Fujitsu R410A, Service Instruction

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5. INDOOR FAN CONTROL
The airflow can be switched in 5 steps such as AUTO, QUIET, LOW, MED, HIGH,
while the indoor fan only runs.
When Fan mode is set at (Auto), it operates on (MED) Fan Speed.
1. Fan speed
2. FAN OPERATION
( Table 4 : Indoor fan speed )
Operation mode Air flow mode
Speed (rpm)
1260
1120
1020
900
Cooling/ Fan
Hi
Hi
790
680
270
1260
Me+
Me
Me
Heating
Lo
Lo
1020
900
Quiet
Quiet
770
Dry
S-Lo
X zone : 770
J zone : 720
1530
1320
1220
1020
900
720
270
1480
1220
1020
900
X zone : 900
J zone : 850
Cool air prevention
3. COOLING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Fig. 3.
On the other hand, if switched in [HIGH] ~ [QUIET], the indoor motor will run at a constant
airflow of [COOL] operation modes QUIET, LOW, MED, HIGH,as shown in Table 4.
( Fig. 3 : Airflow change - over ( Cooling : AUTO ) )
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
TR-Ts > 4°F
(2°C)
2°F > TR-Ts
(1°C)
4°F > TR-Ts > 2°F
(2°C) (1°C)
=
TR-Ts > 5°F
(2.5°C)
=
3°F > TR-Ts
(1.5°C)
5°F > TR-Ts > 3°F
(2.5°C)
(1.5°C)
=
HIGH mode
MED mode
LOW mode
ASU18RLF ASU24RLF
4. DRY OPERATION
Refer to the Table 4.
During the dry mode operation, the fan speed setting can not be changed.
01-04