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

Item
The blowing air volume at the outdoor unit side is controlled.
3. Outdoor fan
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
≥
To 28
≥
To 15
To
≥
To 5
≥
To 0.5
≥
To 0.5
≥
To 38
During
≥
To 28
ECO and
≥
QUIET To 15
and
≥
To 5
comfort
≥
To 0.5
sleep
≥
To 0.5
To is abnormal
Outdoor fan speed (rpm)
Tap 18SAV-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
ir
NO
50.3 ≤
< 22.1 < 50.3
MIN MAX MIN MAX MIN MAX
f6 f9 f8 fB fA
f5 f9 f7 fB f9
f3 f7 f5 f9 f7
f1 f3 f1 f7 f3
f1 f3 f1 f5 f3
f0 f1 f0 f3 f1
f6 f9 f8 fB fA
f5 f9 f7 fB f9
f3 f7 f5 f9 f7
f1 f3 f1 f7 f3
f1 f3 f1 f5 f3
f0 f1 f0 f3 f1
f1 fF f1 fF f1
22SAV-E Tap 18SAV-E
0 f 8 560
230 f 9 640
300 f A 670
350 f B 700
410 f C 800
480 f D 800
500 f E 800
530 f F 800
OFF status of
Alarm
OFF
OFF display
Compressor speed (rps)
≥
To
fE
≥
To
To
fE
≥
To
fB
≥
To
f9
≥
To
f7
≥
To
During
f4
ECO mode ≥
To
fB
≥
To
fB
When To is abnormal
fB
f9
f7
f4
fF
22SAV-E
560
640
670
750
840
840
920
920
– 32 –
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
f6 f8
10°C
f8 fA
25°C
fA fB
5.5°C
5.5°C fA fB
f5 f7
10°C
f7 f9
5°C
5.5°C f9 fA
f9 fA
5.5°C
fD fD
55.1 ≤
f9
fC
fD
fD
f9
fB
fB
fB
fD