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144
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Service
'13 • HM-T-193
Operation control function by the outdoor unit control
Determination of compressor speed (frequency)
1) Maximum and minimum frequency under normal operating conditions
Model FDCW71VNX FDCW100VNX FDCW140VNX
Operation mode Cooling Heating Cooling Heating Cooling Heating
Maximum frequency 86 118 80 85 77 120
Mimimum frequency 20 20 20 25 20 20
2)
Maximum required frequency under high outdoor air temperature condition
Maximum required frequency is limited according to the outdoor air temperature (Tho-A)
Model FDCW71VNX FDCW100VNX FDCW140VNX
Cooling mode
40
＜
Tho-A
≦
46°C 67 75 75
46°C
＜
Tho-A 60 75 70
Heating mode
-2
＜
Tho-A
≦
18°C 81 85 85
18°C
＜
Tho-A 74 60 85
3)
Maximum frequency under high condensing saturated temperature (CST) in heating mode.
Maximum frequency is limited according to the condensing saturated temperature.
Model FDCW71VNX FDCW100VNX FDCW140VNX
Heating mode
A rps 100 − 100
B rps − − 95
4)
Minimum required frequency under high condensing saturated temperature condition.
According to
the outdoor heat exchanger temperature (Tho-R) , minimum required frequency in cooling mode is changed
as per A or B in below table.
And according to the condensing saturated temperature (CST) detected by indoor unit pressure sensor (BP4) or liquid pipe
temperature (Thi-L) detected by indoor unit temperature sensor (BT15), whichever is higher, minimum required frequency
in heating mode is changed as per C or D in below table.
Model FDCW71VNX FDCW100VNX FDCW140VNX
Cooling mode
A rps 30 − 30
B rps 40 − 40
Heating mode
C rps 30 25 30
D rps 40 35 40
Operation control function by the outdoor unit control
(rps)
(rps)
(rps)
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