Fujitsu AOU09RL2, Service Instructions Manual

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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 )
01-05
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, High, as shown in Table 6.
6. COOL AIR PREVENTION CONTROL (Heating mode)
( Fig.5 : Airflow change - over ( Heating : Auto ) )
TR-Ts > -1.5° C
(-3°F)
=
-2.5° C
(-5°F)
> TR-Ts
-1.5° C
(3°F)
> TR-Ts > -2.5° C
(-5°F)
=
TR-Ts > -1° C
(-2°F)
=
-2° C
(-4°F)
> TR-Ts
-1° C
(-2°F)
> TR-Ts > -2° C
(-4°F)
=
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
Lo mode
Me mode
Me+ mode
42° C (108°F)
30 ° C (86°F)
34° C (93°F)
When the Indoor heat
exchanger temp. rises
When the Indoor heat
exchanger temp. drops
When the Indoor heat
exchanger temp. rises
When the Indoor heat
exchanger temp. drops
* Hi or setting
Fan mode
* Me+ or setting
Fan mode
* Lo or setting
Fan mode
Cool air
prevention
39° C (102°F)
37° C (99°F)
37° C (99°F)
32° C (90°F)
28° C (82°F) S-Lo
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 7)
S-Lo
OFF
10 30 60 180 60 180 60 10 30
(sec)
( Table 7 : Indoor fan speed )
X zone J zone
ASU09/12RL2 700rpm 600rpm
Y zone
0 480rpm 700rpm
Dry
Cooling
42° C
(108°F)
30 ° C
(86°F)
34° C
(93°F)
Powerful
Hi
Lo
Cool air
prevention
39° C
(102°F)
37°
C
(99°F)
37° C
(99°F)
32° C
(90°F)
28°
C
(82°F)
S-Lo
<Normal operation>
<Powerful operation>
* Lower speed is selected.
* Lower speed is selected.