Fujitsu AOUH18LMAS1, Service Manual

Page: 163 / 215

7-6. POWERFUL operation
The PO→ERFUL operation starts by pressing PO→ERFUL button on the remote controller.
The indoor unit and outdoor unit operate at maximum power as shown in the table below.
ASUH18LMAS ASUH24LMAS
Compressor frequency Maximum
Fan mode PO→ERFUL
Vertical airflow direction
louver setting
Cooling
3
Dry
Heating 6 5
Release condition:
• Cooling/Dry
Room temperature ≤ Setting temperature -1°F (-0.5°C) or Operation time has passed 20 minutes.
• Heating
Room temperature ≥ Setting tempe1°F (+0.5°C) or Operation time has passed 20 minutes.
7-7. Fresh air control
The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as below.
Operation
Stop
Operation
Stop
Fan motor
(Indoor unit)
Fan motor
(for Fresh Air)
7-8. Compressor preheating
By preheating the compressor, warm airflow is quickly discharged when the operation is started.
• Triggering condition 1
– Outdoor temperature ≤ 68°F (20°C)
→hen outdoor temperature reaches 78.8°F (26°C), compressor preheating stops.
– 30 minutes after compressor stopped
•
Triggering condition 2
32.0°F
(0°C)
Off
On
Tn
Tn
35.6°F
(2°C)
Tn: Outdoor unit heat exchanger temp.
7-6. PO→ERFUL operation
- (04-25) -
7. Various control
C
O
N
TR
O
L
A
N
D
FU
N
C
TI
O
N
S
C
O
N
TR
O
L
A
N
D
FU
N
C
TI
O
N
S