Fujitsu ACUH12LUAS1 Service Manual

3. Fan control
Tr: Room temperature
Ts: Setting temperature
3-1. Indoor fan control
¢ Fan speed
Indoor fan speed is defined as below.
Operation mode Fan mode
Speed (rpm)
ACUH09LUAS1 ACUH12LUAS1 ACUH18LUAS1
Heating
HIGH 590 650 830
MED+ 570 620 770
MED 540 580 730
LO→ 490 520 630
QUIET 440 460 500
Cool air
prevention
400 400 400
S-LO→ 300 300 300
Cooling/Fan
HIGH 590 650 790
MED 540 580 630
LO→ 490 520 540
QUIET 440 460 460
Soft quiet
400*
1
400*
1
400*
1
S-LO→
300*
2
300*
2
300*
2
Dry
↓ zone: 440
J zone: 440
↓ zone: 460
J zone: 460
↓ zone: 460
J zone: 460
*1: Fan mode only
*2: Cooling mode only
¢ Fan operation
Airflow can be switched in 5 steps such as AUTO, QUIET, LO→, MED, HIGH while indoor unit fan
only runs.
→hen fan mode is set at AUTO, it operates on MED fan speed.
¢ Cooling operation
Switch the airflow AUTO, and indoor fan motor will run according to room temperature, as below.
On the other hand, if switched in HIGH—QUIET, indoor motor will run at a constant airflow of COOL
operation modes QUIET, LO→, MED, HIGH as shown in “Fan speed” above.
Airflow change over (Cooling: Auto)
When room
temperature rises
When room
temperature drops
Tr - Ts ≥ 4°F (2°C)
HIGH mode
MED mode
LOW mode
4°F (2°C) > Tr - Ts ≥ 2°F (1°C)
2°F (1°C) > Tr - Ts
Tr - Ts ≥ 5°F (2.5°C)
5°F (2.5°C) > Tr - Ts ≥ 3°F (1.5°C)
3°F (1.5°C) > Tr - Ts
3-1. Indoor fan control - (04-10) - 3. Fan control
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS

Fujitsu ACUH12LUAS1 Specifications

General

Brand	Fujitsu
Model	ACUH12LUAS1
Category	Air Conditioner
Language	English