Carrier 42NQV050M - Outdoor fan motor control

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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)
ir
OFF
Alarm
display
MIN MAX MIN MAX MIN MAX
< 30.5 < 55.1 55.1 ≤
To≥38°C
f6 f9 f8 fB fA fE
To 10°C
f6 f8 f9
To 28°C
f5 f9 f7 fB f9 fE
To
5.5°C
f8 fA fC
To 15°C
f3 f7 f5 f9 f7 fB
To -5°C
fA fB fD
To
5.5°C
f1 f3 f1 f7 f3 f9
To < -5°C
fA fB fD
To
0°C
f1 f3 f1 f5 f3 f7
To 10°C
f5 f7 f9
To
-5°C
f0 f1 f0 f3 f1 f4
To
5.5°C
f7 f9 fB
To
38°C
f6 f9 f8 fB fA fB
To
f9 fA fB
To
28°C
f5 f9 f7 fB f9 fB
f9 fA fB
To
15°C
f3 f7 f5 f9 f7 fB
fD fD fD
To
5.5°C
f1 f3 f1 f7 f3 f9
To
0°C
f1 f3 f1 f5 f3 f7
To
-5°C
f0 f1 f0 f3 f1 f4
f1 fF f1 fF f1 fF
To
During
ECO and
QUIET
and
comfort
sleep
To is abnormal
Compressor speed (rps)
In Heating operation
To
During
ECO mode
When To is abnormal
50.3 ≤
< 50.3< 22.1
Compressor speed
(rps)
In cooling operation
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
≥
Outdoor fan speed (rpm)
Tap
0 0 f 8 560 560
230 230 f 9 640 640
300 300 f A 670 670
350 350 f B 700 750
410 410 f C 800 920
480 480 f D 800 920
500 500 f E 900 1000
530 530 f F 900 1000
f 0
f 1
f 2
f 7
f 3
f 4
f 5
f 6
Tap
Air conditioner
OFF
FILE NO. SVM-10052
-5°C
To < -5°C
38NYV050M2,
38NYV050M-A
38NYV060M2,
38NYV060M-A
38NYV050M2,
38NYV050M-A
38NYV060M2,
38NYV060M-A