Outdoor Fan Motor Control - Toshiba RAS-B22PKVSG-TR 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.
Cooling Operation
Model Name
RAS‐22PAVSG‐E,‐TR Hz < 13.8
RAS‐24PAVSG‐E,‐TR Hz < 13.8
Fan Speed Ranges Min
To  38C f6
To  28C f5
To  15C 3 f
To
To  5.5C f2
To  0C 1 f
To < 0C 1 f
When To is abnormal OFF
Outdoor Fan Speeds (rpm)
Tap RAS‐22PAVSG‐E,‐TR RAS‐24PAVSG‐E,‐TR
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
Compressor Speeds (rps)
13.8  Hz < 30.6 30.6  Hz
13.8  Hz < 32.4 32.4  Hz
Max Min Max Min
fB f8 fE fA
fA 7 f fE 9 f
7 f 5 f 9 f f7
f5 f4 f7 f6
3 f 3 f 5 f 4 f
2 f 2 f 4 f 3 f
fB OFF fE f1
Tap RAS‐22PAVSG‐E,‐TR RAS‐24PAVSG‐E,‐TR
250 f9
300 fA
350 fB
450 fC
500 fD
560 fE
600 fF
650
exchanging)
Alarm
OFF display
Model Name
RAS‐22PAVSG‐E,‐TR
RAS‐24PAVSG‐E,‐TR
Max To  10C
<
fE T o 10C
To
<
fE T o 5C
< ‐
fB T o 3C
f9 When To is abnormal
f7
f5
fE
Outdoor Fan Speeds (rpm)
650 700
700 700
750 700
800 750
850 750
950 900
950 900
- 36 -
FILE NO. SVM-18033
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.
Heating Operation
Compressor Speeds (rps)
Hz < 13.8 13.8  Hz < 30.6 30.6  Hz
Hz < 13.8 13.8  Hz < 32.4 32.4  Hz
7 f 8 f
f9 fB
E f E f
E f E f
fF fF
f9
fE
fE
fE
fF