Outdoor Fan Motor Control - Toshiba Carrier RAS-12EKCV-UL Service Manual

Item
3. Outdoor fan The speed of the outdoor unit motor is controlled according
motor control
to speed of compressor motor (rps) and outdoor
temperature (To).
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 ≥ 100°F (38°C)
To ≥ 82°F (28°C)
To ≥ 59°F (15°C)
To
To ≥ 42°F (5.5°C)
To ≥ 32°F (0°C)
To < 32°F (0°C)
To ≥ 100°F (38°C)
During
ECO mode To ≥ 100°F (38°C)
When To is abnormal
Tap
RAS-09EACV-UL RAS-12EACV-UL
f 0 0
f 1 200
f 2 300
f 3 370
f 4 440
f 5 440
f 6 500
f 7 550
f 8 600
Operation flow and applicable data, etc.
YES
fan motor continues.
NO
YES
Air conditioner
NO
~ 13.8 ~ 31.7
MIN MAX MIN MAX MIN MAX
f 2 f 3 f C f D
f 2 f 3 f A f C
f 2 f 3 f 7 f A
f 1 f 3 f 2 f 5
f 1 f 1 f 1 f 2
f 0 f 0 f 0 f 1
f 2 f 3 f B f C
f 2 f 3 f 2 f 3
f D f F f D f F
Outdoor fan speed (rpm)
Tap
0 f 9
f A
200
f B
300
f C
370
f D
440
f E
440
f F
500
550
600
OFF status of
Alarm
OFF display
32.3 ~ MAX
f E f F
f D f F
f 9 f C
f 4 f 7
f 2 f 4
f 1 f 2
f C f D
f B f C
f D
f F
RAS-09EACV-UL RAS-12EACV-UL
600
600
650
700
700
700
700
– 31 –
FILE NO. SVM-13071
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.
650
700
700
800
800
900
900