Fujitsu AS G09LLCA Series Original operating manual

SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTEDtype
Models Indoor unit Outdoor unit
INVERTER
SERVICE
INSTRUCTION
R410A
AS*G09LLCA
AS*G12LLCA
AO*G09LLC
AO*G12LLC

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
4. REPLACEMENT PARTS
4-1 AO*G09/12LLC...........................................................................................................
4-1-1 PARTS LAYOUT DRAWING..............................................................................
4-1-2 DISASSEMBLY PROCESS................................................................................
04-01
04-01
04-03
4-2 AS*G09/12LLCA.........................................................................................................
4-1-1 PARTS LAYOUT DRAWING..............................................................................
4-1-2 DISASSEMBLY PROCESS................................................................................
04-08
04-08
04-09

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
Maximum
frequency
AO*G09LLCA
AO*G12LLCA 18rps 54rps
80rps
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*G09LLCA
D zone 42rps 33rps 30rps 25rps
E zone 51rps 45rps 39rps 30rps
F zone 51rps 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*G12LLCA A zone 96rps 61rps 51rps 33rps
B zone 96rps 61rps 51rps 33rps
C zone 96rps 61rps 51rps 33rps
D zone 57rps 42rps 36rps 27rps
E zone 57rps 42rps 36rps 27rps
F zone 57rps 42rps 36rps 27rps
When the outdoor
temperature drops
When the outdoor
temperature rises
( Table 2 : Limit of maximum speed based on outdoor temperature )
64rps
96rps
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.
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency to Maximum Frequency .

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*G09LLCA
AO*G12LLCA 18rps 120rps
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
09LLCA X zone
J zone
Y zone
Operating
frequency
J zone
Y zone
X zone 33rps
25rps
0rps
12LLCA
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 120rps80rps 68rps
AO*G09LLCA
AO*G12LLCA
( Table 4 : Limit of maximum speed based on outdoor temperature )
Hi

4. AUTO CHANGEOVER OPERATION
01-03
(Fig. 3 : Operation flow chart in Auto changeover)
START
Room temp.
Room temp.
>Ts+2°C ?
COOLING OPERATION
HEATING OPERATION
YES
YES
NO
NO
NO
NO
YES
YES
TS: Setting temperature
<Ts- 2°C ?
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
NO
NO
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
YES
YES
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*G09LLCA AS*G12LLCA
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*G09/12LLCA 700rpm 600rpm
Y zone
0 480rpm 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)

6. OUTDOOR FAN CONTROL
( Table 9 : Outdoor fan speed )
The outdoor fan motor is turned on with the compressor start and
turned off with the compressor stop except for the defrost operation.
01-06
1. Outdoor Fan Motor
2. Fan Speed
Following table shows the type of the outdoor fan motor. The control method is different
between AC motor and DC motor.
( Table 8 : Type of Motor )
Cooling Heating
AO*G09LLCA
AO*G12LLCA
Dry
750rpm*1 / 0rpm
820rpm*1 / 0rpm
AC motor DC motor
AS*G09LLCA
AS*G12LLCA
*1: It may change by frosting etc.,
because these models use no feedback control.
(Input voltage: 230V)

7. LOUVER CONTROL
1. VERTICAL LOUVER CONTROL
3. SWING OPERATION
Each time the button is pressed, the air direction range will change as follow:
(Function Range)
01-07
The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
Cooling / Dry mode Horizontal flow
Heating mode Downward flow
When the swing signal is received from the remote controller, the vertical louver starts to swing.
(Table10 : Swinging Range)
Fig.8 : Air Direction Range
Cooling / Dry mode
Fan mode ( )
Types of Air flow Direction Setting:
, , , : During Cooling/Dry modes
, , , : During Heating
The Remote Controller's display does not change.
Use the air direction adjustments within the ranges shown above.
If you set the angle to position ~ for more than 30 minutes in Cooling or Dry mode,
they automatically return to position .
In Cooling or Dry mode, if the angle is set to position ~ for many hours,
condensation may be formed, and the drips may wet your property.
Range
Heating mode
Fanmode ( )
The SWING operation may stop temporarily when the air conditioner’s fan is not operating,
or when operating at very low speeds.
2. ADJUST THE RIGHT-LEFT LOUVERS
Move the Right-Left louvers to adjust air flow in the direction you prefer.
Knob (2 places)
To select Vertical Airflow Swing Operation
To select Horizontal Airflow Swing Operation
(No function)
1
2
3
4567
Right-Left Louvers
Knob

