Fujitsu AB 14LBAJ Series Service Instruction page 11

5. COOL AIR PREVENTION CONTROL (Heating mode)
5-1. For AB/ AR/ AU Type
The maximum value of the indoor fan speed is set as shown in Figure 4, based on the detected
temperature by the indoor heat exchanger sensor on heating mode.
( Fig.4 : Cool Air Prevention Control )
Indoor heat exchanger
temperature
33°C
30°C
5-2. For AB*F/ AU*F Type
When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 5,
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.5 : Cool Air Prevention Control )
< [Hi] setting >
Indoor heat exchanger
temperature
42°C
39°C
37°C
30°C
5-3. For AR*F Type
When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 6,
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.6 : Cool Air Prevention Control )
< [Hi] setting >
Indoor heat exchanger
temperature
Hi mode
37°C
Lo mode
30°C
S-Lo mode
Indoor heat exchanger
temperature
Setting
Fan mode
Lo mode
S-Lo mode
Indoor heat exchanger
temperature
Hi
Me+
Lo
Cool air
prevention
S-Lo
Indoor heat exchanger
temperature
01-08
30°C
< The other of [Hi] setting >
Indoor heat exchanger
temperature
39°C
37°C
37°C
34°C
30°C
32°C
24°C
< The other of [Hi] setting >
Indoor heat exchanger
temperature
37°C
32°C
30°C
24°C
Indoor heat exchanger
Setting
temperature
FAN mode
Lo (Qu)
Cool air
prevention
S-Lo
Indoor heat exchanger
temperature
Setting
Fan mode
Lo (Qu) mode
S-Lo mode
34°C
32°C
24°C
32°C
24°C