Outdoor Fan Motor Control - Toshiba RAS-18S3KV-E Service Manual

Item
3. Outdoor fan The blowing air volume at the outdoor unit side is controlled.
motor control
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.
Air conditioner ON
(Remote controller)
Indoor unit controller
1) Outdoor unit
operation command
(Outdoor fan control)
2) Fan speed ≥ 400
when the motor stopped.
Fan motor ON
3) Fan lock
4) Motor operates as shown in the table below.
In cooling operation
Compressor speed (rps)
To > 38°C
To > 28°C
To > 15°C
To
To > 5.5°C
To > 0°C
> -5°C
To
To > 38°C
> 28°C
To
During ECO,
To > 15°C
QUIET and
To > 5.5°C
comfort sleep
To > 0°C
> -5°C
To
When To is abnormal
Outdoor fan speed (rpm)
Tab
RAS-18S3AV-E
f 0 0
f 1 230
f 2 300
f 3 350
f 4 410
f 5 480
f 6 500
f 7 530
Operation flow and applicable data, etc.
YES
fan motor continues.
NO
YES
Air conditioner
NO
< 22.1 < 50.3
MIN MAX MIN MAX MIN MAX
f 6 f 9 f 8 f B
f 5 f 9 f 7 f B
f 3 f 7 f 5 f 9
f 1 f 3 f 1 f 7
f 1 f 3 f 1 f 5
f 0 f 1 f 0 f 3
f 6 f 9 f 8 f B
f 5 f 9 f 7 f B
f 3 f 7 f 5 f 9
f 1 f 3 f 1 f 7
f 1 f 3 f 1 f 5
f 0 f 1 f 0 f 3
f 1 f F f 1 f F
RAS-22S3AV-E
0
230
300
350
410
480
500
530
OFF status of
Alarm
OFF display
50.3 < Compressor speed (rps)
f A f E
To
f 9 f E
f 7 f B
f 3 f 9
f 3 f 7 During
f 1 f 4 ECO mode
f A f B
f 9 f B When To is abnormal
f 7 f B
f 3 f 9
f 3 f 7
f 1 f 4
f 1 f F
Tab
RAS-18S3AV-E
f 8 560
f 9 640
f A 670
f B 700
f C 800
f D 800
f E 900
f F 900
– –
30
FILE NO. SVM-15009
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.
In Heating operation
< 30.5 < 55.1
To > 10°C f 6 f 8
To > 5.5°C
f 8 f A
To > -5°C
f A f B
-5°C
To f A f B
To > 10°C f 5 f 7
To > 5.5°C f 7 f 9
To > -5°C
f 9 f A
-5°C
To f 9 f A
f D f D
RAS-22S3AV-E
560
640
670
750
920
920
1000
1000
55.1 <
f 9
f C
f D
f D
f 9
f B
f B
f B
f D