8. COMPRESSOR CONTROL
01-08
1. OPEARTION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in the Table 11.
Cooling / Dry Heating
Minimum Maximum Minimum Maximum
AO*G09LLCA
AO*G12LLCA 18rps 64rps 18rps 120rps
96rps
AO*G09LLCA
AO*G12LLCA 56rps 74rps 87rps
(Table 11 : Compressor frequency range)
2. OPEARTION FREQUENCY CONTROL AT NORMAL START UP
The compressor frequency soon after the start-up is controlled as shown in the Fig.9.
(Fig.9 : Compressor control at start-up)
Time Time Time Time Time
(Frequency)
Frequency Frequency Frequency Frequency Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
Time Time Time Time Time
AO*G09LLCA
AO*G12LLCA 60sec 100sec 140sec
(Time)
97rps 108rps
Frequency
Time 6
Frequency
Time 6
119rps
200sec 410sec350sec
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table12.
Under Over Under Over Under Over
AO*G09LLCA
AO*G12LLCA 25rps 25rps 30rps-------
(Table12 : Limitation of Compressor Frequency)
10°C 14°C 40°C
Under Over Under Over Under Over Under Over
AO*G09LLCA
AO*G12LLCA 25rps 25rps 22rps 30rps-------
- 3°C 7°C 14°C 40°C
[ Cooling/ Dry ]
[ Heating ]

9. TIMER OPEARTION CONTROL
1. OPEARTION FREQUENCY RANGE
The Table 13 shows the available timer setting based on the product model.
ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER
AS*G09LLCA
AS*G12LLCA
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
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.
( Table 13 : Timer Setting )
2. PROGRAM TIMER
Stop mode Stop mode Stop mode
Operation mode Operation mode
Set time Set time Set time Set time
01-09
9-1 WIRELESS REMOTE CONTROLLER

3. SLEEP TIMER
If the sleep 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°C.
It increases the setting temperature another 1°C after 1 hour.
After that, the setting temperature is not changed and the operation is stopped at the time
of timer setting.
Ts
+1°C
+2°C
Set 60min
In the heating operation mode
When the sleep timer is set, the setting temperature is decreased 1°C.
It decreases the setting temperature another 1°C every 30 minutes.
Upon lowering 4°C, the setting temperature is not changed and the operation stops at
the time of timer setting.
-4°C
-3°C
-2°C
-1°C
Set 30min 30min 30min
01-10

01-11
The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped,
even if any operation is given.
At the time when the air conditioner is switched from the cooling mode to heating mode, the
compressor is stopped, and the four-way valve is switched in 2 minutes and 20 seconds later after
the compressor stopped.
11. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
12. FOUR-WAY VALVE EXTENSION SELECT
10. TEST OPERATION CONTROL
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.
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 started with
the memorized operation contents.
When the power is interrupted and recovered during timer operation, since the timer operation time
is shifted by the time the power was interrupted, an alarm is given by blinking (7 sec ON/2 sec OFF)
the indoor unit body Timer lamp.
[ Operation contents memorized when the power is interrupted ]
Operation mode
Set temperature
Set air flow
Timer mode and set time
Set air flow Direction
Swing
ECONOMY operation
13. AUTO RESTART
14. MANUAL AUTO OPERATION (Indoor unit body operation)
When the remote control is lost or battery power dissipated, this function will work without the remote control.
When MANUAL AUTO button is set more than 3seconds and less than 10seconds, MANUAL AUTO OPERATION
will be started as shown in Table14.
To stop operation, press the MANUAL AUTO button for 3seconds.
(Table14 : MANUAL AUTO OPERATION) Press and hold MANUAL AUTO
button for 3 ~ 10seconds
OPERATION MODE Auto changeover
FAN CONT. MODE Auto
TIMER MODE Continuous
SETTING TEMP. 24°C
SETTING LOUVER Standard
SWING
ECONOMY
OFF
OFF
(No timer setting available)
Manual auto operation

