Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 126

(4) Outdoor fan control
(a) Outdoor fan tap and fan motor speed
Model
FDC71 Cooling/Dehumidifying
FDC100 Cooling/Dehumidifying
FDC125, 140 Cooling/Dehumidifying
(b) Fan tap control during cooling/defumidifying operation
Fan taps are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note (1) It is detected by Tho-R1 or R2, whichever the higher.
zone
zone Tap 5(6)
zone Tap 5(6)
zone Tap 4
zone Tap 3
Note (1) Value in ( ) are for the model FDC71.
zone
zone
15 18
Outdoor air temperature (˚C)
(c) Fan tap control during heating operation
Fan taps are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note (1) It is detected by Tho-R1 or R2, whichever the lower.
zone
zone Tap 3
zone Tap 3
zone Tap 4
Note (1) Value in ( ) is for the model FDC71.
zone
zone
3 9
Outdoor air temperature (˚C)
(d) Outdoor fan control at cooling low outdoor air
(i) When all the following conditions are established after the start of compressor, the following control is implemented.
If the outdoor air temperature (Tho-A) is in the zone
from the start of outdoor fan and the outdoor fan is at the tap 1 speed, the outdoor fan speed is controlled according to
the outdoor heat exchanger temperature (Tho-R1, R2).
Note (1) It is detected with Tho-R1 or R2, whichever the higher.
zone
5
Outdoor air temperature (˚C)
Mode
speed
①
200
Heating 200
speed
①
200
Heating 200
speed
①
200
Heating 200
zone zone
Tap 5(6) Tap 5(6)
Tap 5(6) Tap 4(6)
Tap 4 Tap 3
Tap 3 Tap 2
zone
zone
46 48
30 37
zone zone
Tap 3 Tap 4
Tap 4(5) Tap 5
Tap 5 Tap 6
zone
12 15
zone
Outdoor fan speed
-10min
10
-
Fan motor tap
speed speed
② ③
400 600
400 600
speed speed
② ③
370 560
370 560
speed speed
② ③
370 560
370 560
• Silent mode only
zone zone
Tap 4 zone Tap 5
Tap 3 zone Tap 5
Tap 2 zone Tap 4
Tap 1 zone Tap 3
zone
zone
20 30
Outdoor heat exchanger temperature (˚C)
• Silent mode only
zone
zone Tap 3 Tap 3
zone Tap 3 Tap 3
zone Tap 4 Tap 5
zone
zone
1 3
zone
-2 0
Outdoor heat exchanger temperature (˚C)
in the cooling/dehumidifying mode, it has elapsed 20 seconds
Retained
-1
20
Outdoor heat exchanger temperature (˚C)
125
-
'19 • PAC-T-327
speed speed speed
④ ⑤ ⑥
710 810 850
710 810 850
speed speed speed
④ ⑤ ⑥
640 745 870
650 830 870
speed speed speed
④ ⑤ ⑥
640 745 870
650 830 870
zone zone
Tap 5 Tap 5
Tap 5 Tap 3
Tap 3 Tap 3
Tap 3 Tap 2
zone
zone
43 53
33 40
zone zone
Tap 3
Tap 5
Tap 6
Outdoor fan speed
+10min
-1
30
Unit: min -1
speed
⑦
950
950
speed
⑦
910
910
speed
⑦
910
910
zone
Tap 4
Tap 3
Tap 2
Tap 1