Fujitsu AS* G09LECB Original operating manual

SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTEDtype
Models Indoor unit Outdoor unit
AS* G09LECB
AS* G12LECB
AO* G09LECAN
AO* G12LECAN
INVERTER
SERVICE
INSTRUCTION
R410A

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..........................................................................................
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..............................................................................
17. COMPRESSOR PREHEATING..................................................................................
20. BASE HEATER OPERATION......................................................................................
01-01
01-02
01-03
01-04
01-05
01-07
01-08
01-09
01-10
01-13
01-13
01-13
01-13
01-14
01-14
01-14
01-15
01-15
01-15
21. DEFROST OPERATION CONTROL...........................................................................
23. VARIOUS PROTECTIONS..........................................................................................
22. OFF DEFROST OPERATION CONTROL...................................................................
01-16
01-18
01-19
01-13
2. TROUBLE SHOOTING
2-1 ERROR DISPLAY.......................................................................................................
2-1-1 INDOOR UNIT AND WIRED RMOTE CONTROLLER DISPLAY (OPTION)......
3. APPENDING DATA
2-1-2 WIRED REMOTE CONTROLLER DISPLAY (OPTION).....................................
2-2 TROUBLE SHOOTING WITH ERROR CODE............................................................
2-3 TROUBLE SHOOTING WITH NO ERROR CODE......................................................
02-01
02-01
02-02
02-03
02-24
2-4 SERVICE PARTS INFORMATION.............................................................................. 02-29
18. 10°C HEAT OPERATION............................................................................................
19. ECONOMY OPERATION............................................................................................
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.................................................................................... 03-05

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

( Fig. 1 : Limit of maximum speed 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 speed of the compressor.
* If the room temperature is 2°C higher than a set temperature, the compressor operation
speed will attain to maximum performance.
Minimum
speed
Maximum
speed
Maximum
speed
18rps 62rps 64rps
18rps 80rps 96rps
When outdoor
temperature drops
36°C
A zone
34°C 32°C
B zone
30°C 21°C
C zone
19°C
D zone
Hi Me Lo Quiet
A zone 64rps 50rps 42rps 30rps
B zone 64rps 50rps 42rps 30rps
C zone 64rps 50rps 42rps 30rps
09LECAN
D zone 42rps 35rps 30rps 23rps
A zone 96rps 61rps 51rps 33rps
B zone 96rps 61rps 51rps 33rps
C zone 96rps 61rps 51rps 33rps
12LECAN
D zone 57rps 42rps 36rps 27rps
( Table 1 : Compressor speed range )
When the compressor operates for 30 minutes continuously at over the maximum speed ,
the maximum speed is changed from Maximum speed to Maximum speed .
01-01
* When the room temperature is between +2°C to -2.5°C of the setting temperature,
the compressor speed is controlled within the range shown in Table1.
However, the maximum speed is limited in the range shown in Fig. 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.
10°C
E zone
F zone
0°C
12°C
2°C
When outdoor
temperature rises
F zone
E zone
F zone
E zone
52rps 45rps 40rps 29rps
52rps 45rps 40rps 29rps
57rps 42rps 36rps 27rps
57rps 42rps 36rps 27rps
AO*G09LECAN
AO*G12LECAN

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 speed of the compressor.
* If the room temperature is lower by 3°C than a set temperature, the compressor operation
speed will attain to maximum performance.
* If the room temperature is higher 2.5°C than a set temperatire, the compressor will be stopped.
* When the room temperature is between +2.5°C to -3°C of the setting temperature,
the compressor speed is controlled within the range shown in Table2.
( Table 2 : Compressor speed range )
01-02
Minimum
speed
Maximum
speed
18rps 119rps
18rps 130rps
AO*G09LECAN
AO*G12LECAN

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 Table 3.
However, the compressor frequency after the start-up is 56rps for 80seconds.
Ts+0.5°C
Ts -1.5°C
Ts -0.5°C
Ts+1.5°C
( Table 3 : Compressor frequency )
( Fig.2 : Compressor control based on room temperature )
01-03
Operating
speed
30rps
23rps
0rps
09LECAN X zone
J zone
Y zone
Operating
speed
J zone
Y zone
X zone 33rps
25rps
0rps
12LECAN
Room Room
temperature drops temperature rises
X zone
J zone
Y zone

