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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.
Outdoor fan speed (rpm)
Ta p
f 1
f 2
f 3
f 4
f 5
f 6
f 7
230
300
350
410
480
500
530
Ta p
f 9
f A
f B
f C
f D
f E
f F
640 640
670 670
700 700
800 800
800 800
900 1000
900 1000
RAS-15LAV-UL
RAS-17LAV-UL
f 0 0
RAS-15LAV-UL
RAS-17LAV-UL
RAS-22LAV-UL
230
300
350
410
480
500
530
0
230
300
350
410
480
500
530
0
f 8 560 560
RAS-22LAV-UL
640
670
750
920
920
1000
1000
560
Ta p
f 1
f 2
f 3
f 4
f 5
f 6
f 7
230
300
350
410
480
500
530
Ta p
f 9
f A
f B
f C
f D
f E
f F
640 640
670 670
700 700
800 800
800 800
900 1000
900 1000
RAS-15LAV-UL
RAS-17LAV-UL
f 0 0
RAS-15LAV-UL
RAS-17LAV-UL
RAS-22LAV-UL
230
300
350
410
480
500
530
0
230
300
350
410
480
500
530
0
f 8 560 560
RAS-22LAV-UL
640
670
750
920
920
1000
1000
560
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 ≥ 22°F (-5°C)
To ≥ 50°F (10°C)
To ≥ 42°F (5.5°C)
To ≥ 22°F (-5°C)
To < 22°F (-5°C)
To ≥ 50°F (10°C)
To ≥ 42°F (5.5°C)
To ≥ 22°F (-5°C)
To < 22°F (-5°C)
FILE NO. SVM-10020
In cooling operation
Compressor speed (rps)
To
During ECO,
QUIET and
comfort sleep
When To is abnormal
< 22.1 < 50.3 50.3 <
MIN MAX MIN MAX MIN MAX
f 6 f 9 f 8 f B f A f E
f 5 f 9 f 7 f B f 9 f E
f 3 f 7 f 5 f 9 f 7 f B
f 1 f 3 f 1 f 7 f 3 f 9
f 1 f 3 f 1 f 5 f 3 f 7
f 0 f 1 f 0 f 3 f 1 f 4
f 6 f 9 f 8 f B f A f B
f 5 f 9 f 7 f B f 9 f B
f 3 f 7 f 5 f 9 f 7 f B
f 1 f 3 f 1 f 7 f 3 f 9
f 1 f 3 f 1 f 5 f 3 f 7
f 0 f 1 f 0 f 3 f 1 f 4
f 1f Ff 1f Ff 1f F
In Heating operation
Compressor speed (rps)
To
During
ECO mode
When To is abnormal
< 30.5 < 55.1 55.1 <
f 6f 8f 9
f 8 f A f C
f A f B f D
f A f B f D
f 5f 7f 9
f 7 f 9 f B
f 9 f A f B
f 9 f A f B
f Df Df D
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 ≥ 22°F (-5°C)
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)