01-12
15. FORCED COOLING OPERATION (TEST OPERATION)
Forced cooling operation is started when press MANUAL AUTO button for 10 seconds or more.
During the forced cooling operation, it operates regardless of room temperature sensor.
Operation lamp and Timer lamp blink at the same time during the forced cooling operation.
They blink for 1 second ON and 1 second OFF on both Operation lamp and Timer lamp (same as test operation).
Forced cooling operation is released after 60 minutes of starting operation or pressing MANUAL AUTO button
for 3 seconds or pressing START/STOP button on the remote controller.
( Table15 : FORCED COOLING OPERATION )
When FORCED COOLING OPERATION is set, the operation is controlled as shown in Table15.
Forced cooling operation
Cooling
Hi
Horizontal
(It is changed follow as setting of remote controller)
OFF
Room Temp is not controlled
-
-
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING
ECONOMY
16. COMPRESSOR PREHEATING
17. ECONOMY OPERATION
The ECONOMY operation functions by pressing ECONOMY button on the remote controller.
At the maximum output, ECONOMY Operation is approximately 70% of normal air conditioner operation
for cooling and heating.
The ECONOMY operation is almost the same operation as below settings.
Mode Cooling/ Dry Heating
Target temperature Setting temp.+1°C Setting temp.-1°C
( Table 16 )
When the outdoor heat exchanger temperature is lower than 5°C and the all 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.
18. POWERFUL OPERATION
The POWERFUL OPERATION functions by pressing POWERFUL button on the remote controller.
The indoor unit & outdoor unit will operate at maximum power as shown in Table17.
Release Condition is as follows.
[Cooling / Dry]
- Room temperature < Setting temperature - 1.5°C or Operation time has passed 20 minutes.
COMPRESSOR FREQUENCY Maximum
FAN CONT. MODE Powerful
SETTING LOUVER Cooling/ Dry : 3, Heating : 5
(Table17)
Powerful operation
=
=
[Heating]
- Room temperature > Setting temperature +1.5°C or Operation time has passed 20 minutes.

01-13
19. DEFROST OPERATION CONTROL
1. CONDITION OF STARTING THE DEFROST OPERATION
The defrost operation starts as shown in the following Table 18.
2. CONDITION OF THE DEFROST OPERATION COMPLETION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than +16°C or
Compressor operation time has passed 15 minutes.
(Table 18 : Condition of starting Defrost Operation)
Defrost operation is released when the conditions become as shown in Table 19.
(Table 19 : Defrost Release Condition)
Integrating defrost
If the compressor continuous operation time is less than 10 minutes,
the OFF number of the compressor is counted.
If any defrost operated, the compressor OFF count is cleared.
Normal defrost Compressor integrating operation time
Less than 25 minutes More than 25 minutes
Does not operate Outdoor heat exchanger temp. < -17°C
(at outside air temp. > -10°C)
Outdoor heat exchanger temp. < Outside air temp.- 7°C
or Outdoor heat exchanger temp. < - 20°C
(at outside air temp. < -10°C)
More than 240 minutes
(For continuous operation)
Less than 10 minutes
( For intermittent operation )
Compressor integrating operation time
Outdoor heat exchanger
temperature below -3°C
More than 213 minutes
(For continuous operation)
Outdoor heat exchanger
temperature below -5°C
OFF count of the compressor
40 times
=
=
=
=

