Fujitsu AS*G09KXCA Series Service Instruction page 10

5. HEATING OPERATION
Switch the airflow [AUTO], and the indoor main fan motor will run according to a room temperature,
as shown in Fig. 7.
On the other hand, if switched in [Hi ] ~ [Quiet ], the indoor main fan motor will run at a constant airflow
of [HEAT] operation modes Quiet - , Lo -, Me , Hi , as shown in Table5.
( Fig.7 : Airflow change - over ( Heating : Auto ) )
TR-Ts Main Fan : Quiet
Dual Fan : Quiet
- 1°C
Main Fan : Me
Dual Fan : Lo
- 2°C
Main Fan : Hi
Dual Fan : Lo
Dual Fan setting is ON
6. COOL AIR PREVENTION CONTROL (Heating mode)
The maximum value of the indoor main fan speed is set as shown in Fig. 8, based on the detected
temperature by the indoor heat exchanger sensor on heating mode.
(Fig.8 : Cool Air Prevention Control)
[Normal operation]
Indoor heat exchanger
temperature
42°C
39°C
37°C
30°C
*Lower speed is selected
7. INDOOR UNIT FAN CONTROL FOR ENERGY SAVING (Cooling mode)
Switch the airflow at cooling mode, and the indoor main fan motor will run as shown in Fig.9.
It depends on the Function setting "Indoor unit fan control for energy saving."
( Fig.9 : Indoor Fan Control )
Compressor
ON
OFF
Indoor fan
Setting air flow
Indoor fan
(as shown in Table 6)
S-Lo
OFF
( Table6 : Indoor Fan Speed )
Dry
X zone J zone
960rpm 720rpm
- 2°C
- 3°C
TR-Ts
Indoor heat exchanger
temperature
*Hi or setting
Fan mode
37°C
*Me+ or setting
Fan mode
34°C
*Lo or setting
Fan mode
32°C
Cool air
prevention
S-Lo 28°C
10 30 60
Cooling
780rpm
TR-Ts Main Fan : Lo
Dual Fan : Lo
- 1°C
Main Fan : Me
Dual Fan : Lo
- 2°C
Main Fan : Hi
Dual Fan : Lo
Dual Fan setting is OFF
[Powerful operation]
Indoor heat exchanger
temperature
42°C
39°C
37°C
30°C
180 60
01-06
- 2°C
- 3°C
TR : Room temperature
TR-Ts
Ts : Setting temperature
Indoor heat exchanger
temperature
Powerful
Hi
Lo
Cool air
prevention
S-Lo
180 60 10
37°C
34°C
32°C
28°C
30
(SEC)