4. AUTO CHANGEOVER OPERATION
01-04
(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, Low, Med, Hi, while the indoor fan only runs.
When Fan mode is set at [Auto], it operates on [Me] Fan Speed.
01-05
1. FAN SPEED
2. FAN OPERATION
( Table 5 : Indoor fan speed )
AS*G09/12LECB
Operation mode Air flow mode Speed (rpm)
1440
1370
1200
980
Cooling/ Fan
Hi
Hi
700
600
480
1440
Me+
Me
Me
Heating
Lo
Lo
1200
920
Quiet
Quiet
680
* Soft Quiet 600
Dry
S-Lo
X zone: 680
J zone: 600
Cool air prevention
3. COOLING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig. 4.
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 5.
( 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
4. DRY OPERATION
Refer to the Table 5.
During the dry mode operation, the fan speed setting can not be changed.
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, Hi, as shown in Table 5.
( 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
Me
Me+
*Note, during Economy operation and operation mode is Fan,
air flow is 1 step downs.
(Hi > Me, Me > Lo, Lo > Quiet, Quiet > Soft Quiet)

Indoor heat exchanger
temperature rises
Indoor heat exchanger
temperature drops
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 prevention control)
01-06
6. COOL AIR PREVENTION CONTROL (Heating mode)
47°C
40°C
37°C
Cool air prevention
30°C
S-Lo
40°C
28°C
32°C
35°C
<Before 7 minutes upon running the compressor>
Lower of "Hi" and "setting fan speed"
Lower of "Me+" and "setting fan speed"
Lower of "Lo" and "setting fan speed"
Indoor heat exchanger
temperature rises
Indoor heat exchanger
temperature drops
47°C
40°C
40°C
35°C
<After 7 minutes upon running the compressor>
Lower of "Hi" and "setting fan speed"
Lower of "Me+" and "setting fan speed"
Lower of "Lo" and "setting fan speed"
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 6)
S-Lo
OFF
10 30 60 180 60 180 60 10 30
(sec)
( Table 6 : Indoor fan speed )
X zone J zone
AS* G09/ 12LECB 680rpm 600rpm
Y zone
0 480rpm 680rpm
Dry Cooling

6. OUTDOOR FAN CONTROL
01-07
( Table8 : Outdoor fan speed )
*The outdoor fan speed mentioned above depends on the compressor frequency.
(When the compressor frequency increases, the outdoor fan speed also changes to the higher
speed. When the compressor frequency decreases, the outdoor fan speed also changes to the
lower speed.)
*After the defrost control is operated on the heating mode, the fan speed keeps at the higher speed
as table9 without relating to the compressor frequency.
( Table9 : Outdoor fan speed after the defrost )
1. Outdoor Fan Motor
2. Fan Speed
AC Motor DC Motor
AO*G09/ 12LECAN
Following table shows the type of the outdoor fan motor. The control method is different
between AC motor and DC motor.
( Table7 : Type of Motor )
850rpm
Cooling Heating
AO*G09LECAN
AO*G12LECAN
D
F
Zone
850/ 750/ 670/ 500
850/ 750/ 680/ 550/ 450
900/ 750/ 680/ 550/ 450
Refer to Fig.8
(rpm)
230
G 150
330
230/ 200
D
F330
850/ 750/ 670/ 500
230/ 200
G
Dry
760/ 470
230
150
760/ 470
900rpm
( Fig.8 : Outside air temperature zone selection )
12°C
0°C
Outside air
temperature rises
Outside air
temperature drops
F zone
D zone
G zone
2°C
10°C
AO*G09LECAN
AO*G12LECAN

