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.
2) Fan speed
≥
400
when the motor stopped.
Air conditioner ON
(Remote controller)
YES
YES
NO
NO
Indoor unit controller
Fan motor ON
3) Fan lock
OFF status of
fan motor continues.
4) Motor operates as shown in the table below.
1) Outdoor unit
operation command
(Outdoor fan control)
Air conditioner
OFF
Alarm
display
Outdoor fan speed (rpm)
FILE NO. SVM-17057
- 31 -
In cooling operation
RAS-25PAVSG-ND
Hz < 13.8
13.8 ≥ Hz < 32.4
32.4 ≤ Hz
Compressor speed
(Hz)
RAS-35PAVSG-ND
Hz < 21.0
21.0 ≥ Hz < 46.2
46.2 ≤ Hz
Fan tap
MIN
MAX
MIN
MAX
MIN
MAX
To ≥ 38°C
W6
WB
W8
WE
WA
WE
To ≥ 28°C
W5
WA
W7
WE
W9
WE
To ≥ 15°C
W3
W7
W5
W9
W7
WB
To ≥ 5.5°C
W2
W5
W4
W7
W6
W9
To ≥ 0°C
W1
W3
W3
W5
W4
W7
To ≥ - 4°C
W1
W2
W2
W4
W3
W5
To < - 4°C
OFF
OFF
OFF
W3
W1
W4
When To is abnormal
OFF
WB
OFF
WE
W1
WE
To
In heating operation
RAS-25PAVSG-ND
Hz < 13.8
13.8 ≥ Hz < 32.4
32.4 ≤ Hz
Compressor speed
(Hz)
RAS-35PAVSG-ND
Hz < 21.0
21.0 ≥ Hz < 46.2
46.2 ≤ Hz
Fan tap
MIN
MAX
MIN
MAX MIN MAX
To ≥ 10°C
W7
W8
W9
To ≥ 5°C
W9
WB
WE
To ≥ -3°C
WE
WE
WE
To ≥ -10°C
WE
WE
WE
To < - 10°C
WE
WE
WE
When To is abnormal
WE
WE
WE
To
Tap
RAS-25PAVSG-ND
RAS-35PAVSG-ND
W0
0
0
W1
200
200
W2
300
300
W3
300
300
W4
360
360
W5
440
440
W6
500
500
W7
550
550
W8
600
600
Tap
RAS-25PAVSG-ND
RAS-35PAVSG-ND
W9
650
650
WA
700
700
WB
700
700
WC
750
750
WD
750
800
WE
750
850
WF
800
900