Fujitsu ASU24RLF Service Instruction

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 in heating mode.
< ASU type >
01-09
5. HEATING OPERATION
Switch the airflow [Auto], and the indoor fan will run according to a room temperature,
as shown in Fig 5.
On the other hand, if switched in [Hi] [Quiet], the indoor fan will run at a constant airflow
of [Heat] operation modes Quiet, Lo, Me, Hi, as shown in Table 2.
6. COOL AIR PREVENTION CONTROL (For Heating and Min. Heat operation)
( Fig.5 : Airflow change - over ( Heating : Auto ) )
TR-Ts > -3°F(-1.5°C)
=
-5°F(-2.5°C) > TR-Ts
-3°F(-1.5°C) > TR-Ts > -5°F(-2.5°C)
=
TR-Ts > -2°F(-1°C)
=
-4°F(-2°C) > TR-Ts
-2°F(-1°C) > TR-Ts > -4°F(-2°C)
=
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
Lo
Me
Me+
107.6°F(42°C)
86°F
(30°C)
93.2°F
(34°C)
When Indoor heat exchanger
temperature rises
When Indoor heat exchanger
temperature drops
Hi
*Me+ or setting
FAN mode
Cool air
prevention
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)
S-Lo
*Lo or setting
FAN mode
84.2°F
(29°C)
When Indoor heat exchanger
temperature rises
When Indoor heat exchanger
temperature drops
*Lo or setting
FAN mode
98.6°F
(37°C)
89.6°F
(32°C)
75.2°F
(24°C)
*Hi or setting
FAN mode
S-Lo
During NORMAL HEATING OPERATION
< ARU type >
*Lower speed is selected
Field setting is necessary at AR and AU type as "Cool air prevention : effective"
TR-Ts > -3°F(-1.5°C)
=
-5°F(-2.5°C) > TR-Ts
-3°F(-1.5°C) > TR-Ts > -5°F(-2.5°C)
=
TR-Ts > -2°F(-1°C)
=
-4°F(-2°C) > TR-Ts
-2°F(-1°C) > TR-Ts > -4°F(-2°C)
=
When the room
temperature rises
When the room
temperature drops
Lo
Me
Hi
< AUU/ ARU/ AGU type >
< ASU type >
( Fig.6 : Airflow change - over for cool air prevention)
*Lower speed is selected

Fujitsu ASU24RLF Specifications

General

Brand	Fujitsu
Model	ASU24RLF
Category	Air Conditioner
Language	English