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 Speeds (rpm)
In cooling operation
In heating operation
Compressor speed
RAS-18J2
A
VSG-E
Hz < 20.4
20.4 ≤ Hz < 30.6
30.6 ≤
Hz
Compressor speed
RAS-18J2
A
VSG-E
Hz < 20.4
20.4 ≤ Hz < 48.6
48.6 ≤
Hz
RAS-22J2
A
VSG-E
Hz < 20.5
20.4 ≤ Hz < 30.7
30.6 ≤
Hz
RAS-22J2
A
VSG-E
Hz < 20.5
20.4 ≤ Hz < 48.7
48.6 ≤
Hz
RAS-24J2
A
VSG-E
Hz < 20.4
20.4 ≤ Hz < 32.4
32.4 ≤
Hz
RAS-24J2
A
VSG-E
Hz < 20.6
20.4 ≤ Hz < 43.8
43.8 ≤
Hz
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
f6
fB
f8
fE
fA
fE
f7
f8
f9
f5
fA
f7
fE
f9
fE
f9
fB
fE
f3
f7
f5
f9
f7
fB
fE
fE
fE
f2
f5
f4
f7
f6
f9
fE
fE
fE
f1
f3
f3
f5
f4
f7
fE
fE
fE
f1
f2
f2
f4
f3
f5
fE
fF
fF
OFF
fB
OFF
fE
f1
fE
To < - 10°C
To ≥ 0°C
When To is abnormal
When To is abnormal
To ≥ 28°C
To ≥ 5°C
To ≥ 15°C
To ≥ -3°C
To ≥ 5.5°C
To ≥ -10°C
Fan speed range
Fan speed range
To
To ≥ 38°C
To
To ≥ 10°C
To ≥ 0°C
Fan speed range
f0
f1
f2
f3
f4
f5
f6
f7
f8
f9
fA
fB
fC
fD
fE
fF
RAS-18J2
A
VSG-E
0
300
300
300
360
450
500
550
600
650
700
800
900
900
900
900
RAS-22J2
A
VSG-E
0
300
300
300
360
450
500
550
600
650
700
800
900
950
950
950
RAS-24J2
A
VSG-E
0
300
300
300
450
500
600
650
650
700
750
800
900
900
900
950
Model name
- 38 -