7. LOUVER CONTROL
1. VERTICAL LOUVER CONTROL
2. SWING OPERATION
Each time the button is pressed, the air direction range will change as follow:
Cooling / Dry mode / Heating mode / Fan mode
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 mode Horizontal flow
Heating mode Downward flow
When the temperature of the air being blown out is low at the start of heating operation or during
defrosting, the airflow direction temporarily becomes to prevent cold air being blown onto the body.
During use of the Cooling and Dry modes, do not set the Air Flow Direction Louver in the Heating
range ( ) for long period of time, since water vapor many condense near the outlet louvers and
drop of water may drip from the air conditioner. During the Cooling and Dry modes, if the Air Flow
Direction Louvers are left in the heating range for more than 30minutes, they will automatically
return to position .
During Monitor operation in AUTO CHANGEOVER mode, the airflow direction automatically
becomes , and it cannot be adjusted.
Cooling mode / Dry mode / Fan mode( )
Heating mode / Fan mode( )
(Function Range)
(Fig 9: Air Direction Range)
(Operation Range)
When the swing signal is received from the remote controller, the vertical louver starts to swing.
(Swinging Range)
When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrrupted
and the louver stops at the memorized position.
01-08

8. COMPRESSOR CONTROL
1. OPERATION SPEED RANGE
The operation speed of the compressor is different based on the operation mode as
shown in the Table 10.
Cooling DryHeating
Minimum Maximum Minimum Maximum Minimum Maximum
AO*G09LECAN
AO*G12LECAN
18rps 64rps 18rps 119rps
18rps 96rps 18rps
23rps
25rps
30rps
33rps130rps
(Table 10 : Compressor operation speed range)
2. OPERATION SPEED CONTROL AT START UP
The compressor speed soon after the start-up is controlled as shown in the Fig. 10.
(Fig.10 : Compressor control at start-up)
80sec 60sec 60sec 180sec 60sec 60sec
56rps
74rps
87rps
108rps
119rps
97rps
01-09
Time
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table11.
AO* G09/ 12LECAN 39rps 26rps 18rps 30rps
(Table11 : Limitation of Compressor Frequency)
[ Cooling/ Dry ]
[ Heating ]
Under Over Under Over Under Over
10°C 14°C 40°C
AO* G09/ 12LECAN
Under Over Under Over Under Over Under Over
30rps 30rps 26rps 30rps18rps
- 3°C 7°C 14°C 40°C

9. TIMER OPEARTION CONTROL
1. OPEARTION FREQUENCY RANGE
The Table 12 shows the available timer setting based on the product model.
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
(Table 12 : Timer setting)
01-10
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.
2. PROGRAM TIMER
Stop mode Stop mode Stop mode
Operation mode Operation mode
Set time Set time Set time Set time
ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER
AS* G09/ 12LECB
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
01-11

01-12
9-2 WIRED REMOTE CONTROLLER (OPTION)
The Table13 shows the available timer setting based on the product model.
ON TIMER / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER
AS* G09/ 12LECB
( Table13 : Timer Setting )
1. ON TIMER / OFF TIMER
Same to 9-1 1.ON TIMER / OFF TIMER and shown in those.
2. WEEKLY TIMER
This timer function can set operation times of the each day of the week.
All days can be set together,the weekly timer can be used to repeat the timer setting for all of the days.
3. TEMPERATURE SET BACK TIMER
This timer function can change setting temperature of setting operation times of the each day of the week.
This can be together with other timer setting.
Normal tmp.
ON OFF
Setting day Setting day Setting day
ON OFF ON OFF ON OFF
Set time Set time
Set back tmp.
Set time Set time

10. ELECTRONIC EXPANSION VALVE CONTROL
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.
The pulse range of the electronic expansion valve control is between 60 to 480 pulses.
The expansion valve is set at 480 pulses after 110 seconds of stopping compressor.
At the time of supplying the power to the outdoor unit, the initialization of the electronic
expansion valve is operated (528 pulses are input to the closing direction).
11. TEST OPERATION CONTROL
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.
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 timer time (set by wireless remote controller)
Set air flow Direction
Swing
Economy operation
10°C HEAT operation
12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
13. FOUR-WAY VALVE EXTENSION SELECT
14. AUTO RESTART
01-13
[ Wireless remote controller ]
Under the condition where the air conditioner runs, press the test run button of the remote control,
and the test operation control mode will appear.
During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously.
[ Wired remote controller (Option) ]
If the operation lamp is on, press the Start/Stop button to turn it off.
Press the Master Control and Fan Control buttons at the same time for more than two seconds
to start the test operation.
The operation lamp will light up and "o1" will be displayed on the set temperature display.
[ Release ]
Perform the test operation for 60 minutes.
Pressing the Start/Stop button will stop the test operation.

