'22 • PAC-SM-412
-
28
-
Unit: rps
Fan speed
1st speed 2nd speed 3rd speed 4th speed 5th speed 6th speed 7th speed 8th speed
FDC
125
VNP-W
Cooling
–
–
0-21
21-32
32-44
44-49
49-70
70-
Heating
–
–
0-21
21-30
30-48
48-60
60-67
67-
(d) Outdoor fan control at low outdoor air temperature
(i) Cooling
1) Operating conditions
When the outdoor air temperature (TH2) is 22ºC or lower continues for 30 seconds while the compressor
speed is other than 0 rps
2) Detail of operation
After the outdoor fan operates at A speed for 60 seconds; the corresponding outdoor heat exchanger tempera
-
ture shall implement the following controls.
a)
Outdoor heat exchanger temperature
=
<
21ºC
After the outdoor fan speed drops (down) to 1 speed for 60 seconds; if the outdoor heat exchanger tempera
-
ture is lower than 21ºC, gradually reduce the outdoor fan speed by 1 speed.
(Lower limit ; TH2 > 19ºC : 15th speed, 0ºC
=
<
TH2 =
< 19ºC : 10th speed, TH2 < 0ºC : 9th speed)
b) 21ºC < Outdoor heat exchanger temperature
=
<
38ºC
After the outdoor fan speed maintains for 20 seconds; if the outdoor heat exchanger temperature is 21ºC-
38ºC, maintain outdoor fan speed again.
c) Outdoor heat exchanger tempeature > 38ºC
After the outdoor fan speed rises (up) to 1 speed for 60 seconds; if the outdoor heat exchanger temperature is
higher than 38ºC, gradually increase outdoor fan speed by 1 speed. (Upper limit 15th speed)
3) Reset conditions
When either of the following conditions is satisfied
a) The outdoor air temperature (TH2) is 25ºC or higher and fan speed is 15th speed or more.
b) The compressor speed is 0 rps.
4) Outdoor fan speed and fan motor speed
Unit: min
-1
Fan speed
9th speed 10th speed
11th speed 12th speed 13th speed 14th speed 15th speed
FDC125VNP-W
150
200
225
250
300
390
550
(ii) Heating
1) Operating condition
When the outdoor air temperature (TH2) is 4ºC or lower continues for 30 seconds while the compressor
speed is other than 0 rps
2) Detail of operation
The outdoor fan is stepped up by 2 speed step at each 20 seconds. (Upper limit 8th speed)
3) Reset conditions
When either of the following conditions is satisfied
a) The outdoor air temperature (TH2) is 6ºC or higher.
b) The compressor speed is 0 rps.
(e) Outdoor fan control at overload
(i) Cooling
1) Operating condition
When the outdoor air temperature (TH2) is 39ºC or higher continues for 30 seconds while the compressor command
speed is other than 0 rps
2) Detail of operation
The outdoor fan is stepped up by 3 speed. (Upper limit 7th speed)
3) Reset conditions
When either of the following conditions is satisfied
a) The outdoor air temperature (TH2) is 38ºC or lower.
b) The compressor speed is 0 rps.
15˚C < Outdoor air temperature
10˚C < Outdoor air temperature
<=
15˚C
Outdoor air temperature <=
10˚C
15th speed
Outdoor fan
12th speed
10th speed
●
Value of A
(c) Relationship between compressor speed and outdoor fan speed.
Outdoor fan speed is controlled according to the operation mode (Heating/cooling) and the compressor speed.
