Fujitsu ASU 9RLF1

8. COMPRESSOR CONTROL
1. OPEARTION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in the Table 10.
Cooling Heating
Min Max Min Max Min Max
Dry
AOU9RLFW1
AOU12RLFW1
22rps 79rps 22rps 99rps 28rps 37rps
18rps 96rps 18rps 130rps 25rps 33rps
AOU9RLFW1
70rps 82rps 92rps 96rps
AOU12RLFW1
56rps 74rps 87rps 97rps 108rps 119rps
80sec 140sec 200sec 380sec
(Table 10 : Compressor Operation Frequency Range)
2. OPEARTION FREQUENCY CONTROL AT START UP
The compressor frequency soon after the start-up is controlled as shown in the Fig. 9.
(Fig. 9 : Compressor Control at Start-up)
Time
Time Time Time
Time
Time
(Frequency)
(Time)
Frequency
Frequency
Frequency Frequency
Frequency
Frequency
Time Time
Time Time Time Time
Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
01-08
AOU9RLFW1
80sec 140sec 200sec 380sec 440sec 500sec
AOU12RLFW1
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table 11.
Under Over Under Over Under Over
AOU9RLFW1
AOU12RLFW1
34rps 28rps 30rps
30rps
39rps 27rps
22rps
18rps
(Table 11 : Limitation of Compressor Frequency)
50°F(10°C) 57.2°F(14°C) 104°F(40°C)
Under Over Under Over Under Over Under Over
AOU9RLFW1
AOU12RLFW1
36rps 27rps
42rps 39rps
27rps 18rps
28rps
30rps
30rps23rps
26.6°F(- 3°C) 44.6°F(7°C) 57.2°F(14°C) 104°F(40°C)
[ Cooling/ Dry ]
[ Heating ]
96rps 96rps
440sec 440sec