15. MANUAL AUTO OPERATION (Indoor unit body operation)
17. COMPRESSOR PREHEATING
01-14
16. FORCED COOLING OPERATION
Forced cooling operation is started when pressing MANUAL AUTO button for 10 seconds or more.
During the forced cooling operation, it operates regardless of room temperature sensor.
Operation LED and timer LED blink during the forced cooling operation. They blink for 1 second ON
and 1 second OFF on both operation LED and timer LED (same as test run operation).
Forced cooling operation is released after 60 minutes of starting operation.
The FORCED COOLING OPERATION will start as shown in Table15.
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.
( Fig.11 : Outdoor heat exchanger temperature )
ON
5°C
7°C
OFF
If MANUAL AUTO Button is set, the operation is controlled as shown in Table14.
If the remote control is lost or battery power dissipated, this function will work without the remote control.
OPERATION MODE Auto changeover
FAN CONT. MODE Auto
TIMER MODE Continuous (No timer setting available)
SETTING TEMP. 24°C
SETTING LOUVER Standard
SWING OFF
(Table 14)
Manual auto operation
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING
( Table 15)
Forced cooling operation
Cooling
Hi
Horizontal
OFF
Room Temp is not controlled
-

01-15
18. 10°C HEAT OPERATION
The 10°C HEAT operation functions by pressing 10°C HEAT button on the remote controller.
The 10°C HEAT operation is almost the same operation as below settings.
Mode Heating
Setting temperature 10°C
Fan mode Auto
( Table16 )
19. ECONOMY OPERATION
The ECONOMY operation functions by pressing ECONOMY button on the remote controller.
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
( Table17 )
20. BASE HEATER OPERATION
The base heater is operated as shown in Fig. 12.
( Fig.12 : Base heater control )
ON
2°C
5°C
OFF
When outdoor
temperature drops
When outdoor
temperature rises
When the compressor stops, Base heater is OFF.
When the outdoor fan motor stops, Base heater is OFF.
In the cooling mode, Base heater is OFF.
In the defrost operation, Base heater maintains the same status
as before the compressor stops.

21. DEFROST OPERATION CONTROL
01-16
1. CONDITION OF STARTING THE DEFROST OPERATION
The defrost operation starts when the outdoor heat exchanger temperature sensor (Tn) detects
the temperature lower than the values shown in 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 35 minutes More than 35 minutes
Does not operate Tn < -17°C (at outside air temp. > -10°C)
Tn -Tn10 < -5deg
Tn -Tnb < -2deg
However, Tn < -6°C
Tn < Outside air temp.- 7°C
or Tn < - 20°C
(at -20°C < 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
=
=
=
=
=
=
Tn < Outside air temp.- 7°C
or Tn < - 30°C
(at outside air temp. < -20°C)
=
=
Tn10 : Temperature of continuous operation at 10 minutes.
Tnb : Back 5 minutes temperature

01-17
Outdoor fan : OFF
Compressor speed : 0 rps
EEV : 480pulse
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
Tn < - 17°C Tn <
Outside temp.- 7°C
or
Tn < - 20°C
Integrating defrost
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Defrost start
Normal defrost
Outside temp. > -10°C
-20°C< Outside temp.< -10°C
Tn <
Outside temp.- 7°C
or
Tn < - 30°C
Outside temp.< -20°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
== =
=
=
Tn -Tn10<-5deg
Tn -Tnb <-2deg
However,Tn< 6°C
=