660/ 560 680/ ---
1190/ 1000 1230/ ---
1000/ 850 1030/ ---
820/ 690 850/ ---
---- / ---- 680/ ---
Me
Lo
Heating
Quiet
Hi
Me
Lo
Quiet
Cool air prevention
S-Lo
Dry
Cooling
Fan
Upper& Lower
air flow mode
Upper
air flow mode
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
AG*V14LAC
Operation mode Air flow mode Speed (rpm)
Hi 1330/ 1120 1370/ ---
1100/ 930 1130/ ---
660/ 560 680/ ---
860/ 730 890/ ---
660/ 560 680/ ---
660/ 560 680/ ---
660/ 560 680/ ---
1330/ 1120 1370/ ---
1100/ 930 1130/ ---
890/ 750 890/ ---
---- / ---- 680/ ---
Me
Lo
Heating
Quiet
Hi
Me
Lo
Quiet
Cool air prevention
S-Lo
Dry
Cooling
Fan
Upper& Lower
air flow mode
Upper
air flow mode
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)
(Upper/ Lower)

(3).COOLING OPERATION
Switch the airflow [AUTO], and the (Fig.6)
indoor fan motor will run according airflow change - over ( Cooling:AUTO )
to a room temperature, as shown in When the room
Figure 6. temperature rises
On the other hand, if switched in
[HIGH] [QUIET], the indoor motor +2.5°C
will run at a constant airflow of [COOL]
operation modes QUIET, LOW, MED,
HIGH, as shown in Table 5. +1.5°C
+1°C
LOW mode
When the room
temperature lowers
(Room temperature) D (Setting temperature)
(4).DRY OPERATION
(5).HEATING OPERATION
Switch the airflow [AUTO], and the (Fig.7)
indoor fan motor will run according airflow change - over ( Heating:AUTO)
to a room temperature, as shown in When the room
Figure 7. temperature rises
On the other hand, if switched LOW mode
[HIGH] [QUIET], the indoor motor -1°C
will run at a constant airflow of [HEAT] -1.5°C
operation modes QUIET, LOW, MED,
HIGH, as shown in Table 5. -2°C
-2.5°C
HIGH mode
When the room
temperature lowers
(Room temperature) D (Setting temperature)
(6).COOL AIR PREVENTION CONTROL (Heating mode)
Indoor heat exchanger Indoor heat exchanger
temperature temperature
42°C Hi
39°C Me
37°C
Lo
Cool air prevention
30°C
S-Lo
Refer to the table 4.
Durring the dry mode operation, the fan speed
setting can not be changed.
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.
(Fig.8 : Cool Air Prevention Control)
05-06
34°C
24°C
29°C
31°C
HIGH mode
MED mode
+2°C
MED mode