Fujitsu AS G07LLCC Series Service Manual page 9

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]
of [Heat] operation modes Quiet, Lo, Me, High, as shown in Table 6.
( Fig.5 : Airflow change - over ( Heating : Auto ) )
When the room
temperature rises
TR-Ts > -1°C
=
-1°C > TR-Ts > -2°C
=
-2°C > TR-Ts
6. COOL AIR PREVENTION CONTROL (Heating mode)
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 )
<Normal operation>
When the Indoor heat
exchanger temp. rises
* Hi or setting
Fan mode
42°C
* Me+ or setting
Fan mode
39°C
* Lo or setting
Fan mode
37°C
Cool air
prevention
30°C
7. MOISTURE RETURN PREVENTION CONTROL (Cooling mode& Dry mode)
Switch the airflow [Auto] at cooling mode, and the indoor fan motor will run as shown in Fig.7.
8. INDOOR UNIT FAN CONTROL FOR ENERGY SAVING (Cooling mode)
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."
( Fig.7 : Indoor fan control )
Compressor
ON
OFF
Indoor fan
Setting air flow
Indoor fan
(as shown in Table 7)
S-Lo
OFF
10
( Table 7 : Indoor fan speed )
Dry
X zone J zone
700rpm 600rpm
[Quiet], the indoor motor will run at a constant airflow
Lo mode
Me mode
Me+ mode
When the Indoor heat
exchanger temp. drops
37°C
34°C
32°C
28°C
S-Lo
* Lower speed is selected.
30 60
Cooling
700rpm
When the room
temperature drops
TR-Ts > -1.5°C
=
-1.5°C > TR-Ts > -2.5°C
-2.5°C > TR-Ts
When the Indoor heat
exchanger temp. rises
42°C
39°C
37°C
30°C
180 60 180 60
01-05
TR : Room temperature
Ts : Setting temperature
=
<Powerful operation>
When the Indoor heat
exchanger temp. drops
Powerful
Hi
Lo
Cool air
prevention
S-Lo
* Lower speed is selected.
10 30
(sec)
37°C
34°C
32°C
28°C