Fujitsu AS G09LLTB-T Series Original operating manual

SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTEDtype
Models
INVERTER
SERVICE
R410A
AS*G09LLTB-T
AS*G12LLTB-T AO*G09LLTB-T
AO*G12LLTB-T
AO*G09LLTB-T
AO*G12LLTB-T
INSTRUCTION
Outdoor unitIndoor unit

CONTENTS
1. 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..........................................................................................
10. TEST OPERATION CONTROL...................................................................................
12. FOUR-WAY VALVE EXTENSION SELECT................................................................
11. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST ).................................
14. MANUAL AUTO OPERATION ( Indoor unit body operation ).....................................
13. AUTO RESTART.........................................................................................................
15. FORCED COOLING OPERATION..............................................................................
16. COMPRESSOR PREHEATING..................................................................................
17. ECONOMY OPERATION............................................................................................
01-01
01-02
01-02
01-03
01-04
01-06
01-07
01-08
01-09
01-11
01-11
01-11
01-11
01-12
01-12
01-12
18. POWERFUL OPERATION.......................................................................................... 01-12
20. OFF DEFROST OPERATION CONTROL...................................................................
19. DEFROST OPERATION CONTROL........................................................................... 01-13
01-15
21. VARIOUS PROTECTIONS.......................................................................................... 01-16
01-11
2. TROUBLE SHOOTING
2-1 ERROR DISPLAY.......................................................................................................
2-2 TROUBLE SHOOTING WITH ERROR CODE............................................................
2-3 TROUBLE SHOOTING WITH NO ERROR CODE.....................................................
02-01
02-02
02-20
2-4 SERVICE PARTS INFORMATION.............................................................................. 02-25

3. APPENDING DATA
3-1 FUNCTION SETTING.................................................................................................
3-1-1 INDOOR UNIT....................................................................................................
3-1-2 Procedures to change the Function Setting for wireless RC..............................
03-01
03-01
03-03
3-2 Thermistor Resistance Values.....................................................................................
3-2-1 INDOOR UNIT....................................................................................................
3-2-2 OUTDOOR UNIT................................................................................................
03-06
03-06
03-06

1 . DESCRIPTION OF EACH
CONTROL OPERATION
R410A
WALL MOUNTED type
INVERTER

( Fig.1 : Outdoor temperature zone )
1. COOLING OPERATION
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.
Minimum
frequency Maximum frequency
AO*G09LLTB-T
AO*G12LLTB-T 18rps
16rps 64rps 87rps
36°C
A zone
34°C 32°C
B zone
30°C 21°C
C zone
19°C
D zone
Indoor fan mode
Me Lo Quiet
A zone 64rps 51rps 42rps 30rps
B zone 64rps 51rps 42rps 30rps
C zone 64rps 51rps 42rps 30rps
AO*G09LLTB-T
D zone 48rps 45rps 39rps 30rps
E zone 48rps 45rps 39rps 30rps
F zone 48rps 45rps 39rps 30rps
( Table 1 : Compressor frequency range )
01-01
E zone
F zone
10°C
0°C
12°C
2°C
* 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 Fig.1 based on the indoor
fan mode and the outdoor temperature.
* If the room temperature is some degrees lower than a set temperature,
the compressor will be stopped.
AO*G12LLTB-T A zone 87rps 55rps 46rps 30rps
B zone 87rps 55rps 46rps 30rps
C zone 87rps 55rps 46rps 30rps
D zone 62rps 52rps 44rps 30rps
E zone 62rps 52rps 44rps 30rps
F zone 62rps 52rps 44rps 30rps
When the outdoor
temperature drops
When the outdoor
temperature rises
( Table 2 : Limit of maximum speed based on outdoor temperature )
Outdoor
temp. zone Hi
* If the room temperature is 2°C higher than a set temperature, the compressor operation
frequency will attain to maximum performance.

