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1.1.4 Operation control function by the outdoor control
(a) Cooling/dehumidifying operation
Unit: rps
Model
FDC71
Max. required
frequency
Normal mode 105
Capcity save mode 48
Min. required frequency 11
(b) Heating operation
Unit: rps
Model
FDC71
Max. required
frequency
Normal mode 120
Capcity save mode 60
Min. required frequency 12
(c) If the indoor fan speed becomes “Me” or “Lo”, Max required frequency goes down accordingly depending on indoor
unit model.
(d) Max. required frequency under high outdoor air temperature in cooling mode.
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Unit: rps
Model
FDC71
Max. required
frequency
Outdoor air temperature is
37°C or higher
80
Outdoor air temperature is
40°C or higher
63
Outdoor air temperature is
46°C or higher
50
(e) Max. required frequency under outdoor air temperature in heating mode.
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Unit: rps
Model
FDC71
Max. required
frequency
Outdoor air temperature is
18°C or higher
76
(f) Selection of max. required frequency by heat exchanger temperature.
(i) Maximum required frequency is selected according to the outdoor heat exchanger temperature (Tho-R) during
cooling/dehumidifying or according to the indoor heat exchanger temperature (Thi-R) during heating mode.
(ii) When there are 3 indoor heat exchanger temperatures (Thi-R), whichever the highest applies,
Unit: rps
Model
FDC71
Max. required
frequency
Cooling/
dehumidifying
Outdoor heat exchanger
temperature is 61°C or higher
60
Heating
Indoor heat exchanger
temperature is 47°C or higher
110
Indoor heat exchanger
temperature is 54°C or higher
100
Indoor heat exchanger
temperature is 60°C or higher
90
(g) When any of the controls from (a) to (f) above may duplicate, whichever the smallest value among duplicated controls
is taken as the maximum required frequency.
(h) During heating, it is operated with the maximum required frequency until the indoor heat exchanger temperature
becomes 40°C or higher.
Model FDC71VNX-W
(1) Determination of compressor speed (Frequency)
Required frequency
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