Fujitsu AB F18LAT Series Service Instruction page 11

5. COOL AIR PREVENTION CONTROL (Heating mode)
The maximum value of the indoor fan speed is set as shown in Figure 8, based on the detected
temperature by the indoor heat exchanger sensor on heating mode.
When the compressor does not operate, the indoor fan motor operates [S-Lo] mode.
( Fig.8 : Cool Air Prevention Control )
5-1. For Ceiling type
Fan mode : HIGH
Indoor heat exchanger
temperature
42°C
39°C
37°C
30°C
5-2. For Duct type
Fan mode : HIGH
Indoor heat exchanger
temperature
37°C
29°C
5-3. For Cassette type
Fan mode : HIGH
Indoor heat exchanger
temperature
42°C
39°C
37°C
30°C
6. DRY OPERATION
Refer to the Figure 4.
During the dry mode operation, the fan speed setting can not be changed.
Indoor heat exchanger
temperature
Hi
Me+
Lo
Cool air
prevention
S-Lo
[ Cool air prevention 500rpm, S-Lo 300rpm ]
Indoor heat exchanger
temperature
HIGH mode
LOW mode
S-LOW mode
Indoor heat exchanger
temperature
Hi
Me+
Lo
Cool air
prevention
S-Lo
[ Cool air prevention 400rpm, S-Lo 300rpm ]
Fan mode : MED, LOW, QUIET
Indoor heat exchanger
temperature
39°C
37°C
37°C
34°C
30°C
32°C
24°C
Fan mode : MED, LOW, QUIET
Indoor heat exchanger
temperature
37°C
32°C
29°C
24°C
Fan mode : MED, LOW, QUIET
Indoor heat exchanger
temperature
39°C
37°C
37°C
34°C
30°C
32°C
24°C
01-07
Indoor heat exchanger
temperature
Setting
FAN mode
Lo (Qu)
Cool air
prevention
S-Lo
Indoor heat exchanger
temperature
SETTING
FAN MODE
LOW mode
S-LOW mode
Indoor heat exchanger
temperature
Setting
FAN mode
Lo (Qu)
Cool air
prevention
S-Lo
34°C
32°C
24°C
32°C
24°C
34°C
32°C
24°C