Toshiba RAS-B05BKVG-E, Service Manual

Page: 38 / 126

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)
~ 31.7
Compressor speed (rps)
To > 1 0 °C
To
To < 1 0 °C
To < 5°C
To
< − 3 °C
When To is abnormal
Hz< 16.8 16.8 ≤ Hz ≤ 48.6 48. 6<Hz~ MAX
f 7 f 8 f 9
f 9 f B f E
f E f E f E
f E f E f E
f F f F f F
In Heating operation
32.4
≤
Hz
RAS-
B
16BKVG-E
Hz<13.8 13.8
≤
Hz<32.4 30.6
≤
Hz
MIN MAX MIN MAX MIN MAX
f6 fB f8 fE fA fE
f5 fA f7 fE f9 fE
f3 f7 f5 f9 f7 fB
To f2 f5 f4 f7 f6 f9
f1 f3 f3 f5 f4 f7
f1 f2 f2 f4 f3 f5
When To is abnormal OFF fB OFF fE f1 fE
To
≥
5.5 °C
To
≥
0 °C
To<0 °C
Compressor speed (rps)
In cooling operation
To
≥
38 °C
To
≥
28 °C
To
≥
15 °C
Model
Hz<13.8
RAS-
B
05,07BKVG-E
RAS-
B
10,13BKVG-E
13.8
≤
Hz<30.6
Tap
RAS-
B
05BKVG-E RAS-
B
07BKVG-E RAS-
B
10BKVG-E RAS-
B
13BKVG-E RAS-
B
16BKVG-E
f0 0 0000
f1 300 300 300 300 200
f2 370 370 370 370 300
f3 390 390 390 390 300
f4 460 460 460 460 360
f5 500 500 500 500 440
f6 520 520 520 520 500
f7 620 620 620 620 550
f8 720 720 720 720 600
f9 750 750 750 750 650
fA 780 780 780 780 700
fB 780 780 780 780 700
fC 880 880 880 880 800
fD 880 880 880 880 850
fE 880 880 900 950 900
fF 880 880 900 950 950
RPM
0 0 0
FILE NO. SVM-18006
- 38 -