Outdoor Fan Motor Control - Toshiba RAS-18PKVSG-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 OFF.
(by strong wind)
Fan motor ON
3) Fan lock
4) Motor operates as shown in the table below.
RAS-18PAVSG-E
Model
RAS-22PAVSG-E
RAS-24PAVSG-E
To≥38 °C
To≥28 °C
To≥15 °C
To To≥5.5 °C
To≥0 °C
To<0 °C
When To is abnormal
Outdoor fan speed (rpm)
Tap
RAS-18PKVSG-E RAS-22PKVSG-E
f1 200
f2 300
f3 300
f4 360
f5 440
f6 500
f7 550
f8 600
Operation flow and applicable data, etc.
Fan motor OFF continues
YES
(Use wind for heat
NO
YES
Air conditioner
NO
In cooling operation
Compressor speed (rps)
Hz<13.8
Hz<13.8
MIN MAX
f6 fB
f5 fA
f3 f7
f2 f5
f1 f3
f1 f2
OFF fB
RPM
RAS-24PKVSG-E
200 250
300 300
300 350
360 450
440 500
500 560
550 600
600 650
exchanging)
Alarm
OFF display
13.8≤Hz<30.6 30.6≤Hz
13.8≤Hz<32.4 32.4≤Hz
MIN MAX MIN
f8 fE fA
f7 fE f9
f5 f9 f7
f4 f7 f6
f3 f5 f4
f2 f4 f3
OFF fE f1
Tap
RAS-18PKVSG-E
f9 650
fA 700
fB 700
fC 750
fD 800
fE 900
fF 900
- 37 -
FILE NO. SVM-17001
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.
MAX
fE
fE
fB
f9
f7
f5
fE
RPM
RAS-22PKVSG-E RAS-24PKVSG-E
650 700
700 700
750 700
800 750
850 750
950 900
950 900