Outdoor Fan Motor Control - Toshiba RAS-10N3AV2-A Service Manual

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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 OFF.
(by strong wind)
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
To < 0°C
To > 38°C
During
ECO mode
To < 38°C
When To is abnormal
Outdoor fan speed (rpm)
Ta
p
10N3AV2-A
f 0
0
f 1
200
f 2
300
f 3
370
f 4
440
f 5
440
f 6
500
f 7
550
f 8
600
Operation flow and applicable data, etc.
Fan motor OFF continues
YES
NO
YES
Air conditioner
NO
~ 13.8
~ 31.7
MIN MAX MIN MAX MIN MAX
f 2
f 3
f C
f D
f 2
f 3
f A
f C
f 2
f 3
f 7
f A
f 1
f 3
f 2
f 5
f 1
f 1
f 1
f 2
f 0
f 0
f 0
f 1
f 2
f 3
f B
f C
f 2
f 3
f 2
f 3
f D
f F
f D
f F
16N3AV2-A
13N3AV2-A
0
0
200
200
300
300
370
370
440
440
440
440
500
500
550
550
600
600
(Use wind for heat
exchanging)
Alarm
OFF
display
32.3 ~ MAX
Compressor speed (rps)
f E
f F
To
f D
f F
f 9
f C
f 4
f 7
f 2
f 4
During
ECO mode
f 1
f 2
f C
f D
f B
f C
When To is abnormal
f D
f F
Tap
10N3AV2-A
f 9
f A
f B
f C
f D
f E
f F
– 34 –
FILE NO. SVM-13001
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
~16.8 ~47.9 48.5 ~ MAX
To > 15°C
f 3
f 8
To < 15°C
f 3
f 9
To < 5.5°C
f 8
f A
To < − 5.0°C
f B
f C
To > 15°C
f 3
f 3
To < 15°C
f 3
f 3
To < 5.5°C
f 5
f 9
To < − 5.5°C
f 7
f A
f A
f B
13N3AV2-A
600
650
600
700
650
700
700
800
700
850
700
850
700
850
f 9
f A
f D
f D
f 6
f 8
f 9
f B
f D
16N3AV2-A
650
700
700
800
850
850
850

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