2. HEATING OPERATION
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 some degrees higher 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 3.
However, the maximum frequency is limited shown in Table 4 based on the fan mode.
( Table 3 : Compressor frequency range )
01-02
Minimum
frequency Maximum
frequency
AO*G09LLTB-T 18rps
16rpsAO*G12LLTB-T 120rps 109rps
3. DRY OPERATION
The compressor 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 Table 5.
However, after the compressor is driven, the indoor unit shall run at operation frequency of
61rps for 60 seconds.
Ts+0.5°C
Ts -1.5°C
Ts -0.5°C
Ts+1.5°C
( Table 5 : Compressor frequency in Dry mode)
( Fig.2 : Compressor control based on room temperature )
Operating
frequency
30rps
25rps
0rps
09LLTB-T X zone
J zone
Y zone
Operating
frequency
J zone
Y zone
X zone 30rps
23rps
0rps
12LLTB-T
X zone
J zone
Y zone
When the room
temperature drops
When the room
temperature rises
Indoor fan mode
Me Lo Quiet Auto
120rps 120rps 120rps
80rps 68rps
73rpsAO*G12LLTB-T 62rps
AO*G09LLTB-T
( Table 4 : Limit of maximum speed based on outdoor temperature )
Hi
109rps 109rps 109rps

4. AUTO CHANGEOVER OPERATION
01-03
(Fig. 3 : Operation flow chart in Auto changeover)
START
TS: Setting temperature
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
NO
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
YES
YESYES
NO
<Ts- 2°C ?
YES
YES
NO
NO
NO
NO
YES
YES
HEATING OPERATION COOLING OPERATION
>Ts+2°C ?
Room temp.
Room temp.
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.

5. INDOOR FAN CONTROL
The airflow can be switched in 5 steps such as Auto, Quiet, Lo, Me, Hi, while the indoor fan only runs.
When fan mode is set at [Auto], it operates on [Me] fan Speed.
01-04
2. FAN OPERATION
3. COOLING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Figure4.
On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow of [Cool]
operation modes Quiet, Lo, Me, Hi, as shown in Table 6.
( Fig.4 : 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
=
Hi mode
Me mode
Lo mode
1. Fan speed
( Table 6 : Indoor fan speed )
Operation mode Air flow mode Speed (rpm)
Cooling/ Fan
Heating
Dry X zone: 700
J zone: 600 X zone: 700 J zone: 600
AS*G09LLTB-T AS*G12LLTB-T
4. DRY OPERATION
Refer to the Table 6.
During the dry mode operation, the fan speed setting can not be changed.
Hi
Hi
Me+
Me
Me
Lo
Lo
Quiet
* Soft Quiet
Quiet
S-Lo
Cool air prevention
Powerful
Powerful
1420
1360
1290
1120
900
700
600
480
1400
1320
1120
840
700
600
1420
1360
1290
1120
900
700
600
480
1400
1320
1120
860
700
600
*Note, during Economy operation and operation mode is Fan, air flow is 1 step downs.
(Hi > Me, Me > Lo, Lo > Quiet, Quiet > Soft Quiet)

The maximum value of the indoor fan speed is set as shown in Fig.6 based on the detected
temperature by the indoor heat-exchanger sensor on heating mode.
( Fig.6 : Cool air prevension control )
01-05
5. HEATING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig. 5
On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow
of [Heat] operation modes Quiet, Lo, Me, High, as shown in Table 6.
6. COOL AIR PREVENTION CONTROL (Heating mode)
( Fig.5 : 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
Lo mode
Me mode
Me+ mode
42°C
30°C
34°C
When the Indoor heat
exchanger temp. rises When the Indoor heat
exchanger temp. drops When the Indoor heat
exchanger temp. rises When the Indoor heat
exchanger temp. drops
* Hi or setting
Fan mode
* Me+ or setting
Fan mode
* Lo or setting
Fan mode
Cool air
prevention
39°C
37°C
37°C
32°C
28°C
S-Lo
Switch the airflow [Auto] at cooling mode, and the indoor fan motor will run as shown in Fig.7.
7. MOISTURE RETURN PREVENTION CONTROL (Cooling mode& Dry mode)
( Fig.7 : Indoor fan control )
Compressor
ON
OFF
Indoor fan
Setting air flow
Indoor fan
(as shown in Table 7)
S-Lo
OFF
10 30 60 180 60 180 60 10 30
(sec)
( Table 7 : Indoor fan speed )
X zone J zone
AS*G09/12LLTB-T 700rpm 600rpm 700rpm
Dry Cooling
42°C
30°C
34°C
Powerful
Hi
Lo
Cool air
prevention
39°C
37°C
37°C
32°C
28°C
S-Lo
<Normal operation> <Powerful operation>
* Lower speed is selected.
* Lower speed is selected.
Switch the airflow at cooling mode, and the indoor fan motor will run as shown in Fig.7.
It depends on the Function setting "Indoor unit fan control for energy saving."
8. INDOOR UNIT FAN CONTROL FOR ENERGY SAVING (Cooling mode)