01-14
Outdoor fan : OFF
Compressor speed : 0 rps
4-way valve : OFF
Compressor speed : 90rps
3. Defrost Flow Chart
The defrosting shall proceed by the integrating operation time, outdoor temperature
and outdoor heat exchanger temperature as follows.
(Not defrosted for 10 minutes)
Heating operation start : Compressor ON
Outdoor HEX temp.: Over 16°C
or
Compressor ON time: Maximum 15 minutes
Defrost end
Outdoor HEX temp.
Below - 17°C
Outdoor HEX temp.
- Outside air temp.
Below - 7°C
or
Outdoor HEX temp.
Below - 20°C
Integrating defrost
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Defrost start
Normal defrost
Outside air temp. > -10°C Outside air temp. < -10°C
=
Compressor
OFF count :
40 times
(Less than 10min.)
Compressor
integrating
operation:
Over 240 min.
Outdoor
heat exchanger
temperature:
Below - 3°C
Compressor
integrating
operation:
Over 213 min.
Outdoor
heat exchanger
temperature:
Below - 5°C
Intermittent operation Continuous operation

20. OFF DEFROST OPEARTION CONTROL
01-15
1. OFF DEFROST OPERATION CONDITION
When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat
exchanger, the defrost operation will proceed automatically. In this time, if indoor unit Operation lamp
flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost,
and then stop.
OFF Defrost Flow Chart
Heating operation stop
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature:
Over 16°C or
Compressor ON time: Over 15 minutes
Defrost end
2. OFF DEFROST END CONDITION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than 16°C or
Compressor operation time has passed 15 minutes.
In heating operation, the outdoor heat exchanger temperature is less than - 4°C,
compressor continuous operation more than 10 minutes, and
compressor operation integrating time lasts for more than 30 minutes.
Outdoor heat exchanger temperature :
Below - 4°C
Compressor continuous operation :
Over 10 minutes
Compressor integrating operation :
Over 30 minutes

21. VARIOUS PROTECTIONS
1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL
The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature.
When the discharge temperature becomes higher than Temperature , the compressor frequency
is decreased 20rps, and it continues to decrease the frequency for 20rps every 120 seconds until
the temperature becomes lower than Temperature .
When the discharge temperature becomes lower than Temperature , the protection control of the
compressor frequency will be released.
When the discharge temperature becomes higher than Temperature , the compressor is stopped
and the indoor unit body Operation lamp and Timer lamp starts blinking.
104°C 101°C 110°C
(Table 20 : Discharge temperature over rise prevension control / Release temperature)
Temperature Temperature Temperature
2. CURRENT RELEASE CONTROL
The compressor frequency is controlled so that the outdoor unit input current does not exceed
the current limit value that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.
( Table 21 : Current release operation value / Release value )
01-16
[ Heating ]
OT : Outdoor Temperature
[ Cooling ]
AO*G09LLCA
OT (Control / Release)
3.5A / 3.0A
4.0A / 3.5A
5.0A / 4.5A
46°C
40°C
OT : Outdoor Temperature
AO*G09LLCA
OT (Control / Release)
5.0A / 4.5A
5.0A / 4.5A
5.0A / 4.5A
5.0A / 4.5A
17°C
10°C
5°C
[ Heating ]
OT : Outdoor Temperature
[ Cooling ]
AO*G12LLCA
OT (Control / Release)
4.0A / 3.5A
5.0A / 4.5A
6.0A / 5.5A
46°C
40°C
OT : Outdoor Temperature
AO*G12LLCA
OT (Control / Release)
5.5A / 5.0A
7.0A / 6.5A
8.0A / 7.5A
8.5A / 8.0A
17°C
10°C
5°C