Toshiba RAS-25PAVPG-ND, Service Manual

Page: 31 / 128

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.
Tap
RAS- 25PAVPG -ND
RAS-35 PAVPG-ND
Tap
RAS-25 PAVPG-ND
RAS-35 PAVPG-ND
W0 0 0 W9 600 700
W1 600 600
WA 600 700
W2
600 600
WB 600 700
W3 600 600
WC
600
700
W4 600 600
WD 600 700
W5
600 600
WE 700 700
W6 600 600
WF
850
850
W7 600 600
W8 600 650
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)
In Cooling operation In Heating operation
MIN MAX MIN MAX MIN MAX
To≥10°C W7 W8 W9 To ≥ 38°C W6 WB W8 WE WA WE
To ≥ 5°C W9 WB WE
To ≥ 29°C W5 WA W7 WE W9 WE
To ≥ -3°C
WE WE WE
To ≥ 15°C W3 W7 W5 W9 W7 WB
To ≥ -10°C WE WE WE To ≥ 5°C W2 W5 W4 W7 W6 W9
To < -10°C
WE WE WE
To ≥ 0°C W1 W3 W3 W5 W4 W7
When To is abnormal WE WE WE 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
To
Outdoor fan speed (rpm)
RAS-25PAVPG-ND
RAS-35PAVPG-ND
Fan operation
Hz < 16.8 16.8 < Hz < 37.2 37.2 < Hz
Hz < 13.2 13.2 < Hz < 27.0 27.0 < Hz
RAS-25PAVPG-ND
RAS-35PAVPG-ND
Fan operation MIN MAX MIN MAX MIN MAX
Hz < 21.0 21.0 < Hz < 42.0 42.0 < Hz
Hz < 19.2 19.2 < Hz < 36.6 36.6 < Hz
Comp. Hz
Comp. Hz
FILE NO. SVM-17050
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