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Item
3. Outdoor fan
motor control
Operation flow and applicable data, etc.
The blowing air volume at the outdoor unit side is controlled.
Receiving the operation command from the controller of
indoor unit, the controller of outdoor unit controls fan speed.
* For the fan motor, a DC motor with non-stage variable
speed system is used. However, it is limited to 8 stages for
reasons of controlling.
Description
1) The operation command sent
from the remote controller is
processed by the indoor unit
controller and transferred to the
controller of the outdoor unit.
2) When strong wind blows at
outdoor side, the operation of air
conditioner continues with the
fan motor stopped.
3) Whether the fan is locked or not
is detected, and the operation of
air conditioner stops and an
alarm is displayed if the fan is
locked.
4) According to each operation
mode, by the conditions of
outdoor temperature (To) and
compressor revolution, the speed
of the outdoor fan shown in the
table is selected.
Air conditioner ON
(Remote controller)
YES
YES
NO
NO
Indoor unit controller
Fan motor ON
3) Fan lock
4) Motor operates as shown in the table below.
1) Outdoor unit
operation command
(Outdoor fan control)
Air conditioner
OFF
Alarm
display
2) Fan speed ≥ 400.
(by strong wind)
when the motor OFF.
Fan motor OFF continues
(Use wind for heat
exchanging)
Outdoor fan speed (rpm)
Tap
f 1
f 2
f 3
f 4
f 5
f 6
f 7
f 8
200 200
300 300
370 370
440 440
440 440
500 500
550 550
600 600
Tap
f 9
f A
f B
f C
f D
f E
f F
600 650
600 700
650 700
700 800
700 800
700 800
700 900
Compressor speed (rps)
To
During
ECO mode
When To is abnormal
~ 13.8 ~ 31.7
32.3 ~ MAX
MIN MAX MIN MAX MIN MAX
f 2 f 3 f A f C f D f F
f 2 f 3 f 7 f A f 9 f C
f 1 f 3 f 2 f 5 f 4 f 7
f 1 f 1 f 1 f 2 f 2 f 4
f 2 f 3 f B f C f C f D
In cooling operation
Compressor speed (rps)
To
During
ECO mode
When To is abnormal
~16.8 ~47.9
48.5 ~ MAX
f 3 f 8 f 9
f 3 f 9 f A
f 8 f A f D
f B f C f D
f 3 f 3 f 6
f 3 f 3 f 8
f 5 f 9 f 9
f 7 f A f B
f A f B f D
In Heating operation
f 2 f 3 f C f D f E f F
f 0 f 0 f 0 f 1 f 1 f 2
f D f F f D f F f F
f 2 f 3 f 2 f 3 f B f C
f D
RAS-09LAV-UL RAS-12LAV-UL
f 0 0 0
RAS-09LAV-UL RAS-12LAV-UL
To ≥ 100°F (38°C)
To ≥ 82°F (28°C)
To ≥ 59°F (15°C)
To ≥ 42°F (5.5°C)
To ≥ 32°F (0°C)
To <32°F (0°C)
To ≥ 100°F (38°C)
To ≥ 100°F (38°C)
To ≥ 50°F (10°C)
To ≥ 42°F (15°C)
To ≥ 22°F (-5°C)
To < 22°F (-5°C)
To ≥ 50°F (10°C)
To ≥ 42°F (15°C)
To ≥ 22°F (-5°C)
To < 22°F (-5°C)
FILE NO. SVM-10019