Compressor Control - Fujitsu ASU 9RLF1 Service Instruction

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.
(Table 10 : Compressor Operation Frequency Range)
AOU9RLFW1
AOU12RLFW1
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)
Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
(Frequency)
AOU9RLFW1
AOU12RLFW1
(Time)
AOU9RLFW1
AOU12RLFW1
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table 11.
(Table 11 : Limitation of Compressor Frequency)
[ Cooling/ Dry ]
AOU9RLFW1
AOU12RLFW1
[ Heating ]
AOU9RLFW1
AOU12RLFW1
Cooling
Min Max
22rps 79rps
18rps 96rps
Time Time
Frequency Frequency
70rps 82rps
56rps 74rps
Time Time
80sec 140sec
80sec 140sec
50°F(10°C) 57.2°F(14°C)
Under Over Under
34rps 28rps
39rps 27rps
26.6°F(- 3°C) 44.6°F(7°C)
Under Over Under
42rps 39rps
36rps 27rps
Heating
Min Max
22rps 99rps
18rps 130rps
Time Time
Frequency Frequency
92rps 96rps
87rps 97rps
Time Time
200sec 380sec
200sec 380sec
104°F(40°C)
Over Under Over
22rps 30rps
30rps
18rps
57.2°F(14°C)
Over Under Over
28rps 23rps
27rps 18rps
01-08
Dry
Min Max
28rps 37rps
25rps 33rps
Time Time
Frequency Frequency
96rps
108rps
Time Time
440sec
440sec
104°F(40°C)
Under Over
30rps
30rps
96rps
119rps
440sec
500sec