Fujitsu ASU30RLE Service Instruction

4. HEATING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Fig.6.
On the other hand, if switched in [High] [Quiet], the indoor motor will run at a constant airflow
of [Heat] operation modes Quiet, Low, Med, High, as shown in Table 5.
( Fig.6 : Airflow change - over ( Heating : Auto ) )
5. COOL AIR PREVENTION CONTROL
The maximum value of the indoor fan speed is set as shown in Fig.7, 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] or [Stop] mode.
( Fig.7 : Cool air prevention control )
107.6°F
(42°C)
86°F
(30°C)
93.2°F
(34°C)
102.2°F
(39°C)
98.6°F
(37°C)
98.6°F
(37°C)
89.6°F
(32°C)
82.4°F
(28°C)
Cool air
prevention
S-Lo
Indoor heat exchanger
temperature rises
Indoor heat exchanger
temperature drops
Hi
*Me+
or setting fan mode
*Lo
or setting fan mode
*Lo
or setting fan mode
*Lo
or setting fan mode
*Lower speed is selected.
Indoor heat exchanger
temperature rises
Indoor heat exchanger
temperature drops
Hi
*Me+
or setting fan mode
*Lo
or setting fan mode
*Lower speed is selected.
10 min. later
107.6°F
(42°C)
86°F
(30°C)
102.2°F
(39°C)
98.6°F
(37°C)
93.2°F
(34°C)
98.6°F
(37°C)
89.6°F
(32°C)
82.4°F
(28°C)
TR-Ts > -3°F
(-1.5°C)
=
-5°F > TR-Ts
(-2.5°C)
-3°F > TR-Ts > -5°F
(-1.5°C) (-2.5°C)
=
TR-Ts > -2°F
(-1°C)
=
-4°F > TR-Ts
(-2°C)
-2°F > TR-Ts > -4°F
(-1°C) (-2°C)
=
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
Lo
Me
Me+
6. DEFROST OPERATION
When the defrost operation starts, the indoor fan runs according to cool air prevention control for 20 seconds.
And the fan is stopped if 20 seconds have passed.
When 60 seconds have passed after defrost operation is released,
the fan runs according to cool air prevention control.
01-05

Fujitsu ASU30RLE Specifications

General

Brand	Fujitsu
Model	ASU30RLE
Category	Air Conditioner
Language	English